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Professor SDA Sandanayaka

Chair Professor

Applied Sciences

Email : sandanay@appsc.sab.ac.lk

Mobile :0719727777

    Qualifications

  • B. Sc. (Special) Degree in Chemistry, University of Sri Jayawardenapura, Sri Lanka, 1996

    Master of Philosophy (M. Phil.) Degree in Chemistry, IMRAM Tohoku University, Japan, 2004

    Doctor of Philosophy (Ph. D.) Degree in Chemistry, IMRAM Tohoku University, Japan, 2007

    Profile

  • S.D. Atula SANDANAYAKA, (B.Sc., M.Sc., Ph.D.)

    • Professor, (Chair)

    Department of Physical Sciences and Technology,

    Faculty of Applied Sciences,

    Sabaragamuwa University of Sri Lanka, Belihuloya,

    Sri Lanka

    Phone: +94-71-972-7777; Fax: +94-453454427

    E-mail:sandanay@appsc.sab.ac.lk

     

    • Adjunct Professor

    National Institute of Fundamental Studies (NIFS),

    Hantana Road, Kandy, Sri Lanka.

     

    • Visiting Professor

    Center for Organic Photonics and Electronics Research (OPERA),

    Kyushu University, 744 Motooka,

    Nishi, Fukuoka 819–0395 Japan.

     

    • Scientific Advisor

    KOALA Tech Inc.

    4-1 Kyudai-shinmachi, Nishi-ku, Fukuoka, Japan

     

    • Address

    “Saman”, Wewita,

    Bandaragama,

    BD12530

    Sri Lanka.

    • Tel : +94-71-9727777 (Sri Lanka)
    • e-mail: sanda300@gmail.com,

    sandanay@appsc.sab.ac.lk

    • Date of Birth : June 11, 1969
    • Languages : Sinhala-native, English, Japanese
    • Nationality : Sri Lankan
    • Sex : Male
    • Civil Status : Married

    Membership of Professional Bodies/Associations

    1. Member of American Chemical Society (ACS), 2002- Present.
    2. Member of Electrochemical Society (ECS), 2002- Present.
    3. Member of Royal Society of Chemistry (RSC), 2003- Present.
    4. Member of The Chemical Society of Japan (CSJ), 2001-Present.
    5. The Japan Society of Applied Physics (JSAP), 2014-Present.

    Research Interests

    1. Organic Laser
    2. Organic Light-Emitting Device
    3. Organic semiconductor, Supramolecular Architecture for Light Energy Conversion
    4. Organic Photovoltaics
    5. Ultrafast Spectroscopy and Computational Simulation
    6. Nanoscience and Technology.

    Completed Research Projects

  • LIST OF MAJOR RESEARCH ACHIEVEMENTS

    2019

    1. T. Matsushima; Matthew R. Leyden; Takashi Fujihara; Chuanjiang Qin; Atula S. D. Sandanayaka; C. Adachi Large metal halide perovskite crystals for field-effect transistor applications Applied Physics Letters, 2019, (in press).
    2. T. Matsushima; F. Bencheikh; T. Komino; M. R. Leyden; Atula S. D. Sandanayaka; C. Qin; C. Adachi High performance from extraordinarily thick organic light-emitting diodes Nature, 2019, DOI: https;//doi.org/10.1038/s41586-019-1435-5. (in press)
    3. Atula S. D. Sandanayaka; T. Matsushima ; F. Bencheikh; S. Terakawa; W. J. Potscavage Jr.; C. Qin; T. Fujihara; K. Goushi; J-C Ribierre; C. Adachi Indication of current-injection lasing from an organic semiconductor Applied Physics Express, 12, 6, 2019.
    4. T. Matsushima; S. Yoshida; K. Inada; Y. Esaki; T. Fukunaga; H. Mieno; N. Nakamura; F. Bencheikh; M. R. Leyden; R. Komatsu; C. Qin; Atula S. D. Sandanayaka; C. Adachi Degradation Mechanism and Stability Improvement Strategy for an Organic Laser Gain Material 4,4′-Bis[(N-carbazole)styryl]biphenyl (BSBCz) Adv. Funct. Mater., 29, 10, 1807148, 2019.
    5. M. R. Leyden; S. Terakawa; T. Matsushima; S. Ruan; K. Goushi; M. Auffray; Atula S. D. Sandanayaka; C. Qin; F. Bencheikh; C. Adachi Distributed Feedback Lasers and Light-Emitting Diodes Using 1-Naphthylmethylamnonium Low-Dimensional Perovskite ACS Photonics, 6, 2, 460 - 466, 2019.

    2018

    1. T. Matsushima; C. Qin; K. Goushi; F. Bencheikh; T. Komino; M. Leyden; Atula S. D. Sandanayaka; Chihaya Adachi Enhanced Electroluminescence from Organic Light-Emitting Diodes with an Organic-Inorganic Perovskite Host Layer Adv. Mater., 30, 38, 1802662, 2018.
    2.  Y. Hao, D. H. Kim, X-K. Chen, Atula S. D. Sandanayaka, J. U. Kim, E. Zaborova, G. Canard, Y. Tsuchiya, E. Y. Choi, J. W. Wu, F. Fages, J. L. Bredas, A. D’Aleo, J. C. Ribierre,* C. Adachi, « Near infrared electroluminescence and low threshold amplified spontaneous emission above 800 nm from a thermally-activated delayed fluorescent emitter», Chem. Mater. 30, 6702-6710 (2018).
    3. Masashi Mamada; Toshiya Fukunaga; Fatima Bencheikh; Atula S. D. Sandanayaka; Chihaya Adachi Low Amplified Spontaneous Emission Threshold from Organic Dyes Based on Bis‐stilbene. Advanced Functional Materials, 2018 DOI:http://dx.doi.org/10.1126/sciadv.1602570.
    4. Dae-Hyeon Kim; Anthony D’Aléo; Xian-Kai Chen; Atula S. D. Sandanayaka; Dandan Yao; Li Zhao; Takeshi Komino; Elena Zaborova; Gabriel Canard; Youichi Tsuchiya; Eunyoung Choi; Jeong Weon Wu; Frédéric Fages; Jean-Luc Brédas; Jean-Charles Ribierre; Chihaya Adachi High-efficiency electroluminescence and amplified spontaneous emission from a thermally activated delayed fluorescent near-infrared emitter. Nature Photonics, 12, 98 - 104, 2018 DOI: http://dx.doi.org/10.1038/s41566-017-0087-y.

    2017

    1. Atula S. D. Sandanayaka, Kou Yoshida, Takashi Fujihara, Kenichi Goushi, Jean-Charles Ribierre, Toshinori Matsushima, and Chihaya Adachi Continuous-wave operation of organic thin-film distributed feedback semiconductor Laser. Science Advances, 3, 4, e1602570, 2017 DOI:http://dx.doi.org/10.1126/sciadv.1602570.
    2. Chuanjiang Qin; Toshinori Matsushima; Atula S. D. Sandanayaka; Youichi Tsuchiya; Chihaya Adachi Centrifugal-Coated Quasi-Two-Dimensional Perovskite CsPb2Br5 Films for Efficient and Stable Light-Emitting Diodes The Journal of Physical Chemistry Letters, 8, 21, 5415 - 5421, 2017 DOI: http://dx.doi.org/10.1021/acs.jpclett.7b02371.
    3. F. Bencheikh; Atula. S. D. Sandanayaka; T. Matsushima; J. C. Ribierre; C. Adachi Influence of the organic film thickness on the second order distributed feedback resonator properties of an organic semiconductor laser J. Appl. Phys.,121, 23, 233107, 2017 DOI: http://dx.doi.org/10.1063/1.4986504.
    4. Toshinori Matsushima; Sunbin Hwang; Shinobu Terakawa; Takashi Fujihara; Atula S. D. Sandanayaka; Chuanjiang Qin; Chihaya Adachi Intrinsic carrier transport properties of solution-processed organic-inorganic perovskite films Appl. Phys. Ex.,10, 2, 024103, 2017 DOI: http://dx.doi.org/10.7567/APEX.10.024103.
    5. D.-H. Kim; Atula. S. D. Sandanayaka; L. Zhao; D. Pitrat; J. C. Mulatier; T. Matsushima; C. Andraud; J. C. Ribierre; C. Adachi Extremely low amplified spontaneous emission threshold and blue electroluminescence from a spin-coated octafluorene neat film Appl. Phys. Lett., 110, 023303, 2017 DOI: http://dx.doi.org/10.1063/1.4974045.

    2016

    1. Toshinori Matsushima; Fabrice Mathevet; Benoît Heinrich; Shinobu Terakawa; Takashi Fujihara; Chuanjiang Qin; Atula S. D. Sandanayaka; Jean-Charles Ribierre; Chihaya N-channel field-effect transistors with an organic-inorganic layered perovskite semiconductor Adachi Appl. Phys. Lett., 109, 253301, 2016
    2. Toshinori Matsushima, Munetomo Inoue, Takashi Fujihara, Shinobu Terakawa, Chuanjiang Qin, Atula S. D. Sandanayaka, and Chihaya Adachi High-coverage organic-inorganic perovskite film fabricated by double spin coating for improved solar power conversion and amplified spontaneous emission. Chemical Physics Letters, 2016 661, 131 - 135,.
    3. Toshinori Matsushima, Sunbin Hwang, Atula S. D. Sandanayaka, Chuanjiang Qin, Takashi Fujihara, Masayuki Yahiro, and Chihaya Adachi Solution-processed Organic-inorganic Perovskite Field-effect Transistors with High Hole Mobilities Adv. Mater., 2016, 28, 10275 - 10281.
    4. Atula S.D. Sandanayaka, Li Zhao, Delphine Pitrat, Jean-Christophe Mulatier, Toshinori Matsushima, Chantal Andraud, Ju-Hyung Kim, Jean-Charles Ribierre, and Chihaya Adachi Improvement of the quasi-continuous-wave lasing properties in organic semiconductor lasers using oxygen as triplet quencher. Appl. Phys. Lett., 2016 108, 22, 223301.
    5. Atula S. D. Sandanayaka, Kou Yoshida, Munetomo Inoue, Kenichi Goushi, Jean-Charles Ribierre, Toshinori Matsushima, and Chihaya Adachi Quasi Continuous-Wave Lasing in Organic Thin-film Distributed Feedback Semiconductor Laser. Adv. Opt. Mater., 2016. 4, 6, 834 - 839 DOI:10.1002/adom.201600006 (Cover page).
    6. Jean-Charles Ribierre, Li Zhao, Munetomo Inoue, Pierre-Olivier Schwartz, Ju-Hyung Kim, Kou Yoshida, Atula S. D. Sandanayaka, Hajime Nakanotani, Loic Mager, Stephane Mery, and Chihaya Adachi Solvent-free liquid fluorene derivatives for organic semiconductor laser and optoelectronic applications. Chem. Commun. 2016, 52, 3103–3106.

    2015

    1. Toshinori Matsushima; Atula S. D. Sandanayaka; Yu Esaki; Chihaya Adachi Vacuum-free and solvent-free fabrication of organic field-effect transistors. SPIE, 2015, 10.1117/2.1201512.006247.
    2. Li Zhao; Munetomo Inoue; Kou Yoshida; Atula S. D. Sandanayaka; Ju-Hyung Kim; Jean-Charles Ribierre; Chihaya Adachi Singlet-triplet exciton annihilation nearly suppressed in organic semiconductor laser materials using oxygen as triplet quencher. IEEE Journal of Selected Topics in Quantum Electronics, 2015 22, 1, 1–9.
    3. Atula S. D. Sandanayaka, Yoshida, K., Matsushima, T.; Adachi, C. Degradation Mechanisms of Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence Molecules. J. Phys. Chem. C 2015, 119, 42, 23845–23851.
    4. Toshinori Matsushima; Atula S. D. Sandanayaka; Yu Esaki; Chihaya Adachi Vacuum-and-solvent-free fabrication of organic semiconductor layers for field-effect transistors. Scientific Reports, 2015 5, 14547–9.
    5. Prashanth K. Poddutoori, Gary N. Lim, Atula S. D. Sandanayaka, Paul A. Karr, Osamu Ito, Francis D Souza, Melanie Pilkington and Art van der Est Axially assembled photosynthetic reaction center mimics composed of tetrathiafulvalene, aluminum(III) porphyrin and fullerene entities Nanoscale 2015 7, 12151-12165.
    6. Toshinori Matsushima; Takashi Fujihara; Chuanjiang Qin; Shinobu Terakawa; Yu Esaki; Sunbin Hwang; Atula S. D. Sandanayaka; William J. Potscavage, Jr.; Chihaya Adachi Morphological control of organic–inorganic perovskite layers by hot isostatic pressing for efficient planar solar cells. J. Mater. Chem. A, 2015 3, 17780–17787.
    7. Atula S. D. Sandanayaka, Yoshida, K., Matsushima, T.; Adachi, C. Exciton quenching behavior of thermally activated delayed fluorescence molecules by charge carriers. J. Phys. Chem. C 2015, 119, 42, 23845–23851.

    2014

    1. Hideyuki and Murata Atula S. D. Sandanayaka “Degradation Analysis of Light Emitting Diodes by Time Resolved Photoluminescence Measurements“ SID Digest, 2014 45, 1, 32–35.

    2013

    1. D'Souza, Francis, Atula S. D. Sandanayaka, and Ito, Osamu “Photoinduced Electron Transfer Of Supramolecular Carbon Nanotube Materials Decorated With Photoactive Sensitizers” Organic Nanomaterials: Synthesis, Characterization, and Device Applications, First Edition. Edited by Tom´as Torres and Giovanni Bottari. C@2013 John Wiley & Sons, Inc. Published 2013 by John Wiley & Sons, Inc. 2013, 187–204.

    2012

    1. Das, Sushanta K., Atula S. D. Sandanayaka, Navaneetha K. Subbaiyan, Zandler, Melvin E., Ito, Osamu and D'Souza, Francis “Functionalization of Diameter Sorted Semi-conductive SWCNTs with Photosensitizing Porphyrins: Syntheses and Photoinduced Electron Transfer” Chem. Eur. J., 2012, 18, 11388–11398.
    2. Francis D’Souza, Sushanta K. Das, Atula S. D. Sandanayaka, Navaneetha K. Subbaiyan, Deviprasad R. Gollapalli, Melvin E. Zandler,Takatsugu Wakaharad and Osamu Ito “Photoinduced charge separation in three-layer supramolecular nanohybrids: fullerene-porphyrin-SWCNT” Phys. Chem. Chem. Phys., 2012, 14, 2940–2950.
    3. Georgia Pagona, Galateia E. Zervaki, Atula S. D. Sandanayaka, Osamu Ito, Georgios Charalambidis, Taku Hasobe, Athanassios G. Coutsolelos, and Nikos Tagmatarchis “Carbon Nanohorn−Porphyrin Dimer Hybrid Material for Enhancing Light-Energy Conversion” J. Phys. Chem. A 2012, 116 (5) 9439-9449.

    2011

    1. Francis D’Souza, Sushanta K. Das, Melvin E. Zandler, Atula S. D. Sandanayaka, and Osamu Ito “Bionano Donor-Acceptor Hybrids of Porphyrin, ssDNA, and Semiconductive Single-Wall Carbon Nanotubes for Electron Transfer via Porphyrin Excitation” J. Am. Chem. Soc. 2011, (49) 133, 19922-19930.
    2. Osamu Ito, Atula S. D. Sandanayaka, and Francis D’Souza “Photoinduced Electron Transfer of SWCNT-Based Supramolecular Nanoarchitectures with Photosensitizing Molecules” Transactions of the Materials Research Society of Japan, 2011, 36 (3). 341-544.
    3. Yusuke Kuramochi, Akiharu Satake, Atula S. D. Sandanayaka, Yasuyuki Araki, Osamu Ito, and Yoshiaki Kobuke “Fullerene- and Pyromellitdiimide-Appended Tripodal Ligands Embedded in Light-Harvesting Porphyrin Macrorings” Inorg. Chem. 2011, 50 (20). 10249-10258.
    4. Atula S. D. Sandanayaka, Navaneetha K. Subbaiyan, Raghu Chitta, Eranda Maligaspe,Taku Hasobe, Osamu Ito, and Francis D’Souza, “Diameter-Sorted SWCNT–Porphyrin and SWCNT–Phthalocyanine Conjugates for Light-Energy Harvesting” ChemPhysChem 2011, 12 (12). 2266-2273.
    5. Sushanta K. Das, Navaneetha K. Subbaiyan, Francis D’Souza, Atula S. D. Sandanayaka, Takatsugu Wakahara, and Osamu Ito, “Formation and photoinduced properties of zinc porphyrin-SWCNT and zinc phthalocyanine-SWCNT nanohybrids using diameter sorted nanotubes assembled via metal-ligand coordination and p-p stacking” J. Porphyrins Phthalocyanines, 2011 15 (14) 1033-1043.
    6. Sushanta K. Das, Navaneetha K. Subbaiyan, Francis D’Souza, Atula S. D. Sandanayaka, Taku Hasobe and Osamu Ito, “Photoinduced processes of the supramolecular functionalized semi-conductive SWCNTs with porphyrins via ion-pairing interactions” Energy Environ. Sci., 2011, 4, 707–716.
    7. Prashanth K. Poddutoori, Atula S. D. Sandanayaka, Niloofar Zarrabi, Taku Hasobe, Osamu Ito, Art van der Est, “Sequential Charge Separation in Two Axially Linked Phenothiazine-Aluminum(III) Porphyrin-Fullerene Triads” J. Phys. Chem. A 2011, 115 (5) 709-717.
    8. Nikolaos Karousis, Atula S. D. Sandanayaka, Taku Hasobe, Solon P. Economopoulos, Evangelia Sarantopoulou and Nikos Tagmatarchis “Graphene oxide with covalently linked porphyrin antennae: Synthesis, characterization and photophysical properties” J. Mater. Chem., 2011, 21, (1) 109–117.

    2010

    1. Atula S. D. Sandanayaka, Eranda Maligaspe, Taku Hasobe, Osamu Ito and Francis D'Souza, “Diameter dependent electron transfer in supramolecular nanohybrids of (6,5)- or (7,6)-enriched semiconducting SWCNT as donors and fullerene as acceptor” Chem. Commun., 2010,46 (46), 8749-8751.
    2. Francis D’Souza, Atula S. D. Sandanayaka, and Osamu Ito, “SWNT-Based Supramolecular Nanoarchitectures with Photosensitizing Donor and Acceptor Molecules” J. Phys. Chem. Lett. 2010, 1, (5) 2586–2593. (PERSPECTIVE, Cover page)
    3. Atula S. D. Sandanayaka, Hisahiro Sasabe, Toshikazu Takata, Osamu Ito, “Photoinduced electron transfer processes of fullerene rotaxanes containing various electron-donors” J. Porphyrins Phthalocyanines, 2010 11 (14) 58-77.
    4. Atula S. D. Sandanayaka, Y. Takaguchi, Y. Sako, M. Tamura, and O. Ito “Photoinduced Electron Transfer of Single Walled Carbon Nanotubes Surrounded by Fullerodendrimers in Aqueous Media” Adv. Sci. Lett. 2010, 3, (10) 2317-2327.
    5. H. Yamada, K. Ohkubo, D. Kuzuhara, T. Takahashi, Atula S. D. Sandanayaka, T. Okujima, K. Ohara, O. Ito, H. Uno, N. Ono, and S. Fukuzumi, “Synthesis, Crystal Structure and Photodynamics of p-Expanded Porphyrin-Fullerene Dyads Synthesized by Diels-Alder Reaction” J. Phys. Chem. B 2010, 114 (45) 14717-14728.
    6. M. Vizuete, M. J. Gómez-Escalonilla, J. L. G. Fierro, Atula S. D. Sandanayaka, T. Hasobe, M. Yudasaka, S. Iijima, O. Ito, and F. Langa “Supramolecular Assembles of Carbon Nanohorns and Porphyrin for Photoinduced Electron Transfer System” Chem. Eur. J. 2010, 16, (35) 10752-10763.
    7. F. D’Souza, E. Maligaspe, Atula S. D. Sandanayaka, N. K. Subbaiyan, P. A. Karr, T. Hasobe, and O. Ito “Photochemical Charge Separation in Supramolecular Phthalocyanine-Multifullerene Conjugates Assembled by Crown Ether-Alkyl Ammonium Cation Interactions” J. Phys. Chem. A 2010, 114 (41) 10951-10959.
    8. E. Maligaspe, Atula S. D. Sandanayaka, T. Hasobe, O. Ito, and F. D’Souza “Sensitive Efficiency of Photoinduced Electron Transfer to Band Gaps of Semi-Conductive SWNTs with Supramolecularly Attached Zinc Porphyrin bearing Pyrene Glues” J. Am. Chem. Soc. 2010, (23) 132, 8158-8164.
    9. Atula S. D. Sandanayaka, Hisahiro Sasabe, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, and Osamu Ito “Axle Length Effect on Photoinduced Electron Transfer in Triad Rotaxane with Porphyrin, [60]Fullerene and Triphenylamine” J. Phys. Chem. A 2010, 114 (16) 5242-5250. (Cover page)
    10. Prashanth K. Poddutoori, Atula S. D. Sandanayaka, Taku Hasobe, Osamu Ito, Art van der Est, “Photoinduced Charge Separation in a Ferrocene –Aluminum(III) Porphyrin – Fullerene Supramolecular Triad” J. Phys. Chem. B 2010, 114 (45) 14348-14357.
    11. Taku Hasobe, M. Gulam Rabbani, Atula S. D. Sandanayaka, Hayato Sakai and Tatsuya Murakami “Synthesis and aggregate formation of triphenylene core-centered porphyrin hexamers” Chem. Commun 2010, (46) 889–891.

    2009

    1. Osamu Ito, Atula S. D. Sandanayaka, Raghu Chitta, and Francis D’Souza “Effect of potassium ion on switching of photoinduced electron transfer in inclusion dyads formed by crown ether-porphyrins and an ammonium cation-fullerene” J. Indian. Chem. Soc., 2009 86 (1).
    2. Atula S. D. Sandanayaka, Tatsuya Murakami, and Taku Hasobe “Preparation and Photophysical and Photoelectrochemical Properties of Supramolecular Porphyrin Nanorods Structurally Controlled by Encapsulated Fullerene Derivatives J. Phys. Chem. C 2009, 113 (42) 18369-18378.
    3. Grigoris Mountrichas, Atula S. D. Sandanayaka, Solon P. Economopoulos, Stergios Pispas, Osamu Ito, Taku Hasobe and Nikos, “Photoinduced electron transfer in aqueous carbon nanotube/block copolymer/CdS hybrids: application in the construction of photoelectrochemical cells” J. Mater. Chem., 2009, 19 (47) 8990-8998.
    4. Hisahiro Sasabe, Atula S. D. Sandanayaka, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, Yasuyuki Araki and Osamu Ito, “Axle Q1 charge effects on photoinduced electron transfer processes in rotaxanes containing porphyrin and [60]fullerene” Phys. Chem. Chem. Phys. 2009, 11 (46) 10908-10915.
    5. Atula S. D. Sandanayaka, Osamu Ito, Minfang Zhang, Kumiko Ajima, Sumio Iijima, Masako Yudasaka, Tatsuya Murakami, and Kunihiro Tsuchid, “Photoinduced Electron-Transfer in Zinc Phthalocyanine Loaded on Single Walled Carbon Nanohorns in Aqueous Solution” Adv. Mater. 2009, 21, (43) 4366-4371.
    6. Atula S. D. Sandanayaka, Osamu Ito,Q2 Takatsugu Tanaka, Hiroyuki Isobe, Ei-ichi Nakamura, Masako Yudasaka and Sumio Iijima, “Photoinduced electron transfer of nanohybrids of carbon nanohorns with amino groups and tetrabenzoic acid porphyrin in aqueous media” New J. Chem., 2009, 33, (11) 2261-2266.
    7. Toru Arai, Shingo Nobukuni, Atula S. D. Sandanayaka, Osamu Ito, “Zinc Porphyrins Covalently Bound to the Side Walls of Single-Walled Carbon Nanotubes via Flexible Bonds” J. Phys. Chem. C 2009, 113, (32) 14493-14499.
    8. Atula S. D. Sandanayaka, Raghu Chitta, Navaneetha K. Subbaiyan, Lawrence D’Souza, Osamu Ito and Francis D’Souza, “Photoinduced Charge Separation in Ion-Paired Porphyrin-Single Wall Carbon Nanotube Donor-Acceptor Hybrids” J. Phys. Chem. C 2009, 113, (30) 13425-13432.
    9. Yusuke Kuramochi, Atula S. D. Sandanayaka, Akiharu Satake, Yasuyuki Araki, Kazuya Ogawa, Osamu Ito, and Yoshiaki Kobuke “Energy Transfer Followed by Electron Transfer in a Porphyrin Macrocycle and Central Acceptor Ligand: A Model for a Photosynthetic Composite of the Light-Harvesting Complex and Reaction Center” Chem. Eur. J. 2009, 15, (10) 2317-2327.

    2008

    1. Atula S. D. Sandanayaka, Yasuyuki Araki, Takehiko Wada and Taku Hasobe, “Structural and Photophysical Properties of Self-Assembled Porphyrin Nanoassemblies Organized by Ethylene Glycol Derivatives” J. Phys. Chem. C 2008, 112, (49) 19209-19216.
    2. Minfang Zhang, Tatsuya Murakami, Kumiko Ajima, Kunihiro Tsuchida, Atula S. D. Sandanayaka, Osamu Ito, Sumio Iijima, and Masako Yudasaka “Fabrication of ZnPc/protein nanohorns for double photodynamic and hyperthermic cancer phototherapy ” Proc. Natl. Acad. Sci. 2008, 105, (39) 14773-14778.
    3. Taku Hasobe, Atula S. D. Sandanayaka, Takehiko Wada and Yasuyuki Araki “Fullerene-encapsulated porphyrin hexagonal nanorods. An anisotropic donor–acceptor composite for efficient photoinduced electron transfer and light energy conversion” Chem. Commun.2008, (29) 3372–3374. (Inner Cover page)
    4. Georgia Pagona, Atula S. D. Sandanayaka, Taku Hasobe, Georgios Charalambidis, Athanassios G. Coutsolelos, Masako Yudasaka, Sumio Iijima, and Nikos Tagmatarchis “Characterization and Photoelectrochemical Properties of Nanostructured Thin Film Composed of Carbon Nanohorns Covalently Functionalized with Porphyrins” J. Phys. Chem. C 2008, 112, (40) 15735-15741.
    5. Yongshu Xie, Jonathan P. Hill, Amy Lea Schumacher, Atula S. D. Sandanayaka, Yasuyuki Araki, Paul A. Karr, Jan Labuta, Francis D’Souza, Osamu Ito, Christopher E. Anson, Annie K. Powell, and Katsuhiko Ariga “Twisted, Two-Faced Porphyrins as Hosts for Bispyridyl Fullerenes: Construction and Photophysical Properties ” J. Phys. Chem. C 2008, 112, (28) 10559-10572.
    6. Atula S.D. Sandanayaka, Navaneetha K. Subbaiyan, Raghu Chitta, Yasuyuki Araki, Osamu Ito and Francis D’Souza “Co-facial magnesium porphyrin dimer complexed with fullerene:photosynthetic reaction center model of ‘special pair’ self-assembled to electron acceptor” J. Porphyrins Phthalocyanines 2008, 12 (7), 857-865.
    7. George Rotas, Atula S. D. Sandanayaka, Nikos Tagmatarchis, Toshinari Ichihashi, Masako Yudasaka, Sumio Iijima, Osamu Ito “(Terpyridine)copper(II)-Carbon Nanohorns: Metallo-Nanocomplexes for Photoinduced Charge Separation” J. Am. Chem. Soc. 2008, (14) 130, 4725-4731.
    8. Taku Hasobe, Hideaki Oki, Atula S. D. Sandanayaka, and Hideyuki Murata, “Sonication-assisted supramolecular nanorods of meso-diaryl-substituted porphyrins” Chem. Commun.2008, (6) 724–726.
    9. Yasuyaki Araki, Raghu Chitta, Atula S. D. Sandanayaka, Kevin Langenwalter, Suresh Gadde, Melvin E. Zandler, Osamu Ito and Francis D’Souza “Self-Assembled Supramolecular Ferrocene-Fullerene Dyads and Triad: Formation and Photoinduced Electron Transfer” J. Phys. Chem. C 2008, 112, (6) 2222-2229.

    2007

    1. Francis D’Souza, Raghu Chitta, Atula S. D. Sandanayaka, Navaneetha K. Subbaiyan, Lawrence D’Souza, Yasuyuki Araki, and Osamu Ito “Supramolecular Carbon Nanotube-Fullerene Donor-Acceptor Hybrids for Photoinduced Electron Transfer” J. Am. Chem. Soc. 2007, (51) 129, 15865-15871.
    2. Qing Huang, Yoshio Bando, Atula S. D. Sandanayaka, Chengchun Tang, Jinbin Wang, Takashi Sekiguchi, Chunyi Zhi, Dmitri Golberg, Yasuyuki Araki, Osamu Ito, Fangfang Xu, and Lian Gao, “Photoinduced Charge Injection and Bandgap-Engineering of High-Specific-Surface-Area BN Nanotubes using a Zinc Phthalocyanine Monolayer” small. 2007, (8) 3, 1330–1335.
    3. Francis D’Souza, Raghu Chitta, Atula S. D. Sandanayaka, Navaneetha K. Subbaiyan, Lawrence D’Souza, Yasuyuki Araki, and Osamu Ito “Self-Assembled Single-Walled Carbon Nanotube:Zinc–Porphyrin Hybrids through Ammonium Ion–Crown Ether Interaction: Construction and Electron Transfer” Chem. Eur. J. 2007, 13, (29) 8277-8284.
    4. Francis D’Souza, Suresh Gadde, Amy L. Schumacher, Melvin E. Zandler, Atula. S. D. Sandanayaka, Yasuyuki Araki, and Osamu Ito “Supramolecular Triads of Free-Base Porphyrin, Fullerene and Ferric Porphyrins via ‘Covalent-Coordinate’ Binding Approach: Formation, Sequential Electron Transfer and Charge Stabilization” J. Phys. Chem. B 2007, 111, (29) 11123-11130.
    5. Georgia Pagona, Atula S. D. Sandanayaka, Alan Maigné, Jing Fan, George C. Papavassiliou, Ioannis D. Petsalakis, Barry R. Steele, Nikos Tagmatarchis, Masako Yudasaka, Sumio Iijima and Osamu Ito “Photoinduced Electron Transfer on Aqueous Carbon Nanohorn–Pyrene–Tetrathiafulvalene Architectures” Chem. Eur. J. 2007, 13, (27) 7600-7607.
    6. Atula S. D. Sandanayaka, Georgia Pagona, Nikos Tagmatarchis, Masako Yudasaka Sumio Iijima, Yasuyuki Araki, Osamu Ito “Photoinduced Electron-Transfer Processes of Carbon Nanohorns Covalently Linked with Pyrene Chromophores: Towards Intramolecular Charge-Separation and Electron-Migration Systems” J. Mater. Chem., 2007, 17, (23) 2540-2546.
    7. Georgia Pagona, Atula S. D. Sandanayaka, Yasuyuki Araki, Jing Fan, Athanassios G. Coutsolelos, Nikos Tagmatarchis, Masako Yudasaka, Sumio Iijima, Osamu Ito “Covalent Association of Carbon Nanohorns with Porphyrin: Nanohybrid Formation and Photo-Induced Electron Transfer and Energy Transferr” Adv. Funct. Mater. 2007,17,(10) 1705-1711. (Cover page)
    8. Raghu Chitta, Atula S. D. Sandanayaka, Amy L. Schumacher, Lawrence D’Souza, Yasuyaki Araki, Osamu Ito and Francis D’Souza “Donor-Acceptor Nanohybrids of Zinc Naphthalocyanine or Zinc Porphyrin Non-Covalently linked to Single-Wall Carbon Nanotubes for Photoinduced Electron Transfer” J. Phys. Chem. C 2007 111, (19) 6947-6955.
    9. Amy Lea Schumacher, Atula S. D. Sandanayaka, Jonathan P. Hill, Katsuhiko Ariga, Paul A. Karr, Yasuyuki Araki, Osamu Ito, and Francis D’Souza, “Supramolecular Triad and Pentad Composed of Zinc Porphyrin(s), Oxoporphyrinogen, and Fullerene(s): Design and Electron Transfer Studies” Chem. Eur. J. 2007, 13, (16) 4628-4635.
    10. F. Oswald,a S. Chopin, P. de la Cruz, J. Orduna,c J. Garín, A. S. D. Sandanayaka, Y. Araki, O. Ito, J. L. Delgado, J. Cousseau, and F. Langa “Through-space communication in a TTF-C60-TTF triad” New J. Chem., 2007, 31, (2) 230-236.
    11. Qing Huang, Atula S. D. Sandanayaka, Yoshio Bando, Chunyi Zhi, RenZhi Ma, Guozhen Shen, Dmitri Golberg, Jincai Zhao, Yasuyuki Araki, and Osamu Ito, “Donor-Acceptor Nanoensembles Based on Boron Nitride Nanotubes” Adv. Mater. 2007, (7) 19, 934–938.
    12. Atula S. D. Sandanayaka, Hironori Orikasa, Takashi Kyotani, Yasuyuki Araki, and Osamu Ito “Laser-induced electron pooling from carbon nano “test tube” dispersed in aqueous solution” carbon 2007, 45, (3) 684-687.
    13. Francis D’Souza, Raghu Chitta, Suresh Gadde, Lisa M. Rogers, Paul A Karr, Melvin E. Zandler, Atula S. D. Sandanayaka, Yasuyaki Araki, and Osamu Ito “Photosynthetic Reaction Center Mimicry of ‘Special Pair’ Dimer Linked to Electron Acceptors by Supramolecular Approach: Self-assembled Cofacial Zinc Porphyrin Dimer Complexed with Fullerene(s)” Chem. Eur. J. 2007, 13, (3) 916-922.
    14. Hisahiro Sasabe, Yoshio Furusho, Atula S. D. Sandanayaka, Yasuyuki Araki, Nobuhiro Kihara, Kazuhiko Mizuno, Akiya Ogawa, Toshikazu Takata, Osamu Ito, “Photoinduced electron transfer processes in three component rotaxanes with porphyrins, [60]fullerene and triphenylamine” J. Porphyrins Phthalocyanines 2007, 10 (12), 1346-1359.

    2006

    1. Georgia Pagona, Atula S. D. Sandanayaka, Yasuyuki Araki, Jing Fan, Nikos Tagmatarchis, Masako Yudasaka, Sumio Iijima, Osamu Ito “Electronic Interplay in Illuminated Aqueous Carbon Nanohorn-Porphyrin Ensembles” J. Phys. Chem. B 2006 110, (42) 20729-20732.
    2. Atula S. D. Sandanayaka, Yasuyaki Araki, Osamu Ito, Raghu Chitta, Suresh Gadde, and Francis D’Souza “Electron Transfer Switching in Supramolecular Porphyrin-Fullerene Conjugates Held by Alkyl Ammonium Cation-Crown Ether Binding” Chem. Commun.2006, (41) 4327–4329.
    3. Atula S. D, Sandanayaka,Yutaka Takaguchi, Tetsuya Uchida, Yuuki Sako, Yu Morimoto, Yasuyuki Araki, and Osamu Ito “Light-induced Electron Transfer on the Single Wall Carbon Nanotube Surrounded in Anthracene Dendron in Aqueous Solution” Chem.Lett. 2006, 35(10), 1188-1189.
    4. G. Abraham Rajkumar, Atula S. D. Sandanayaka, Kei-ichiro Ikeshita, Yasuyuki Araki, Yoshio Furusho, Toshikazu Takata and Osamu Ito “Prolongation of Lifetime of Charge-Separated State at Low Temperature in a Photoinduced Electron-Transfer System of [60]Fullerene and Ferrocene Moiety Tethered by Rotaxane Structures” J. Phys. Chem. B 2006, 110, (13) 6516-6525.
    5. Francis D’Souza, Raghu Chitta, Suresh Gadde, Amy L. McCarty, Paul A. Karr, Melvin E. Zandler, Atula S. D. Sandanayaka, Yasuyaki Araki, and Osamu Ito “Design, Syntheses, and Studies of Supramolecular Porphyrin-Fullerene Conjugates Using Bis 18-Crown-6 Appended Porphyrins and Pyridine or Alkyl Ammonium Functionalized Fullerenes” J. Phys. Chem. B 2006, 110, (12) 5905-5913.
    6. Francis D’Souza, Raghu Chitta, Suresh Gadde, Melvin E. Zandler, Amy L. McCarty, Atula S. D. Sandanayaka, Yasuyaki Araki, and Osamu Ito “Potassium Ion Controlled Switching of Intra- to Intermolecular Electron Transfer in Crown Ether Appended Free-Base Porphyrin-Fullerene Donor-Acceptor Systems” J. Phys. Chem. B 2006, 110, (9) 4338-4347.
    7. Atula S. D. Sandanayaka, Hisahiro Sasabe, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, and Osamu Ito “Photoinduced Electron Transfer Processes in Rotaxanes Containing [60]Fullerene and Ferrocene; Effect of Charge of Axle on Light Induced Molecular Motion” Aust. J. Chem. 2006, 59, (3) 186–192.
    8. Atula S.D. Sandanayaka, Yasuyaki Araki, Osamu Ito, Gollapalli R. Deviprasad, Phillip M. Smith, Lisa M. Rogers, Melvin E. Zandler; Francis D'Souza “Photoinduced electron transfer in fullerene triads bearing pyrene and fluorene” Chemical Physics, 2006, 325, (3) 452-460.
    9. Stéphanie Chopin, Jack Cousseau, Eric Levillain, Concepció Rovira, Jaume Veciana, Atula S. D. Sandanayaka, Yasuyuki Araki, and Osamu Ito “[60]Fullerene-Perchlorotriphenylmethyde Anion Triads. Synthesis and Study of Photoinduced Intramolecular Electron-Transfer Processes.” J. Mater. Chem., 2006, 16, (1) 112-121.
    10. Jonathan P. Hill, Atula S. D. Sandanayaka, Amy Lea McCarty, Paul A. Karr, Melvin E. Zandler, Richard Charvet, Katsuhiko Ariga, Yasuyuki Araki, Osamu Ito, and Francis D’Souza “A Novel Bis(Zinc-Porphyrin)-Oxoporphyrinogen Donor-Acceptor Triad: Synthesis, Electrochemical, Computational and Photochemical Studies” J. Org. Chem. 2006, (3) 595–603. (Cover page)

    2005

    1. Atula S. D. Sandanayaka, Yoshiki Taguri, Yasuyuki Araki, Tsutomu Ishi-I, Shuntaro Mataka, and Osamu Ito “Photoinduced Charge Separation and Charge Recombination in [60]Fullerene-Diphenylbenzothiadiazole-Triphenylamine Triad: Role of Diphenylbenzothiadiazole as Bridge” J. Phys. Chem. B 2005, 109, (47) 22502-22512.
    2. Atula S. D. Sandanayaka, Huimin Zhang, Yutaka Takaguchi, Yuuki Sako, Mitsuhiro Tamura, Yasuyuki Araki, and Osamu Ito “Photoinduced charge separation and charge recombination of fullerene bearing dendritic poly(amidoamine) with carboxylates at the terminal in aqueous media” Chem. Commun., 2005, (41) 5160–5162.
    3. Atula S. D. Sandanayaka, Kei-ichiro Ikeshita, G. Abraham Rajkumar, Yoshio Furusho, Yasuyuki Araki, Toshikazu Takata, and Osamu Ito “Photoinduced Intramolecular Electron-Transfer Processes in [60]Fullerene and N,N-Bis(biphenyl)aniline Molecular Systems in Solutions” J. Phys. Chem. A 2005, 109, (36) 8088-8095.
    4. Atula S. D. Sandanayaka, Kei-ichiro Ikeshita, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata and Osamu Ito “Photoinduced electron- and energy-transfer processes of [60]fullerene covalently bonded with one and two zinc porphyrin(s): effects of coordination of pyridine and diazabicyclooctane to Zn atom” J. Mater. Chem., 2005, (23) 15, 2276-2287.
    5. He-Ping Zeng, Tingting Wang, Atula S. D. Sandanayaka, Yasuyuki Araki, and Osamu Ito “Photoinduced Charge Separation and Charge Recombination in [60]Fullerene-Ethylcarbazole and [60]Fullerene-Triphenylamines in Polar Solvents” J. Phys. Chem. A 2005, 109, (21) 4713-4720.
    6. Atula S. D. Sandanayaka, Kei-ichiro Ikeshita, Nobuhiro Watanabe,c Yasuyuki Araki, Yoshio Furusho, Nobuhiro Kihara, Toshikazu Takata, and Osamu Ito “Syntheses of [60]fullerene and N,N-bis(4-biphenyl)aniline-tethered rotaxane: Photoinduced electron-transfer processes via singlet and triplet states of [60]fullerene” Bull. Chem. Soc. Jpn. 2005 78, (6) 1008-1017. (Selected paper)
    7. Francis D_Souza, Raghu Chitta, Suresh Gadde, Melvin E. Zandler, Amy L. McCarty, Atula S. D. Sandanayaka, Yasuyaki Araki, and Osamu Ito “Effect of Axial Ligation or p–p-Type Interactions on the Photochemical Charge Stabilization in the “Two-Point” Bound Supramolecular Porphyrin–Fullerene Conjugates” Chem. Eur. J. 2005, 11, (15) 4416-4428.
    8. Francis D’Souza, Raghu Chitta, Suresh Gadde, Melvin E. Zandler, Atula S. D. Sandanayaka,Yasuyuki Araki and Osamu Ito “Supramolecular porphyrin–fullerene via ‘two-point’ binding strategy: Axial-coordination and cation–crown ether complexation” Chem. Commun., 2005, (10) 1279–1281.
    9. Atula S. D. Sandanayaka, Nobuhiro Watanabe, Kei-Ichiro Ikeshita, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Osamu Ito, and Toshikazu Takata “Synthesis and Photoinduced Electron Transfer Processes of Rotaxanes Bearing [60]Fullerene and Zinc Porphyrin: Effects of Interlocked Structure and Length of Axle with Porphyrins” J. Phys. Chem. B 2005, 109, (7) 2516-2525.
    10. G. Abraham Rajkumar, Atula S. D. Sandanayaka, Kei-ichiro Ikeshita, Mitsunari Itou, Yasuyuki Araki, Yoshio Furusho, Nobuhiro Kihara, Osamu Ito, and Toshikazu Takata “Photoinduced Intramolecular Electron-Transfer Processes in [60]Fullerene-(Spacer)-N,N-Bis(biphenylyl)aniline Dyad in Solutions” J. Phys. Chem. A 2005, 109, (11) 2428-2435.

    2004

    1. Atula S. D. Sandanayaka, Kyohei Matsukawa, Tsutomu Ishi-i, Shuntaro Mataka, Yasuyuki Araki, and Osamu Ito “Photoinduced Charge Separation and Charge Recombination in [60]Fullerene-(Benzothiadiazole-Triphenylamine) Based Dyad in Polar Solvents” J. Phys. Chem. B 2004, 108, (52) 19995-20004.
    2. Atula S. D. Sandanayaka, Hisahiro Sasabe, Yasuyuki Araki, Yoshio Furusho, Osamu Ito, and Toshikazu Takata, “Photoinduced Electron-Transfer Processes between [C60]Fullerene and Triphenylamine Moieties Tethered by Rotaxane Structures. Through-Space Electron Transfer via Excited Triplet States of [60]Fullerene” J. Phys. Chem. A 2004, 108, (24) 5145-5155.
    3. Atula S. D. Sandanayaka, Yasuyuki Araki, Chuping Luo, Mamoru Fujitsuka, and Osamu Ito “Photoinduced Electron-Transfer Processes of Fullerene (C60) with Amine Donors: Excited Triplet Route vs Excited Singlet Route” Bull. Chem. Soc. Jpn., 2004 77, (7) 1313–1322.

    Research Grants/Research Awards

    1. 2014/May – Present      “Development of Organic Semiconductor Laser” JST ERATO Molecular Exciton Engineering Project, Prof. Adachi Laboratory.
    2. 2013/April – 2014/April      “Development of Advanced Evaluation Methods for Organic Light Emitting Materials” in “Development of Advanced Evaluation Methods for Next-generation Organic Electronics Materials”, New Energy Development Organization (NEDO), JAIST.
    3. 2011/January – 2013/March     “Development of Fabrication Process of Highly Stable Organic Light-Emitting Diodes” in “Challenges for super organic electroluminescence devices through innovation of organic semiconducting materials”, JSPS FIRST Program, JAIST.
    4. 2008/August – 2010/July     “Supramolecular Self-Assembles for Artificial Solar Energy Harvesting Systems Compose of Porphyrin Nanoarchitectures and Carbon Nanomaterials” JSPS research grant under JSPS Postdoctoral Fellowship for Foreign Researchers, Japan, Prof. Hasobe Laboratory.
    5. 2007/April – 2008/March     “Supramolecular Architecture for Light Energy Conversion, Organic Photovoltaics, Time-Resolved Spectroscopy” Grants-in-Aid for Scientific Research and special coordination funds for promoting science and technology from the Ministry of Education, Culture, Sports, Science and Technology, Japan, Prof. Hasobe Laboratory.
    6. 2006/April – 2007/March     “Photoinduced Electron Transfer Processes of Chemically Modified Carbon Nanomaterials” 21st Century COE research grant for the third year of my doctor course, Japan, Prof. Ito Laboratory.
    7. 2001/April – 2007/March     Japanese Government (MONBUKAGAKUSHO) to conduct M.Sc. and Ph.D., Prof. Ito Laboratory.

    Participation in Continuing Professional Development (CPD) Programmes/Extension Courses/Short Courses/Visiting Lectures

    1. Training Course on UV-Vis-NIR Nanosecond and Picosecond Transient Absorption spectroscopy technics, Picosecond Fluorescence Lifetime spectroscopy technics held at Tohoku University in May, 2001.
    2. Training Course on scientific glassblowing held at Tohoku University on November, 2002.
    3. Training Course on nanotechnology microscope (TEM, SEM and AFM) held at Japan Advance institute of Science and Technology in April, 2007.
    4. Training Course on molecular dynamic calculation Gaussian held at Japan Advance institute of Science and Technology on August, 2007.
    5. Training Course on electron beam lithography held at Kyushu University in October, 2014.
    6. Training Course on molecular dynamic calculation, OLED simulation held at Kyushu University on December, 2014.

    Published as full paper at the National/International Conferences/Symposium

    1. Atula SD Sandanayaka, K. Yoshida, M. Inoue, C. Qin, K. Goushi, J-C. Ribierre, Matsushima, T. and Adachi, C. “Continuous-Wave and Quasi-Continuous-Wave Organic Thin-Film Distributed Feedback Laser.” Presented at the Interdisciplinary Science and Technology Conference – 2016 (iSciTech-2016) “Frontiers in Nanoscience and Nanotechnology”, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka on 25th-27th April, 2016.
    2. Atula S. D. Sandanayaka, Matsushima, T., Adachi, C. “Quasi Continuous-wave Lasing in Organic Thin-film Distributed Feedback systems. (21a-W521-2)” Presented at the 63rd JSAP spring meeting, Tokyo Inst. of Tech Ookayama Campus, Tokyo, Japan on 19th-22th March 2016.
    3. Atula S. D. Sandanayaka, Matsushima, T.; Adachi, C. “Quasi Continuous-wave Lasing in Organic Thin-film Distributed Feedback systems. (21a-W521-2)” Presented at the 63rd JSAP spring meeting, Tokyo Inst. of Tech Ookayama Campus, Tokyo, Japan on 19th-22th March 2016.
    4. Jean Charles Ribierre, Atula S.D. Sandanayaka, Ju-Hyung Kim, Delphine Pitrat, Li Zhao, Toshinori Matsushima, Chantal Andraud, Chihaya Adachi “Quasi-continuous-wave lasing in a solvent-free liquid molecular semiconductor. (21a-W521-3)” Presented at the 63rd JSAP spring meeting, Tokyo Inst. of Tech Ookayama Campus, Tokyo, Japan on 19th-22th March 2016.
    5. Atula S. D. Sandanayaka, Kou Yoshida, Toshinori Matsushima, and Chihaya Adachi “Exciton quenching analysis of thermally activated delayed fluorescence molecules by time-resolved photoluminance measurement.” Presented at the The International Chemical Congress of Pacific Basin Societies 2015 Honolulu, Hawaii, USA on 15th - 20th, December 2015.
    6. Toshinori Matsushima, T. Fujihara, C. Qin, Yu Esaki; S. Hwang, Atula S. D. Sandanayaka C. Adachi “Morphology control of organic-inorganic perovskite layers by hot isostaic pressing for efficient planar solar cells.” Presented at the The International Chemical Congress of Pacific Basin Societies 2015 Honolulu, Hawaii, USA on 15th - 20th, December 2015.
    7. Atula S. D. Sandanayaka, Matsushima, T.; Adachi, C. “Degradation Mechanism of Organic Light-emitting Diodes Doped with a Thermally Activated Delayed Fluorescence Emitter.” Presented at the 7th A-COE 2015, Beijing, China, October 28th -31st, 2015.
    8. Atula S. D. Sandanayaka, Matsushima, T.; Adachi, C. “Degradation analysis of organic light-emitting diodes containing thermally activated delayed fluorescence molecules.” Presented at the The 20th OLED Forum Meeting ( [有機EL討論会」第20回例会]) Chiba University, Chiba, Japan on 18th-19th June 2015.
    9. Matsushima, T., Atula S. D. Sandanayaka, Adachi, C. “Exciton decay properties thermally activated delayed fluorescence molecules (TADF分子の励起子失活特性).” Presented at the The 20th OLED Forum Meeting ( [有機EL討論会」第20回例会]) Chiba University, Chiba, Japan on 18th-19th June 2015.
    10. Atula S. D. Sandanayaka, Yoshida, K., Matsushima, T.; Adachi, C. “Exciton quenching behavior of thermally activated delayed fluorescence molecules by charge carriers.” Presented at the 62nd JSAP spring meeting, Shonan Campus, Tokai University, Japan on 11th-13th March 2015.
    11. Atula S. D. Sandanayaka, and Hideyuki Murata “Photoluminescence quenching of tris(8-hydroxyquinoline) aluminum (Alq3) excitons by carriers” Presented at The 4th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies, Kanazawa, Japan 17-20th June 2013.
    12. Atula S. D. Sandanayaka, and Hideyuki Murata “The Role of Photophysics in the Degradation of Light Emitting Diode” Presented at the 9th International Conference on Electroluminescence & Organic Optoelectronics, Fukuoka, Japan 3-7th September 2012.
    13. Atula S. D. Sandanayaka, Francis D’Souza, and Osamu Ito “Bionano Donor-Acceptor Hybrids of Porphyrin, ssDNA, and Semiconductive SWCNTs for Electron Transfer via Porphyrin Excitation” Presented at the 2nd symposium on “Carbon Nanoforms” at National Institute of Advanced Industrial Science and Technology (AIST) Tukuba, 9-10th July 2012.
    14. Araki Yasuyuki, Atula S. D. Sandanayaka, Rabbani Mohammad, Wada Takehiko, and Hasobe, Taku “Induced chirality due to axial binding of the chiral ligands to Zn porphyrin hexamer attached to triphenylene and its photochemical behaviour” Presented at the 90th Annual meeting of the chemical society of Japan, Kinki University, Osaka, Japan on March 26-29th 2010.
    15. Meda Narrsireddy, Sakai Hayato Atula S. D. Sandanayaka, and Hasobe, Taku “Synthesis and aggregate property of new coronene derivatives” Presented at the 90th Annual meeting of the chemical society of Japan, Kinki University, Osaka, Japan on March 26-29th 2010.
    16. Atula S. D. Sandanayaka, and Hasobe, Taku “Porphyrin Nanoassemblies Organized by Surfactants” Presented at the 34th International Conference & Exposition on Advanced Ceramics & Composites (ICACC) in Daytona Beach, Florida, USA January 24-29th, 2010.
    17. Atula S. D. Sandanayaka, T. Hasobe, T. Wada and Y. Araki “Size-Controlled Self-Assembled Porphyrin Nanoassemblies Organized by Ethylene Glycol Derivatives for Photophysical Studies” 215th ECS Meeting,San Francisco, CA, US,May 24 – 29th, 2009.
    18. T. Hasobe, Atula S. D. Sandanayaka, T. Wada, Y. Araki, “Structural Control of Fullerene-Encapsulated Porphyrin Nanorods and their Role in Light Energy Conversion” 215th The Electrochemical Society (ECS) Center Meeting,San Francisco, CA, US,May 24 - 29th, 2009 .
    19. Atula S. D. Sandanayaka, and Hasobe, Taku “Carbon Nanohorn-Encapsulated Porphyrin Hexagonal Nanorods for Structural and Photophysical Studies” Presented at the Japan Photochemical Association Annual meeting, Gunma University, Kiryu, Japan on September 16-18th 2009.
    20. Atula S. D. Sandanayaka, Araki Yasuyuki, Wada Takehiko, and Hasobe, Taku “Size-Controlled Porphyrin Nanoparticles for Structural and Photophysical Studies” Presented at the 89th Annual meeting of the chemical society of Japan, Funabashi Campus, Nihon University, Chiba, Japan on March 27-30th 2009.
    21. Rabbani Mohammad, Atula S. D. Sandanayaka, Araki Yasuyuki, Wada Takehiko, and Hasobe, Taku “Synthesis and Photophysical Property of Porphyrin Cyclic Hexamers with a Triphenylene Core” Presented at the 89th Annual meeting of the chemical society of Japan, Funabashi Campus, Nihon University, Chiba, Japan on March 27-30th 2009.
    22. Taku, Hasobe; and Atula S.D. Sandanayaka “Construction of Supramolecular Architectures for Light Energy Conversion” Presented at the 89th Annual meeting of the chemical society of Japan, Funabashi Campus, Nihon University, Chiba, Japan on March 27-30th 2009.
    23. Minfang Zhang , Tatsuya Murakami , Kumiko Ajima , Kunihiro Tsuchida , Atula S. Sandanayaka , Osamu Ito , Sumio Iijima , Masako Yudasaka “Fabrication of ZnPc/Protein Nanohorns for Double Photodynamic and Hyperthermic Cancer Phototherapy” Presented at the 2009 APS March Meeting, Pittsburgh, Pennsylvania on March 16-20th 2009.
    24. Atula S.D. Sandanayaka, Taku, Hasobe; and Tagmatarchis, Nikos “Covalent Functionalization of Carbon Nanohorns with Porphyrin: Photochemical Solar Cells and Photo-Induced Electron Transfer” Presented at the 88th spring meeting of the chemical society of Japan, Rikkyo University, Tokyo, Japan on March 26-30th 2008.
    25. Taku, Hasobe, Atula S.D. Sandanayaka, and Yasuyuki Araki “Preparation and Photodynamics of Fullerene Assembly-Encapsulated Porphyrin Nanorods” Presented at the 88th spring meeting of the chemical society of Japan, Rikkyo University, Tokyo, Japan on March 26-30th 2008.
    26. Oki, Hideaki; Atula S.D. Sandanayaka, Taku, Hasobe; and Murata, Hideyuki; “Structural, Electric and Optical Properties of Porphyrin Nano-Assemblies Prepared by Sonication Method” Presented at the 88th spring meeting of the chemical society of Japan, Rikkyo University, Tokyo, Japan on March 26-30th 2008.
    27. M. Zhang, M. Yudasaka, T. Murakam, K. Ajima, Atula S.D. Sandanayaka, O. Ito, K. Tsuchita, S. Iijima, “ZnPc-Nanohorn-Protein for Cancer Phototherapy” Presented at the 88th spring meeting of the chemical society of Japan, Rikkyo University, Tokyo, Japan on March 26-30th 2008.
    28. Taku Hasobe, Atula S. D. Sandanayaka, Yasuyuki Araki,Construction of Fullerene-Encapsulated Porphyrin Nanorods for Light Energy Conversion (213th ECS Center Meeting,Phoenix Convention Center, Phoenix, Arizona, Oral, May, 2008.
    29. Atula S.D. Sandanayaka, and Taku Hasobe, “Structural and Photophysical Properties of Self-Assembled Nanoarchitectures Composed of Porphyrin Derivatives” Presented at the Annual Meeting on Photochemistry (Japanese Photochemistry Association), Shinshu University, Matsumoto, Japan on September 26-28th 2007.
    30. Atula S.D. Sandanayaka, and Taku Hasobe “Supramolecular Self-Assembled Porphyrin Nanoarchitectures for Structural and Photophysical Studies” Presented at the Photochemistry Conference of Coordinated Compounds, (organized by Osaka University), Maiko villa, Kobe, Japan on August 7-9th 2007.
    31. Francis D’Souza, Raghu Chitta, Atula S.D. Sandanayaka, Amy L. Schumacher, Lawrence D’Souza, Yasuyaki Araki, and Osamu Ito, “Supramolecular Nanohybrids: Non-covalently Assembled Donor-Acceptor ZincNaphthalocyanine - Single Wall Carbon Nanotubes” Presented at the Electrochemical Society (ECS) 211th Meeting – Chicago, Illinois, on May 06 - May 10, 2007.
    32. Tetsuro Takahashi, Hiroko Yamada, Atula S.D. Sandanayaka, Osamu Ito, Kei Ohkubo, Shunichi, Fukuzumi, Hidemitsu Uno, Noboru Ono “Synthesis and Photophysical Properties of Porphyrin-Fullerene Compounds Prepared by Diels-Alder Reaction” Presented at the 2nd International Symposium on Organic Electron Transfer Chemistry (ISOETC-2007), Yokohama, Japan on January 7-10th 2007.
    33. Osamu Ito, Atula S.D. Sandanayaka, Yasuyuki Araki, Masako Yudasaka, Sumio Iijima,Nikos Tagmatarchis “Photoinduced Charge-Separation of Chemically Modified Carbon Nanohons” Presented at the 34th Fullerene Nanotubes General Symposium on the Fullerenes and Nanotubes Research Society (F-NTRS), Meijo University, Nagoya, Japan on January 7-10th 2007.
    34. Osamu Ito, Atula S.D. Sandanayaka, Yasuyuki Araki, Francis D’Souza “Photoinduced Charge Separation of Chemically Modified Carbon Nanotubes” Presented at the 34th Fullerene Nanotubes General Symposium on the Fullerenes and Nanotubes Research Society (F-NTRS), Meijo University, Nagoya, Japan on January 7-10th 2007.
    35. Koji Inada, Yasuyuki araki, Atula S.D. Sandanayaka, Osamu Ito “Photoinduced electron transfer between single-wall carbon nanotubes and C60 dispersed in D2O” February 13-15th 2007 Presented at the 34th Fullerene Nanotubes General Symposium on the Fullerenes and Nanotubes Research Society (F-NTRS), Meijo University, Nagoya, Japan on January 7-10th 2007.
    36. Chitta, Raghu; Sandanayaka, Atula S. D.; Schumacher, Amy Lea; D'Souza, Lawrence; Araki, Yasuyaki; Ito, Osamu; D'Souza, Francis. Non-covalently linked and self-assembled zinc porphyrin/zinc naphthalocyanine-SWCNT nanohybrids for photoinduced electron transfer. 233rd ACS National Meeting, Chicago, IL, United States, March 25-29, 2007 (2007), ORGN-838. Publisher: (American Chemical Society, Washington, D. C) CODEN:69JAUY.
    37. Atula S.D. Sandanayaka, Yasuyuki Araki, and Osamu Ito, “Photoinduced Electron Transfer of Chemically Modified Carbon Nanohorn in solution ” Presented at the Nanohorn work shop 2006, (organized by NEC), Miraikan, Tokyo, Japan on November 19-20th 2006.
    38. N. Tagmatarchis, G. Pagona, Atula S.D. Sandanayaka, O. Ito, M. Yudasaka and S. Iijima, “Soluble Functionalized Carbon Nanohorns in Donor-Acceptor Nanoensembles” Presented at the Electrochemical Society (ECS) 210th Meeting – Cancun, Mexico, on October 29 - November 03, 2006.
    39. Atula S.D. Sandanayaka, Yasuyuki Araki, and Osamu Ito, “Photoinduced Electron Transfer of Chemically Modified Carbon Nanomaterials ” Presented at the Molecular Nano Dynamic (KAKENHI, MEXT), Centennial Hall, School of Medicine, Kyushu University, Kyushu, Japan on October 12-13th 2006.
    40. Atula S.D. Sandanayaka, Hisahiro Sasabe, Nobuhiro Kihara, Yasuyuki Araki, Yoshio Furusho, Toshikazu Takata, and Osamu Ito, “Photoinduced Multiple Electron Transfer Processes in Zinc Porphyrin - [60]Fullerene Rotaxanes with Triphenylamine as Charge Shift” Presented at the Annual Meeting on Photochemistry (Japanese Photochemistry Association), Tohoku University, Sendai, Japan on September 11-12th 2006.
    41. Osamu Ito, Atula S.D. Sandanayaka, Yasuyuki Araki, Yuuki Sako, Mitsuhiro Tamura, Yutak Takaguchi, “Photoinduced Electron Transfer in Supramolecular between SWNT Surrounded by Fullerodendritic Poly(amidoamine) carboxylate in Aqueous Media” Presented at the Electrochemical Society (ECS) 209th Meeting – Denver, Colorado, USA, on 7-11th may 2006.
    42. Osamu Ito, Atula S.D. Sandanayaka, Hisahiro Sasabe, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, “Effect of Charge of Axle on Light Induced Molecular Motion in Photoinduced Processes in Rotaxanes Containing [60]Fullerene and Ferrocene” Presented at the Electrochemical Society (ECS) 209th Meeting – Denver, Colorado, USA, on 7-11th may 2006.
    43. Stéphanie CHOPIN, Jack COUSSEAU, Eric LEVILLAIN, Concepcio ROVIRA, Jaume VECIANA, Atula S.D. SANDAYANAKA, Yasuyuki ARAKI, Osamu ITO “[60]Fullerene-perchlorotriphenylmethide anion Triad synthesis and photoinduced electron-transfer processes” Presented at the Electrochemical Society (ECS) 209th Meeting – Denver, Colorado, USA, on 7-11th may 2006.
    44. Atula S. D. Sandanayaka, Hisahiro Sasabe, Nobuhiro Kihara, Yasuyuki Araki, Yoshio Furusho, Toshikazu Takata, and Osamu Ito, Photoinduced Electron Transfer Processes in Three Components Rotaxane containing Zinc Porphyrin, [60]Fullerene and Triphenylamine Presented at the XXIst IUPAC Symposium on Photochemistry Terrsa Hall, Kyoto, Japan on 2-7th April 2006.
    45. Osamu Ito, Atula Sangarange Don Sandanayaka, Hiroshi Sasabe, Toshikazu Takata Photoinduced through Space Electron Transfer in Rotaxane pending Fullerene[60] with Light-Driven Mechanical Motion Presented at the XXIst IUPAC Symposium on Photochemistry Terrsa Hall, Kyoto, Japan on 2-7th April 2006.
    46. Jonathan P. Hill, Wolfgang Scmitt, Atula S. D. Sandanayaka, Amy Lea McCarty, Paul A. Karr, Melvin E. Zandler, Katsuhiko Ariga, Yasuyuki Araki, Osamu Ito and Francis D' Souza Xanthoporphyrinogen Derivatives: New Redox-Active Chromophores Presented at the International Symposium on Molecular Scale Electronics in conjunction with 6th Molecular Scale Electronics workshop in Japan, Tsukuba, Japan on 5-6th December 2005.
    47. Atula S. D. Sandanayaka, Hisahiro Sasabe, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, Kazuhiko Mizuno, and Osamu Ito Photoinduced Electron and Energy Transfer Processes in Rotaxanes containing Zinc Porphyrin as Pendant and [60]Fullerene as Stoppers of Axle Presented at the 5th IMRAM Symposium - 2005 Institute of Multi-disciplinary Research for Advanced Materials, Tohoku University, Katahira, Sendai, Japan on 1st December 2005.
    48. J. P. Hill, A. S. D. Sandanayaka, A. L. McCarty, P. A. Karr, M. E. Zandler, R. Charvet, K. Ariga, Y. Araki, O. Ito, F. D Zouza A Tetrapyrrole That Thinks It is a Quinone Presented at the 1st international symposium on chemistry of coordination space (ISCCS) Okazaki conference centre, Okazaki, Aichi, Japan on 14-15th November, 2005.
    49. Atula S. D. Sandanayaka, Hisahiro Sasabe, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, Kazuhiko Mizuno, and Osamu Ito, Photoinduced Electron and Energy Transfer Processes in Rotaxanes containing Zinc Porphyrin as Pendant and [60]Fullerene as Stoppers of Axle; Effect of Charge of Axle Presented at the 2005 Korea-Japan Symposium on Frontier Photoscience “Photochemsitry and Nanotechnology” Hanwha Resort Haeunde, Busan, Korea, on 7-11th October 2005.
    50. Atula S. D. Sandanayaka, Yoshiki Taguri, Yasuyuki Araki, Tsutomu Ishi-I Shuntaro Mataka, and Osamu Ito Photoinduced Charge Separation and Charge Recombination in [60]Fullerene-Diphenylbenzothiadiazole-Triphenylamine Triad; Effect of Twisted Intramolecular Charge-Transfer of Diphenylbenzothiadiazole Presented at the 2005 Korea-Japan Symposium on Frontier Photoscience “Photochemsitry and Nanotechnology” Hanwha Resort Haeunde, Busan, Korea, on 7-11th October 2005.
    51. Osamu Ito, Atula S. D. Sandanayaka, Yasuyuki Araki, Yutaka Takaguchi, Yuuki Sako, and Mitsuhiro Tamura Photoinduced Electron Transfer in Supramolecular between Single Wall Carbon Nanotubes Surrounded by Fullerene Bearing Dendritic Poly(amidoamine) with Carboxylates at the Terminal in Aqueous Media Presented at the 2005 Korea-Japan Symposium on Frontier Photoscience “Photochemsitry and Nanotechnology” Hanwha Resort Haeunde, Busan, Korea, on 7-11th October 2005.
    52. O. Ito, A.S.D. Sandanayaka, Y. Araki, T. Takata, K.-I. Ikeshita, Y. Furusho, and H. Sasabe Photoinduced Electron- and Energy-Transfer Processes in Rotaxane Containing Zinc Porphyrin, [60]Fullerene, and Triphenylamine Presented at the XXII International Conference on Photochemistry Cairns Convention Centre, Queensland, Australia on 24-29th July 2005.
    53. F. D'Souza, R. Chitta, S. Gadde, M. Zandler, A. Sandanayaka, Y. Araki and O. Ito Metalloporphyrins Bearing Crown Ether Voids: Building Blocks of Supramolecular Donor-Acceptor Architecture Presented at the Electrochemical Society (ECS) 207th Meeting – Quebec City, Canada on 15th may 2005.
    54. T. Takata, H. Sasabe, A. Sandanayaka, Y. Araki and O. Ito Supramolecular [60]Fullerene-Donor Dyad and Triad Systems: Effect of Rotaxane Structure on Photoinduced Electron-Transfer Presented at the Electrochemical Society (ECS) 207th Meeting – Quebec City, Canada on 15th may 2005.
    55. O. Ito, A. Sandanayaka and T. Takata Photoinduced Electron- and Energy-Transfer Processes of [60]fullerene Covalently Bonded with One and Two Zinc Porphyrin(s): Effects of Coordination of Pyridine and Diazabicyclooctane to Zn atom Presented at the Electrochemical Society (ECS) 207th Meeting – Quebec City, Canada on 15th may 2005.
    56. Osamu Ito, Yasuyuki Araki, Yuichiro Yasumura, A.S.D.Sandanayaka, Hisahiro Sasabe, Toshikazu Takata Photoinduced Processes Between C60 and Ferrocene Derivatives; Electron-Transfer vs. Energy-Transfer Presented at the Electrochemical Society (ECS) 207th Meeting – Quebec City, Canada on 15th may 2005.
    57. A.S.D. Sandanayaka, O. Ito, Y. Araki, T. Takata, K.-I. Ikeshita, Y. Furusho, and H. Sasabe “Fullerene [C60] and Amine Donors Tethered Rotaxanes: Photoinduced Electron Transfer Processes via Excited Triplet States of C60” Presented at the Electrochemical Society (ECS) 206th Meeting – Honolulu, Hawaii on 3rd October 2004.
    58. A.S.D. Sandanayaka, H. Sasabe, N. Watanabe, Y. Furusho, T. Takata. Ito, Y. Araki, , “Photoinduced Intra-rotaxane Electron Transfer between Triphenylaminand C60 via Through-space Mechanism” Chemical Society of Japan including the conference held at Kwansei Gakuin University, Kobe, Japan on 26th March 2004.
    59. O. Ito, Y. Araki, A.S.D. Sandanayaka, N. Watanabe, N. Kihara, Y. Furusho, and T. Takata “Photoinduced Electron Transfer Reaction in Rotaxane Structure Containing C60 and Zinc Porphyrin” Presented at The Electrochemical Society (ECS) 203rd Meeting - Paris, France on 29th April 2003.
    60. I. Keiichiro, N. Watanabe, Y. Furusho, T. Takata. A.S.D. Sandanayaka Ito, Y. Araki, “Synthesis of Amide-Based Rotaxanes Having Fullerene Units” Chemical Society of Japan including the conference held at the University of Waseda, Tokyo, Japan on 19th March 2003.
    61. A.S.D. Sandanayaka, Y. Araki, M Fujitsuka, O. Ito, “Dynamic Quenching and Photoinduced Electron Transfer processes of Fullerene (C60) with High Concentration Amine Donors” presented in the chemical society of Japan including the conference held at the University of Waseda, Tokyo, Japan on 19th March 2003.
    62. A.S.D. Sandanayaka, Y. Araki, M Fujitsuka, O. Ito, “Study of photoinduced Electron Transfer process of Fullerenes (C60/ C70) with Highly Concentrated Donors” presented at conference held at the University of Hirosaki, Hirosaki, Japan on 6th October 2002.

    Chapters and Books of Scholarly Work

    1. Osamu Ito, Atula S. D. Sandanayaka, and Francis D’Souza “Photoinduced Electron Transfer of SWCNT-Based Supramolecular Nanoarchitectures with Photosensitizing Molecules” Transactions of the Materials Research Society of Japan, 2011, 36 (3). 341-544.
    2. Atula S. D. Sandanayaka, Y. Araki, O. Ito and T. Takata “Photoinduced Electron Transfer of Rotaxanes Containing Fullerene” Encyclopedia of Nanoscience and Nanotechnology, Nalwa, H. S., Ed.; American Scientific Publishers: California, 2009: Vol. 9, pp. 473-513.
    3. F. D'Souza, A. L. Schumacher, J. P. Hill, P. A. Karr, Y. Xie, K. Ariga, Atula S. D. Sandanayaka, Y. Araki, and O. Ito, “Oxoporphyrinogens: From Redox and Spectroscopic Probe for Anion Sensing to a Platform for Construction of Supramolecular Donor-Acceptor Conjugates” Fullerenes, Nanotubes, and Carbon Nanostructures, The Electrochemical Society series; (ECS) Pennigton, Phoenix, AZ, May 18 - May 23, 213th ECS Meeting, ECS Transactions, Vol. 13,Issue 14 2008 (127-136).
    4. Atula S. D. Sandanayaka, Yasuyuki Araki, Osamu Ito, Nobuhiro Watanabe, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata “Photoinduced Electron Transfer Processes of [C60]Fullerene and Zinc Porphyrin in Rotaxane Structures” Fullerenes and nanotubes-the building blocks of next generation nanodevices, The Electrochemical Society series; (ECS) Pennigton, NJ,PV 2003-10-Fullerenes Vol. 13, 2003 (120).

    Recognized National/International awards for learning, research and teaching

  • RECOGNIZED INTERNATIONAL / NATIONAL AWARDS & FELLOWSHIPS

    1. JSPS Research Fellowships for Young Scientists from the Japanese government conducted at the School of Material science, Japan Advance Institute of Science and Technology, Japan (2008-2010).
    2. COE research grant for the third year of my Doctor Course (2006).
    3. Monbukagakusho Scholarship for Ph.D./M. Sc. study at Tohoku University, Japan (2001-2007).
    4. Mahapola Scholarship for B. Sc. study at University of Sri Jayewardenepura, Sri Lanka (1992-1996).
    5. CIC (Colombo Ltd.) award in 1995 for best performance in third year examinations in B.Sc. special degree in Chemistry. 
    6. CIC (Colombo Ltd.) award in 1996 for best overall performance in B.Sc. special degree in Chemistry. 

     

    Patents Received

    1. Organic light-emitting element, Publication date:2020/8/13; Patent office; US; Application number:16628125.
    2. Host material, film and an organic light-emitting element, Inventors: Publication date: 2020/7/9; Patent office: US; Application number:16640767.
    3. Organic electroluminescent device, compound and use thereof, Inventors: Publication date:2020/2/20; Patent office: US; Application number:16487277.
    4. Current-injection organic semiconductor laser diode, method for producing same and program, Publication date:2020/1/23; Patent office: US; Application number:16338123
    5. Triplet State Eliminator, Thin Film, Laser Oscillation Element and Compound Japanese Patent Application No. 2015-039858 filed on March 2, 2015
    6. Continuous-Wave Organic Thin-Film Distributed Feedback Laser and Electrically Driven Organic Semiconductor Laser Diode Korean Patent Application No. 10-2017-0027963 filed on March 3, 2017, International Patent Application No. PCT/JP2017/033366 filed on September 1, 2017 and Taiwan Patent Application No. 106130060 filed on September 1, 2017
    7. Electrically Driven Organic Semiconductor Laser Diodes Japanese Patent Application No. 2017- 020797 filed on February 7, 2017 and International Patent Application No. PCT/JP2018/005362 filed on February 7, 2018
    8. Organic Light-Emitting Element Japanese Patent Application No. 2018-043525 filed on March 9, 2018
    9. Host Material, Film and Organic Light-Emitting Element Japanese Patent Application No. 2018-116173 filed on June 19, 2018
    10. 三重項除去剤、薄膜、レーザー発振素子および化合物 特願2015-39858/PCT/JP2016/ 55837
    11. Film, Method for Preparation thereof and Light-emitting Device 特願2017- 9284/特願2017-096689
    12. Extremely low amplified spontaneous emission threshold and blue electroluminescence from a spin-coated octafluorene neat film 特願2017-136063.
    13. Low threshold continuous-wave operation of organic semiconductor lasers in preparation Patent No; QP18A008, 2018.
    14. Low threshold organic semiconductor lasers No; QP19A006, 2018
    15. Solution-Processable Organic Semiconductor Chromophores for Continuous Wave Lasing Patent No; QP19A005, 2019.
    16. BSBCz and λ5-Phosphinine as a Host-Guest Matrix for Organic Semiconductor Lasing Patent No; JP2019-178599, 2019.

    Positions Held/Hold or service Rendering/Rendering (University Level/National Level/International Level)

  • POSITIONS HELD/HOLD

    1. 2020/March – Present     Professor (Chair)

    Department of Physical Sciences and Technology, Faculty of Applied Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka.

    1. 2018/September – 2020/March     Professor

    Center for Organic Photonics and Electronics Research (OPERA), Kyushu University National University Corporation, Fukuoka, Japan.

    1. 2016/April – 2018/August     Associate Professor

    Center for Organic Photonics and Electronics Research (OPERA), Kyushu University National University Corporation, Fukuoka, Japan.

    1. 2014/May – 2016/March      Post-doctoral Research Fellow

    Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, National University Corporation, Fukuoka, Japan,

    1. 2011/January – 2014/April      Research Fellow

    School of Material science, Japan Advance Institute of Science and Technology, Ishikawa, Japan.

    1. 2010/August - 2010/December     Lecturer

    The Dept. of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka.

    1. 2008/April - 2010/August     JSPS Postdoctoral Fellow

    School of Material science, Japan Advance Institute of Science and Technology, Ishikawa, Japan.

    1. 2007/April - 2008/March     Research Fellow

    School of Material science, Japan Advance Institute of Science and Technology, Ishikawa, Japan.

    1. 1999/October - 2007/August     Lecturer

    The Dept. of physical sciences, Faculty of Applied Sciences, Sabaragamuwa University of Sri Lanka, Sri Lanka.

    1. 1997/August - 1999/August     Assistant Lecturer

    The Dept. of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka.

    1. 1996/June - 1997/March     Demonstrator (Tutor)

    The Dept. of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka.

     

    INTERNATIONAL COLLABORATIONS

    1. Prof. Francis D'Souza, (University of North Texas, USA) Area of Collaboration: Synthesis of nanomaterials.
    2. Dr. Nikos Tagmatarchis, (Theoretical and Physical Chemistry Institute, Greece) Area of Collaboration: Synthesis of nanomaterials.
    3. Prof. Art van der Est, (Brock University, Canada) Area of Collaboration: Preparation of nanohybrids.
    4. Prof. L. Fernando (UCLM, Spain) Area of Collaboration: Preparation and synthesis of nanohybrids.
    5. Prof. Anthony D'Aléo (CINaM, France) Area of Collaboration: OLEDs
    6. Dr. Remi Anemian (Merck Performance Materials, Korea) Area of Collaboration: OLEDs
    7. Dr. Dao Thanh Toan (Uni.edu. in Vietnam) Area of Collaboration: Transistor
    8. Dr. Nur Tahirah Razali (UNIMAS, Malaysia) Area of Collaboration: Organic solar cell

    In Japan

    1. Prof. Chihaya Adachi (OPERA, Kyushu University)
    2. Prof. Osamu Ito (Emeritus Professor of Tohoku University)
    3. Prof. Sumio Iijima (Emeritus Professor of Meijo University)
    4. Prof. Hiroyoshi Naito (Osaka Prefecture University)
    5. Prof. Hideyuki Murata (Japan Advanced Institute of Science and Technology, JAIST)
    6. Prof. Toshinori Matsushima (OPERA, Kyushu University)
    7. Prof. B.Jayadevan (Shiga University)
    8. Prof. Jean-Charles Ribierre (OPERA, Kyushu University)
    9. Prof. Yasuyuki Araki (Tohoku University)
    10. Prof. Ryota Kabe (OPERA, Kyushu University)
    11. Dr. Jhon Cuya Huamann Leyman (Shiga University)
    12. Prof. Taku Hasobe (Keio University)

    Undergraduate Teaching

    • 2 Years at undergraduate level at the Sabaragamuwa University and 2 years at undergraduate level at the University of Sri Jayewardenapura - Basic Chemistry (Organic, Inorganic and Physical chemistry), 1997-2001
    • 15 Years of Research Experience / Conducting seminars for undergraduate students - Nanochemistry, Photochemistry, Electrochemistry, and Supramolecular Chemistry, 2001-2011
    • 3 Years of Research Experience / Conducting seminars for undergraduate students student - Chemistry and Physics of Solar Energy and Organic Photovoltaics, 2007-2010
    • 5 Years of Research Experience / Conducting seminars for undergraduate students - Chemistry and Physics of Organic Light-Emitting Device (OLED) and Nanopattern 2011-Present

    Postgraduate Teaching

    • 15 Years of Research Experience / Conducting seminars for postgraduate students - Nanochemistry, Photochemistry, Electrochemistry, and Supramolecular Chemistry, 2001-2011
    • 3 Years of Research Experience / Conducting seminars for postgraduate students - Supramolecular Architecture for Light Energy Conversion, 2007-2010
    • 3 Years of Research Experience / Conducting seminars for postgraduate students student - Chemistry and Physics of Solar Energy and Organic Photovoltaics, 2007-2010
    • 15 Years of Research Experience - Nanoscience and technology, Nanochemistry and Nanomaterial, 2001-2011
    • 5 Years of Research Experience / Conducting seminars for postgraduate students - Chemistry and Physics of Organic Light-Emitting Device (OLED) and nanopattern 2011-present

    Any Other

  • EXPERTISE IN HANDLING SOPHISTICATED INSTRUMENTS

    1. Synthetic: GPC-HPLC Chromatography System, GPC Chromatography System for Separation, Glove Box(KIYON), 800 MHz NMRSpectroscopic (AVANCE Ⅲ 800, Bruker BioSpin), MALDI/TOF MASS Spectroscopic (QP-5000), FT-IR Spectroscopic System.
    2. Electrochemical Measurement: UV-Vis-NIR Spectrometer [Perkin Elmer Lambda 750], Agilent 8453 Spectrophotometer, Fluorescence Spectrometer [Perkin Elmer LS 55], UV-Vis-NIR Nanosecond and Picosecond Transient Absorption Measurement, Picosecond Fluorescence Lifetime Measurement, Solar Simulator and IPCE Measurement Systems (Bunko-Keiki, Co. LTD.).
    3. Fabrication of Thin Films: Vapor Deposition System (CVD, ALS Technology), Spin-Coating Machine, Electrophoretic System, Non-Vacuum Mixer, Smashing Machine.
    4. Structural Evaluation of Molecular Assemblies: Powder X-Ray Diffractometer (RINT2100, RINT2500 and SmartLab, Rigaku), Size Analysis of Particle [Dynamic Light Scattering], Zeta Potential Analysis.
    5. Nanopattern: Electron beam lithography (JBX-5000SL, JEOL Co.) and Ion etching (RIE) system (RIE-10NR-K1, Samco Co.).
    6. Microscope: Fluorescence Microscope, 200kV Scanning Transmission Electron Microscope (STEM, JEM-ARM200F, JEOL), Scanning Electron Microscope (SEM S-4100, S-4500 and S-5200, Hitachi), Transmission Electron Microscopy (TEM; Hitachi, 100kV/H-7100, 100kV/H-7650 and 300kV/H-9000NAR), Atomic Force Microscope (AFM, VK-9700), Photoelectron Spectrometer (AC-2) and 3D nano-Raman system (Nanofinder30-AFM).
    7. Computer Competency: Computational Simulation, Molecular dynamic calculation and Simulating, Chembio draw ultra 13, Materials Studio, Spartan, Scilab, Gaussian, Macro model, Setfos, and SimOLED.