Research articles

2026

• Prediction of Helical Twisting Power Using Machine Learning and Its Correlation with Molecular Structures, Yuto Ueda, Kohsuke Matsumoto, Aoi Nakamura, Osamu Tsutsumi, ChemRxiv (2026) (preprint)
• Long-Range Self-Ordering of Liquid Crystal Polymer Particles via Step-by-Step Adsorption, Tomoki Shigeyama, Maki Ogata, Kohsuke Matsumoto, Kyohei Hisano, Osamu Tsutsumi, ChemRxiv (2026) (preprint)
• Sustainable Conversion of Elemental Sulfur to Fluorescent Luminophore, Joginder Singh, Aishwarya Tiwari, Usha Gavel, Pragadeeswara Venkatamani Gunasekaran, Arushi Rawat, Rakesh Kumar Rai, Narattam Sikdar, Abhilash Sahu, Kohsuke Matsumoto, Osamu Tsutsumi, Aravind Kumar Rengan, Ganesan Prabusankar, ACS Appl. Opt. Mater., in press (2026)
• Multilayer Mechanical Transduction Activates Compression-Mode Mechano-Optical Response in Chiral Nematic Liquid Crystal Elastomers, Ryota Morimoto, Maki Ogata, Kohsuke Matsumoto, Kazuhiro Shimonomura, Osamu Tsutsumi, Aggregate, 7, e70438 (2026)
• Side-chain engineering reprogrammes columnar lattice symmetry in luminescent cyclic trinuclear gold(I) complexes, Abhilash Sahu, Arushi Rawat, Kohsuke Matsumoto, Ganesan Prabusankar, Osamu Tsutsumi, Mater. Adv., in press (2026)
• High Spatial Resolution Tactile Image Sensor Employing Strain-Sensing Polymer, Daiki Ishida, Osamu Tsutsumi, Kazuhiro Shimonomura, J. Robot. Mechatron., 38, 1010–1017 (2026)
• Heavy-Atom Driven Enhancement of Solid-State Luminescence in Cd(II)-Halide N-Heterocyclic Chalcogenones, Bikash Lahkar, Suman Mandal, Girbide Amitkumar Ramakant, Rakesh Kumar Rai, Gopendra Muduli, Abhilash Sahu, Arushi Rawat, Kohsuke Matsumoto, Osamu Tsutsumi, Aravind Kumar Rengan, Ganesan Prabusankar, J. Phys. Chem. Lett., 17, 8839–8847 (2026)
• Machine Learning Prediction of Aggregation-Induced Emission Energies for Organic Luminogens and Metal Complexes Using Physicochemical Descriptors, Kohsuke Matsumoto, Aoi Nakamura, Yui Ieki, Yuto Ueda, Osamu Tsutsumi, ChemPhotoChem, 10, e70233 (2026)
• Polyaromatic Cation Engineering in Copper(I) Halide Hybrids for White Lighting, Gopendra Muduli, Dinesh Harijan, Abhilash Sahu, Joginder Singh, Girbide Amitkumar Ramakant, Arushi Rawat, Kohsuke Matsumoto, Osamu Tsutsumi, Ganesan Prabusankar, ACS Appl. Opt. Mater., 4, 1861–1872 (2026)
• Emission Modulation in NHT-Based Dinuclear Copper(I) Iodide Complexes by N-Aryl Substituents, Sabari Veerapathiran, Gopendra Muduli, Arushi Rawat, Joginder Singh, Kohsuke Matsumoto, Osamu Tsutsumi, Ganesan Prabusankar, ACS Appl. Opt. Mater., 4, 1339–1350 (2026)
• Red-to-NIR luminescent trinuclear gold(I) complexes with exceptionally wide liquid crystalline temperature range, Tamon Nakao, Abhilash Sahu, Kenta Yamaguchi, Arushi Rawat, Kosuke Kaneko, Kohsuke Matsumoto, Ganesan Prabusankar, Osamu Tsutsumi, J. Mater. Chem. C, 14, 8586–8600 (2026)
• A Copper(I)-Carbene Complex With High Quantum Yield for White Light Emitting Application, Subramaniyam Kalaivanan, Gopendra Muduli, Sibani Mund, Kumar Siddhant, Arushi Rawat, Kohsuke Matsumoto, François Réveret, Federico Cisnetti, Osamu Tsutsumi, Sivakumar Vaidyanathan, Ganesan Prabusankar, Adv. Opt. Mater., 14, e03640 (2026)
• Clusterization-Induced Emission Shift in Copper(I) Thiones, Bikash Lahkar, Dinesh Harijan, Gopendra Muduli, Rakesh Kumar Rai, Arushi Rawat, Abhilash Sahu, Kohsuke Matsumoto, Osamu Tsutsumi, Federico Cisnetti, Francois Reveret, Aravind Kumar Rengan, Ganesan Prabusankar, J. Phys. Chem. Lett., 17, 83–93 (2026)
• Anisotropic Mechano-Optical Properties of Chiral Nematic Liquid Crystal Elastomers with Uniaxial In-Plane Helical-Axis Alignment, Yuki Shikata, Maki Yanagihara, Kohsuke Matsumoto, Osamu Tsutsumi, Small Struct., 7, e202500553 (2026)

2025

• Supramolecular Polymer with Multi-Responsive Luminescence Formed by the First Tetracoordinated Au(I) Carbene Complex, A. Sathyanarayana, K. Siddhant, G. Muduli, G. Prabusankar, O. Tsutsumi, ChemRxiv (2025) (preprint)
• Blue Fluorescent Dinuclear Copper(II) Complex for Light-Emitting Applications, Bikash Lahkar, Suman Mandal, Gopendra Muduli, Arushi Rawat, Abhilash Sahu, Kohsuke Matsumoto, Osamu Tsutsumi, Ganesan Prabusankar, ACS Appl. Opt. Mater., 3, 2566–2573 (2025)
• Eliminating π-Conjugation to Enhance Aurophilic Interactions and Aggregation-Induced Phosphorescence in Au(I) Complexes, Andriani Furoida, Kazuhisa Ozaki, Ryoko Niimi, Arushi Rawat, Kohsuke Matsumoto, Kaori Fujisawa, Osamu Tsutsumi, Chem. Commun., 61, 18172–18175 (2025)
• Selective Sensing of the Fluoride Ion in Water and B16F10 Cells by Naphthoimidazolium Salts, Rakesh Kumar Rai, Chandra Lekha Putta, Bikash Lahkar, Arushi Rawat, Abhilash Sahu, Kohsuke Matsumoto, Osamu Tsutsumi, Aravind Kumar Rengan, Ganesan Prabusankar, ACS Appl. Bio Mater., 8, 6999–7010 (2025)
• Revealing the Origin of Emission Quenching on Trivalent Europium β-Diketonate Complex Nanoparticles, Shunsuke Kobashi, Yoshinori Okayasu, Kohsuke Matsumoto, Osamu Tsutsumi, Yoichi Kobayashi, Chem. Eur. J., 31, e202500952 (2025)
• Influence of alkyl chain length and bromine substitution on thermal, photophysical, and optical properties of biphenyl luminescent molecules, Hussain Sami, Amina A Abozeed, Osamu Tsutsumi, Xinchun Yang, Osama Younis, Opt. Mater., 159, 116533 (2025)
• Fluorescent zinc (ii) thione and selone complexes for light-emitting applications, Suman Mandal, Bikash Lahkar, Gopendra Muduli, Arushi Rawat, Abhilash Sahu, Osamu Tsutsumi, Ganesan Prabusankar, Dalton Trans., 54, 1384–1392 (2025)
• N-Alkyl Chain Induced Molecular Aggregation in Mononuclear Gold (I)-N-Heterocyclic Carbene Complexes for Blue Light Emitting Applications, Gopendra Muduli, Moulali Vaddamanu, Arruri Sathyanarayana, Kumar Siddhant, Arushi Rawat, Kyohei Hisano, Osamu Tsutsumi, Ganesan Prabusankar, Chem. Asian J., 20, e202401356 (2025)
• Synthesis of novel bioactive amides derived from carbazole moiety with deep-blue and single-component white photoluminescence, Mostafa Ahmed, Mostafa Sayed, A F Al-Hossainy, Mahmoud S Tolba, Osamu Tsutsumi, Osama Younis, J. Photochem. Photobiol. A: Chem., 466, 116394 (2025)
• Modulation of Luminescent Behaviour in N-Heterocyclic Thiones, Joginder Singh, Gopendra Muduli, Sabari Veerapathiran, Arushi Rawat, Nandeshwar Muneshwar, Abhilash Sahu, Kohsuke Matsumoto, Osamu Tsutsumi, Ganesan Prabusankar, J. Mater. Chem. C, 13, 14251–14260 (2025)
• Aggregation-Controlled Dual-Emissive Room-Temperature Phosphorescence in Gold(I) N-Heterocyclic Carbene Complexes, Kumar Siddhant, Arushi Rawat, Kohsuke Matsumoto, Yuki Nagai, Yoichi Kobayashi, Ganesan Prabusankar, Osamu Tsutsumi, J. Phys. Chem. C, 129, 11131–11142 (2025)
• Synergistic Control of Liquid Crystallinity and Phosphorescence in Gold (I) Complexes via Strategic Alkyl Chain Design, Rawat, Arushi; Matsumoto, Kohsuke; Prabusankar, Ganesan; Tsutsumi, Osamu, Crystals, 15, 554, 2025
• Near Blue Light Emitting Benzimidazol-2-thione, Bikash Lahkar, Gopendra Muduli, Suman Mandal, Arushi Rawat, Abhilash Sahu, Kohsuke Matsumoto, Osamu Tsutsumi, Ganesan Prabusankar, Mater. Adv., 6, 5056–5063 (2025)

2024

• In-Plane Uniaxial Helical-Axis Alignment in Chiral-Nematic Liquid Crystal Polymer Films using Photo-Gradient Polymerization, Yuki Shikata, Shohei Sugiyama, Kohsuke Matsumoto, Kyohei Hisano, and Osamu Tsutsumi, Small Struct., 6, 2400458 (2024)
• Organo Chalcogenone-Triggered Luminescent Copper(I) Clusters for Light Emitting Application, Sabari Veerapathiran, Gopendra Muduli, Arushi Rawat, Kumar Siddhant, Joginder Singh, Kohsuke Matsumoto, Osamu Tsutsumi, Ganesan Prabusankar, Inorg. Chem., 63, 12708–12720 (2024)
• Unravelling the crystallization mechanism of trinuclear Au complexes through crystal size-dependent luminescence, Andriani Furoida, Urara Shiina, Kohsuke Matsumoto, Osamu Tsutsumi, Chem. Lett., 53, upae121 (2024)
• Tricolour Luminescence in Au(I) Complex Controlled by Polymorphism and Mechanical Stress, Andriani Furoida, Misato Daitani, Kohsuke Matsumoto, Kyohei Hisano, Osamu Tsutsumi, Mater. Adv., 5, 5052–5062 (2024)
• Exploring the Multi-State Photoluminescence of a Thermally Stable and Liquid Crystalline Organic Molecule, Amina A Abozeed, Hussain Sami, Ahmed F Al-Hossainy, Osamu Tsutsumi, Osama Younis, J. Lumin., 269, 120523 (2024)
• Experimental and Theoretical Optical Characterization of a Relatively Simple Organic Molecule Incorporating Biphenyl, Methacrylate, Trimethylsilyl Acetylene, and Liquid Crystal, Amina A Abozeed, Ahmed F Al-Hossainy, Osamu Tsutsumi, Osama Younis, Opt. Mater., 151, 115324 (2024)

2023

• Sign reversal of the spontaneous and induced polarization in a mixture of achiral liquid crystal host and chiral azo dopant, Osamu Tsutsumi, Makoto Nakano, Gurumurthy Hegde, Lachezar Komitov, Liquid Crystals, 50, 872–880 (2023)
• Thermally Stable Carbazole Tagged Au(I)-Mesoionic N-Heterocyclic Carbene Complexes with Diverse Gold-Hydrogen Bonds, Subramaniyam Kalaivanan, Vaddamanu Moulali, Kumar Siddhant, Kavitha Velappan, Kyohei Hisano, Osamu Tsutsumi, Ganesan Prabusankar, New J. Chem., 47, 491–499 (2023)
• Tunable Reflection through Size Polydispersity of Chiral-Nematic Liquid Crystal Polymer Particles, Tomoki Shigeyama, Kohsuke Matsumoto, Kyohei Hisano, Osamu Tsutsumi, Molecules, 28, 7779 (2023)
• Angular-Dependent Back Reflection of Chiral-Nematic Liquid Crystal Microparticles as Multifunctional Optical Elements, Tomoki Shigeyama, Kohsuke Matsumoto, Kyohei Hisano, Osamu Tsutsumi, Crystals, 13, 1660 (2023)
• Interfacial Strain Analysis of Bending Bilayer Silicone Elastomer Films Using a Cholesteric Liquid Crystal Sensor, Masayuki Kishino, Norihisa Akamatsu, Ryo Taguchi, Kyohei Hisano, Osamu Tsutsumi, Atsushi Shishido, ACS Appl. Eng. Mater., 1, 1669-1675 (2023)

2022

• Luminescent Behavior of Liquid–Crystalline Gold(I) Complexes Bearing a Carbazole Moiety: Effects of Substituent Bulkiness, Kumar Siddhant, Ganesan Prabusankar, Osamu Tsutsumi, Crystals, 12, 810 (2022)
• Solid-State Luminescent Materials Containing Both Indole and Pyrimidine Moieties: Design, Synthesis, and Density Functional Theory Calculations, Osama Younis, Mostafa Sayed, Ahmed AK Mohammed, Mahmoud S Tolba, Reda Hassanien, Adel M Kamal El-Dean, Osamu Tsutsumi, Mostafa Ahmed, ACS Omega, 7, 15016–15026 (2022)
• Synthesis and Strong π–π Interaction of Hexaazatriphenylene Derivatives with Alternating Electron-Withdrawing and -Donating Groups, Akira Hinokimoto, Toshinori Ono, Makoto Fujiwara, Hiroki Mori, Ryohei Akiyoshi, Shin-ya Nakamura, Osamu Tsutsumi, Akinori Saeki, Yasutaka Kitagawa, Satoshi Horike, Daisuke Tanaka, Chem. Asian J., 17, e202200225 (2022)
• Tuning the Au–Au interactions by varying the degree of polymerisation in linear polymeric Au(I) N-heterocyclic carbene complexes, Arruri Sathyanarayana, Kumar Siddhant, Masaya Yamane, Kyohei Hisano, Ganesan Prabusankar, Osamu Tsutsumi, J. Mater. Chem. C, 10, 6050–6060 (2022)
• A Simple and Efficient Approach for the Clickability of Super-Bulky Aryl Azides, Mannem Adinarayana, Kumar Siddhant, Moulali Vaddamanu, Arruri Sathyanarayana, Aravind Kumar Rengan, Kyohei Hisano, Osamu Tsutsumi, Ganesan Prabusankar, J. Heterocyclic Chem., 59, 1079–1085 (2022)

2021

• Neutral Mechanical Plane Shifting in Bending Elastomer Film Revealed by Quantification of Internal Strain, Masayuki Kishino, Norihisa Akamatsu, Ryo Taguchi, Kyohei Hisano, Kohei Kuwahara, Osamu Tsutsumi, Jun Takeya, Atsushi Shishido, Adv. Eng. Mater., 2101041 (2021)
• Aggregation-Enhanced Room-Temperature Phosphorescence from Au(I) Complexes Bearing Mesogenic Biphenylethynyl Ligands, Andriani Furoida, Misato Daitani, Kyohei Hisano, Osamu Tsutsumi, Molecules, 26, 7255 (2021)
• Negative Thermal Quenching of Photoluminescence from Liquid-Crystalline Molecules in Condensed Phase, Hussain Sami, Osama Younis, Yui Maruoka, Kenta Yamaguchi, Kumar Siddhant, Kyohei Hisano, Osamu Tsutsumi, Crystals, 11, 1555 (2021)
• Effect of Crosslinkers on Optical and Mechanical Behavior of Chiral Nematic Liquid Crystal Elastomers, Kyosun Ku, Kyohei Hisano, Kyoko Yuasa, Tomoki Shigeyama, Norihisa Akamatsu, Atsushi Shishido, Osamu Tsutsumi, Molecules, 26, 6193 (2021)
• Aggregation-enhanced direct S0–Tn transitions and room-temperature phosphorescence in gold(I)-complex single crystals, Akihiro Ando, Kazuhisa Ozaki, Urara Shiina, Eikichi Nagao, Kyohei Hisano, Kenji Kamada, Osamu Tsutsumi, Aggregate, e125 (2021)
• A Gold(I) 1,2,3–Triazolylidene Complex Featuring the Interaction Between Gold and Methine Hydrogen, Mannem Adi Narayana, Moulali Vaddamanu, Arruri Sathyanarayana, Kumar Siddhant, Shohei Sugiyama, Ozaki Kazuhisa, Aravind Kumar Rengan, Kavitha Velappan, Kyohei Hisano, Osamu Tsutsumi, Ganesan Prabusankar, Dalton Trans., 50, 16514–16518 (2021)
• Acridine N-Heterocyclic Carbene Gold(I) Compounds: Tuning from Yellow to Blue Luminescence, Moulali Vaddamanu, Arruri Sathyanarayana, Yamane Masaya, Shohei Sugiyama, Ozaki Kazuhisa, Kavitha Velappan, Muneshwar Nandeshwar, Kyohei Hisano, Osamu Tsutsumi, Ganesan Prabusankar, Chem. Asian J., 16, 521–529 (2021)
• Single-component white-color photoluminescence from liquid crystal polymers: color tuning by a combination of luminescence thermo- and mechanochromism, Osama Younis, Osamu Tsutsumi, Dyes and Pigments, 188, 109189 (2021)
• Wideband reflection wavelength tuning by bending of cholesteric liquid crystal elastomer films, Masayuki Kishino, Norihisa Akamatsu, Ryo Taguchi, Shoichi Kubo, Kyohei Hisano, Osamu Tsutsumi, Atsushi Shishido, J. Appl. Phys., 129, 164701 (2021)
• Environmentally Stable Chiral-Nematic Liquid-Crystal Elastomers with Mechano-Optical Properties, Kyosun Ku, Kyohei Hisano, Seiya Kimura, Tomoki Shigeyama, Norihisa Akamatsu, Atsushi Shishido, Osamu Tsutsumi, Appl. Sci., 11, 5037 (2021)
• Mechano-optical Sensors Fabricated with Multilayered Liquid Crystal Elastomers Exhibiting Tunable Deformation Recovery, Kyohei Hisano, Seiya Kimura, Kyosun Ku, Tomoki Shigeyama, Norihisa Akamatsu, Atsushi Shishido, Osamu Tsutsumi, Adv. Funct. Mater., 31, 2104702 (2021)
• Fascinating Phenomena towards Single-Component White-Light Emission through Luminescent Thermochromism, Osama Younis, Hussain Sami, Yui Maruoka, Kyohei Hisano, Osamu Tsutsumi, Dyes and Pigments, 194, 109621 (2021)
• Liquid crystal polymers as luminescent coatings: Single-component white-light photoluminescence and corrosion inhibition, Osama Younis, Mohamed Abdel-Hakim, Marwa M. Sayed, Osamu Tsutsumi, Kamal I. Aly, J. Lumin., 239, 118361 (2021)

2020

• Observation of crystallisation dynamics by crystal-structure-sensitive room-temperature phosphorescence from Au(I) complexes, Yuki Kuroda, Masakazu Tamaru, Hitoya Nakasato, Kyosuke Nakamura, Manami Nakata, Kyohei Hisano, Kaori Fujisawa, Osamu Tsutsumi, Commun. Chem., 3, 139 (2020)
• Synthesis of Novel Biocompatible Thienopyrimidine Chromophores with Aggregation-Induced Emission Sensitive to Molecular Aggregation, Mostafa Ahmed, Osama Younis, Esam A Orabi, Ahmed M Sayed, Adel M Kamal El-Dean, Reda Hassanien, Rebecca L Davis, Osamu Tsutsumi, Mahmoud S Tolba, ACS Omega, 5, 29988−30000 (2020)
• Stimuli-Sensitive Aggregation-Induced Emission of Organogelators Containing Mesogenic Au(I) Complexes, Supattra Panthai, Ryota Fukuhara, Kyohei Hisano, Osamu Tsutsumi, Crystals, 10, 388 (2020)
• Aggregation-induced emission with white, green, or blue luminescence from biologically-active indole derivatives, Osama Younis, Esam A Orabi, Adel M Kamal, Mostafa Sayed, Reda Hassanien, Rebecca L Davis, Osamu Tsutsumi, Mostafa Ahmed, Opt. Mater., 100, 109713 (2020)
• A Rare Intramolecular Au···H-C(sp3) Interaction in Gold(I)-N-Heterocyclic Carbene, Moulali Vaddamanu, Arruri Sathyanarayana, Masaya Yamane, Shohei Sugiyama, Kazuhisa Ozaki, Kavitha Velappan, Kalaivanan Subramaniyam, Kyohei Hisano, Osamu Tsutsumi, Ganesan Prabusankar, Organometallics, 39, 2202–2206 (2020)
• Biologically-Active Heterocyclic Molecules with Aggregation-Induced Blue-Shifted Emission and Efficient Luminescence both in Solution and Solid States, Osama Younis, Mahmoud S. Tolba, Esam A. Orabi, Adel M. Kamal, Reda Hassanien, Osamu Tsutsumi, Mostafa Ahmed, J. Photochem. Photobiol. A: Chem., 400, 112642 (2020)
• Out-of-plane Strain Measurement of a Silicone Elastomer by means of A Cholesteric Liquid Crystal Sensor, M. Kishino, N. Akamatsu, R. Taguchi, K. Hisano, O. Tsutsumi, A. Shishido, J. Photopolym. Sci. Technol., 33, 81–84 (2020)
• Luminescent coatings: White-color luminescence from a simple and single chromophore with high anticorrosion efficiency, Osama Younis, Emad E El-Katori, Reda Hassanien, Ashraf S Abousalem, Osamu Tsutsumi, Dyes and Pigments, 175, 108146 (2020)

2019

• Conducting Copolymers Nanocomposite Coatings with Aggregation-Controlled Luminescence and Efficient Corrosion Inhibition Properties, Kamal I. Aly, Osama Younis, Mahmoud H. Mahross, Esam A. Orabi, Mohamed Abdel-Hakim, Osamu Tsutsumi, Mohamed Gamal Mohamed, Marwa M. Sayed, Prog. Org. Coat., 135, 525–535 (2019)
• Design and Synthesis of Novel Indole Derivatives with Aggregation-Induced Emission and Antimicrobial Activity, Mostafa Sayed, Osama Younis, Reda Hassanien, Mostafa Ahmed, Ahmed AK Mohammed, Adel M Kamal, Osamu Tsutsumi, J. Photochem. Photobiol. A: Chem., 383, 111969 (2019)
• Highly Efficient Aggregation-Induced Room-Temperature Phosphorescence with Extremely Large Stokes Shift Emitted from Trinuclear Gold(I) Complex Crystals, Osamu Tsutsumi, Masakazu Tamaru, Hitoya Nakasato, Shingo Shimai, Supattra Panthai, Yuki Kuroda, Kenta Yamaguchi, Kaori Fujisawa, Kyohei Hisano, Molecules, 24, 4606 (2019)
• Novel Conducting Polymeric Nanocomposites Embedded with Nanoclay: Synthesis, Photoluminescence, and Corrosion Protection Performance, Kamal I. Aly, Osama Younis, Mahmoud H. Mahross, Osamu Tsutsumi, Mohamed Gamal Mohamed, Marwa M. Sayed, Polym. J., 51, 77–90 (2019)
• Kinetically and Thermodynamically Controlled Nanostructures of Perylene-Substituted Lophine Derivatives, Ryosuke Usui, Mitsuaki Yamauchi, Yukihide Ishibashi, Osamu Tsutsumi, Tsuyoshi Asahi, Sadahiro Masuo, Naoto Tamai, Yoichi Kobayashi, J. Phys. Chem. C, 123, 10145–10152 (2019)
• Flexible Multifunctional Sensors for Wearable and Robotic Applications, Mengying Xie, Kyohei Hisano, Mingzhu Zhu, Takuya Toyoshi, Min Pan, Shima Okada, Osamu Tsutsumi, Sadao Kawamura, Chris Bowen, Adv. Mater. Technol., 4, 1800626 (2019)
• Blue-Emitting Acridine-Tagged Silver(I)-bis-N-heterocyclic Carbene, Prabusankar Ganesan, Nirmala Muthukumaran, Moulali Vaddamanu, Raju Gembali, Kavitha Velappan, Sathyanarayana Arruri, Yamane Masaya, Shohei Sugiyama, Kyohei Hisano, Osamu Tsutsumi, RSC Adv., 9, 7543–7550 (2019)
• Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence,Yuki Kuroda, Shin-ya Nakamura, Katam Srinivas, Arruri Sathyanarayana, Ganesan Prabusankar, Kyohei Hisano, Osamu Tsutsumi, Crystals, 9, 227 (2019)
• Luminescent Zinc(II) Selone Macrocyclic Ring,Gembali Raju, Moulali Vaddamanu, Mannarsamy Maruthupandi, Nirmala Muthukumaran, Shin-ya Nakamura, Yamane Masaya, Kyohei Hisano, Osamu Tsutsumi, Chinmoy Biswas, Sai Santosh Kumar Raavi, Ganesan Prabusankar, RSC Adv., 9, 14841–14848 (2019)

2018

• Photoluminescence Behavior of Liquid-Crystalline Gold(I) Complexes with Siloxane Group Controlled by Molecular Aggregated Structures in Condensed Phases, Kaori Fujisawa, Fumika Mitsuhashi, Anukul Preeyanuch, Kensuke Taneki, Osama Younis, Osamu Tsutsumi, Polym. J., 50, 761–769 (2018)
• Controlling the Solid-State Luminescence of Gold(I) N-Heterocyclic Carbene Complexes through Changes in the Structure of Molecular Aggregates, Arruri Sathyanarayana, Shin-ya Nakamura, Kyohei Hisano, Osamu Tsutsumi, Katam Srinivas, Ganesan Prabusankar, Sci. China Chem., 61, 957–965 (2018)
• Color tuning donor–acceptor-type azobenzene dyes by controlling the molecular geometry of the donor moiety, Shigeyuki Yamada, Junko Bessho, Hitoya Nakasato, Osamu Tsutsumi, Dyes and Pigments, 150, 89–96 (2018)
• Effects of Aromatic Core and Flexible Terminal Chain Structures on the Properties of Luminous Liquid-Crystalline Gold(I) Complexes for Functional Materials, Anukul Preyanuch, Nana Sugimoto, Kaho Sakamoto, Yuki Rokusha, Kensuke Taneki, Kaori Fujisawa, Osamu Tsutsumi, Mol. Cryst. Liq. Cryst., 662, 176–187 (2018)

2017

• Mesogenic Gold Complexes Showing Aggregation-Induced Enhancement of Phosphorescence in Both Crystalline and Liquid-Crystalline Phases, Shigeyuki Yamada, Yuki Rokusha, Ryo Kawano, Kaori Fujisawa, Osamu Tsutsumi, Faraday Discuss., 196, 269–283 (2017)
• Electron-density distribution tuning for enhanced thermal stability of luminescent gold complexes, Shigeyuki Yamada, Shun Yamaguchi, and Osamu Tsutsumi, J. Mater. Chem. C, 5, 7977–7984 (2017)

2016

• Photoluminescence from Au(I) Complexes Exhibiting Color Sensitivity to the Structure of the Molecular Aggregates, Ryo Kawano, Osama Younis, Akihiro Ando, Yuki Rokusha, Shigeyuki Yamada, Osamu Tsutsumi, Chem. Lett., 45, 66–68 (2016) (Editer's choice)

2015

• Effects of molecular structure and aggregated structure on photoluminescence properties of liquid-crystalline gold(I) complexes with various aromatic rings, Osama Younis, Yuki Rokusha, Nana Sugimoto, Kaori Fujisawa, Shigeyuki Yamada, Osamu Tsutsumi, Mol. Cryst. Liq. Cryst., 617, 21–31 (2015).
• Hierarchical Self-Assembly of Oxomolybdate Monomers into a Stable Polyoxomolybdate Crystal with an Ordered Nanochannel Array, Ryohei Watanabe, Kenjiro Uno, Makoto Muto, Shigeyuki Yamada, Osamu Tsutsumi, Mol. Cryst. Liq. Cryst., 617, 32–39 (2015).
• Tuning the photoluminescence of condensed-phase cyclic trinuclear Au(I) complexes through control of their aggregated structures by external stimuli, Kaori Fujisawa, Shigeyuki Yamada, Yukihiro Yanagi, Yasunori Yoshioka, Ayumi Kiyohara, Osamu Tsutsumi, Sci. Rep., 5, 7934 (2015)

2014

• Photoluminescent Gold(I) Complex with Biphenyl Acetylene Ligand Showing Stable Nematic Liquid-Crystalline Phase, Nana Sugimoto, Sho Tamai, Kaori Fujisawa, Osamu Tsutsumi, Mol. Cryst. Liq. Cryst., 601, 97–106 (2014).
• Reversible thermal-mode control of luminescence from liquid-crystalline gold(I) complexes. , Kaori Fujisawa, Yuki Okuda, Yuichi Izumi, Akira Nagamatsu, Yuki Rokusha, Yusuke Sadaike, Osamu Tsutsumi, J. Mater. Chem. C, 2, 3549–3555 (2014)

2013

• Morphological Control of Gold Nanoparticle Aggregates via Photoisomerization of Azobenzene Liquid Crystals., Kaori Fujisawa, Asuna Kuranari, Koji Ota, Osamu Tsutsumi. , Mol. Cryst. Liq. Cryst., 583, 21–28 (2013).
• Photoluminescent Properties of Liquid Crystalline Gold(I) Isocyanide Complexes with a Rod-Like Molecular Structure., Kaori Fujisawa, Naoya Kawakami, Yusuke Onishi, Yuichi Izumi, Sho Tamai, Nana Sugimoto, Osamu Tsutsumi, J. Mater. Chem. C, 1, 5359–5366 (2013)

2012

• Crystal Structure and Phase Transition Behavior of Dioctadecyldimethylammonium Chloride., Kenjiro Uno, Osamu Tsutsumi. , Mol. Cryst. Liq. Cryst., 563, 58-66 (2012).
• Liquid-Crystalline Behavior and Photoluminescence Properties of Gold(I) Complexes with Isocyanide Ligand: Relationship between Aggregation Structure and Properties., Kaori Fujisawa, Yuichi Izumi, Akira Nagamatsu, Kenjiro Uno, Osamu Tsutsumi, Mol. Cryst. Liq. Cryst., 563, 50-57 (2012).

2011

• Self-Organization of Gold Nanoparticles Coated with a Monolayer of Azobenzene Liquid Crystals., Osamu Tsutsumi, Keitarou Yamamoto, Koji Ohta, Kaori Fujisawa, Kenjiro Uno, Takeshi Hashishin, Chihiro Yogi, Kazuo Kojima. , Mol. Cryst. Liq. Cryst., 550, 105-111 (2011).

2008

• Stimulus–Responsive Molecular Rotors: Control of Rotary Motion in Triptycene–Ionophore Systems with s-Block Metal Cations., Osamu Tsutsumi, Fumiko Suzuki, Mai Oowaki, Yoshie Okazaki, Kazuyoshi Takeda, Yasuhiro Mazaki, Gaku Yamamoto., Thin Solid Films, 517, 1428-1433 (2008).
• Synthesis, Photoisomerization Behavior and Liquid-Crystalline Properties of Azobenzenes Attached on the Surface of Gold Nanoparticles., Osamu Tsutsumi, Keitarou Yamamoto, Yohei Yamamoto, Takeshi Hashishin, Hirokazu Sato., Proc. SPIE, 7050, 70500D (2008).

2006

• Synthesis and Photochemical Behavior of Metalloporphyrin Complexes Containing a Photochromic Axial Ligand., Osamu Tsutsumi, Hirokazu Sato, Kazuyoshi Takeda, Takuji Ogawa., Thin Solid Films, 499, 219-223 (2006).
• Simple Preparation Method for Supramolecular Porphyrin Arrays on Mica Using Air–Water Interface, Hirokazu Sato, Osamu Tsutsumi, Kazuyoshi Takeda, Hirofumi Tanaka, Takuji Ogawa. , Jpn. J. Appl. Phys., 45, 2324-2327 (2006).
• Azotolane Liquid–Crystalline Polymers: Huge Change in Birefringence by Photoinduced Alignment Change., Kunihiko Okano, Osamu Tsutsumi, Atsushi Shishido, Tomiki Ikeda., J. Am. Chem. Soc., 128,15368-15369 (2006).
• One– and Two–Photon Induced Phase Transition Behavior of Nematic Liquid Crystals Containing Bis-Styryl Benzene as a Photoresponsive Chromophore., Osamu Tsutsumi, Asami Ohashi, Tomiki Ikeda, Seth R. Marder, Joseph W. Perry., Thin Solid Films, 509, 118-122 (2006).

2005

• Highly Birefringent Liquid-Crystalline Polymers for Photonic Applications: Synthesis of Liquid-Crystalline Polymers with Side-Chain Azo-Tolane Mesogens and Their Holographic Properties., Kunihiko Okano, Atsushi Shishido, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda., J. Mater. Chem., 15, 3395-3401 (2005).
• Photoinduced Change in Birefringence and Optical Switching at Near-Infrared Region Based on Photochemical Phase Transition of Azobenzene Liquid Crystals., Hideo Kurihara, Atsushi Shishido, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 441, 173-184 (2005).
• Effect of Intensity of Actinic Light and Temperature on Photochemical Phase Transition of Azobenzene Liquid Crystals Probed by a Near-Infrared Laser Beam., Hideo Kurihara, Atsushi Shishido, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 443, 229-238 (2005).

2004

• Metal-Ion Sensing Fluorophores with Large Two-Photon Absorption Cross Sections: Aza-Crown Ether Substituted Donor-Acceptor-Donor Distyrylbenzenes., Stephanie J. K. Pond, Osamu Tsutsumi, Mariacristina Rumi, Ohyun Kwon, Egbert Zojer, Jean-Luc Brédas, Seth R. Marder, Joseph W. Perry., J. Am. Chem. Soc., 126, 9291-9306 (2004).
• Optically Switchable Bragg Reflectors., Augustine Urbas, Jay Klosterman, Vincent Tondiglia, Lalgudi Natarajan, Richard Sutherland, Osamu Tsutsumi, Tomiki Ikeda, Timothy Bunning., Adv. Mater., 16, 1453-1456 (2004).
• Synthesis and Investigation of Photophysical and Photochemical Properties of New Side-Group Liquid Crystalline Polymers Containing Coumarin Moieties., Yanqing Tian, Eiichi Akiyama, Yu Nagase, Akihiko Kanazawa, Osamu Tsutsumi, Tomiki Ikeda., J. Mater. Chem., 14, 3524-3531 (2004).
• Highly Efficient Formation of Holographic Gratings in Polymer Liquid Crystals., Kunihiko Okano, Atsushi Shishido, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda., Proc. SPIE, 5213, 139 (2004).

2003

• Anisotropic Bending and Unbending Behavior of Azobenzene Liquid-Crystalline Gels by Light Exposure, Tomiki Ikeda, Makoto Nakano, Yanlei Yu, Osamu Tsutsumi, Akihiko Kanazawa., Adv. Mater., 15, 201-205 (2003).
• Side-Chain Polymer Liquid Crystals Containing Oxadiazole and Amine Moieties with Carrier-Transporting Abilities for Single-Layer Light-Emitting Diodes., Masuki Kawamoto, Hiroyuki Mochizuki, Atsushi Shishido, Osamu Tsutsumi, Tomiki Ikeda, Bong Lee, Yasuhiko Shirota., J. Phys. Chem. B, 107, 4887-4893 (2003).
• Photoresponsive Behavior of Azobenzene Liquid-Crystalline Gels., Makoto Nakano, Yanlei Yu, Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 398, 1-9 (2003).
• Highly Efficient Holographic Materials Based on Polymer Liquid Crystals., Kunihiko Okano, Atsushi Shishido, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda., J. Nonlinear Opt. Phys. Mater., 12, 539-546 (2003).

2002

• Dynamics of Photochemical Phase Transition of Guest/Host Liquid Crystals with an Azobenzene Derivative as a Photoresponsive Chromophore., Jeong-Hee Sung, Shigenobu Hirano, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Chem. Mater., 14, 385-391 (2002).
• High-Performance Material for Holographic Gratings by Means of a Photoresponsive Polymer Liquid Crystal Containing a Tolane Moiety with High Birefringence., Satoshi Yoneyama, Takahiro Yamamoto, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono Tomiki Ikeda. , Macromolecules, 35, 8751-8758 (2002).
• Photochemical Modulation of Alignment of Liquid Crystals and Photonic Applications., Osamu Tsutsumi, Tomiki Ikeda., Curr. Opin. Solid State Mat. Sci., 6, 563-568 (2002).
• X-ray Measurements of an Oligothiophene Containing Acetylene Linkage., Haichao Zhang, Shigeaki Shiino, Akihiko Kanazawa, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda, Yu Nagase., Synth. Met., 126, 11-18 (2002).
• Photoinduced Reorientation and Thermal Effects in an Oligothiophene-Doped Liquid Crystal System., Haichao Zhang, Shigeaki Shiino, Akihiko Kanazawa, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda., J. Appl. Phys., 91, 5558-5563 (2002).
• Polymer azobenzene liquid crystal films with nano-second photoresponse., Kanato Adachi, Atsushi Shishido, Osamu Tsutsumi, Tomiki Ikeda., Kobunshi Ronbunshu, 59, 767-771 (2002).

2001

• Phase-Type Gratings Formed by Photochemical Phase Transition of Polymer Azobenzene Liquid Crystals: 2. Rapid Switching of Diffraction Beams in Thin Films., Takahiro Yamamoto, Asami Ohashi, Satoshi Yoneyama, Makoto Hasegawa, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., J. Phys. Chem. B, 105, 2308-2313 (2001).
• Optical Switching and Optical Storage Using a Photochromic Ferroelectric Liquid Crystal., Lachezar Komitov, Osamu Tsutsumi, Christian Ruslim, Tomiki Ikeda, Kunihiro Ichimura, Katsumi Yoshino., J. Appl. Phys., 89, 7745-7749 (2001).
• Formation of Intensity Grating in a Polymer Liquid Crystal with a Side-Chain Azobenzene Moiety by Photoinduced Alignment Change of Mesogens, Satoshi Yoneyama, Takahiro Yamamoto, Makoto Hasegawa, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., J. Mater. Chem., 11, 3008-3013 (2001).
• Distinct Thermodynamic Behavior of a Mesomorphic Gold Nanoparticle Covered with a Liquid-Crystalline Compound., Naoki Kanayama, Osamu Tsutsumi, Akihiko Kanazawa, Tomiki Ikeda., Chem. Commun., 2640-2641 (2001).
• Rapid Photochemical Control of Phase Structure of Polymer Liquid Crystals with Hydroxyazobenzene as a Photosensitive Chromophore., Osamu Tsutsumi, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 368, 411-422 (2001).
• Photoinduced Reorientation of Liquid Crystals Doped with a Mesogenic Oligothiophene., Haichao Zhang, Shigeaki Shiino, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 368, 369-376 (2001).
• Electroluminescent Behavior of Oxadiazole Derivatives in Liquid-Crystalline Media., Hirotaka Mochizuki, T. Hasui, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda, Chihaya Adachi, Y. Taniguchi, Y. Shirota., Mol. Cryst. Liq. Cryst., 365, 129-138 (2001).
• Formation of Grating by Means of Photoinduced Alignment Change of Polymer Liquid Crystals with Azobenzene Moieties., Satoshi Yoneyama, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 368, 335-343 (2001).

2000

• Photochemical Modulation of Color and Transmittance in Chiral Nematic Liquid Crystal Containing an Azobenzene as a Photosensitive Chromophore., Hyoung-Kwan Lee, Keina Doi, Hisako Harada, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., J. Phys. Chem. B, 104, 7023-7028 (2000).
• A Thiophene Liquid Crystal as a Novel -Conjugated Dye for Photo-Manipulation of Molecular Alignment., Haichao Zhang, Shigeaki Shiino, Atsushi Shishido, Akihiko Kanazawa, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda., Adv. Mater., 12, 1336-1339 (2000).
• Photoinduced Alignment of Polymer Liquid Crystals Containing Azobenzene Moieties in the Side Chain. 7. On Irradiation by a He-Ne Laser Beam., Yiliang Wu, Jun-ichi Mamiya, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Liq. Cryst., 27, 749-753 (2000).
• Holographic Grating in the Optically Isotropic State of Polymer Azobenzene Liquid-Crystal Films., Takahiro Yamamoto, Satoshi Yoneyama, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., J. Appl. Phys., 88, 2215-2220 (2000).
• Optical Switching and Image Storage by Means of Photochromic Liquid Crystals., Tomiki Ikeda, Osamu Tsutsumi, Yiliang Wu., Mol. Cryst. Liq. Cryst., 347, 1-13 (2000).
• Liquid Crystalline Coumarin Polymers. I: Synthesis and Properties of Side-Group Liquid Crystalline Polymers with Coumarin Moieties., Yanqing Tian, Eiichi Akiyama, Yu Nagase, Akihiko Kanazawa, Osamu Tsutsumi, Tomiki Ikeda., Macromol. Chem. Phys., 201, 1640-1652 (2000).
• Liquid Crystalline Coumarin Polymers. II: Photochemistry of Side-Group Liquid Crystalline Polymers with Coumarin Moieties., Yanqing Tian, Eiichi Akiyama, Yu Nagase, Akihiko Kanazawa, Osamu Tsutsumi, Tomiki Ikeda., Trans. Mater. Res. Soc. Jpn., 25, 1091-1094 (2000).
• Photoinduced Alignment Behavior of Polymer Liquid Crystals Containing Azobenzene Moieties in the Side Chain., Osamu Tsutsumi, Yiliang Wu, Jun-ichi Mamiya, Tomiki Ikeda., Proc. SPIE, 4107, 1-8 (2000).

1999

• Photoinduced Phase Transition of Nematic Liquid Crystals with Donor-Acceptor Azobenzenes: Mechanism of the Thermal Recovery of the Nematic Phase., Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda, Lee-Soon Park., Phys. Chem. Chem. Phys., 1, 4219-4224 (1999).

1998

• Photoinduced Alignment of Polymer Liquid Crystals Containing Azobenzene Moieties in the Side Chain. 1. The Effect of Light Intensity on Alignment Behavior., Yiliang Wu, Yasuyuki Demachi, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Macromolecules, 31, 349-354 (1998).
• Photochemical Phase Transition Behavior of Polymer Azobenzene Liquid Crystals with Electron-Donating and Accepting Substituents at 4,4’-Positions., Osamu Tsutsumi, Takashi Kitsunai, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Macromolecules, 31, 355-359 (1998).
• Photoinduced Alignment of Polymer Liquid Crystals Containing Azobenzene Moieties in the Side Chain. 2. The Effect of Spacer Length of Azobenzene Unit on Alignment Behavior., Yiliang Wu, Yasuyuki Demachi, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Macromolecules, 31, 1104-1108 (1998).
• Photochemical Phase Transition Behavior of Polymer Liquid Crystals Induced by Photochemical Reaction of Azobenzenes with Strong Donor-Acceptor Pairs., Osamu Tsutsumi, Yasuyuki Demachi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda, Yu Nagase., J. Phys Chem. B., 102, 2869-2874 (1998).
• Photoinduced Alignment of Polymer Liquid Crystals Containing Azobenzene Moieties in the Side Chain. 3. The Effect of Structure of Photochromic Moieties on Alignment Behavior., Yiliang Wu, Yasuyuki Demachi, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Macromolecules, 31, 4457-4463 (1998).
• Photochemical Phase Transition Behavior of Polymer Azobenzene Liquid Crystals with a Rigid Core Introduced at a Different Position in a Flexible Side Chain., Osamu Tsutsumi, Yasuo Miyashita, Shigenobu Hirano, Atsushi Shishido, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 312, 33-44 (1998).
• Reflection-Mode Optical Switching of Polymer Azobenzene Liquid Crystal., Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Mol. Cryst. Liq. Cryst., 318, 59-70 (1998).

1997

• Photochemical Phase Transition Behavior of Nematic Liquid Crystals with Azobenzene Moieties as Both Mesogens and Photosensitive Chromophores., Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda, Giancarlo Galli., J. Phys. Chem. B, 101, 1332-1337 (1997).
• Distinct Photochemical Phase Transition Behavior of Azobenzene Liquid Crystals Evaluated by Reflection-Mode Analysis., Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda, Naoto Tamai., J. Phys. Chem. B, 101, 2806-2810 (1997).
• Novel Thermotropic Liquid Crystals without a Rigid Core Formed by Amphiphiles Having Phosphonium Ions., Akihiko Kanazawa, Osamu Tsutsumi, Tomiki Ikeda, Yu Nagase., J. Am. Chem. Soc., 119, 7670-7675 (1997).
• Rapid Optical Switching by Means of Photoinduced Change in Refractive Index of Azobenzene Liquid Crystals Detected by Reflection-Mode Analysis., Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda, Naoto Tamai., J. Am. Chem. Soc., 119, 7791-7796 (1997).
• Photochemical Phase Transition Behavior of Polymer Azobenzene Liquid Crystals with Flexible Siloxane Unit as a Side-Chain Spacer., Akihiko Kanazawa, Shigenobu Hirano, Atsushi Shishido, Makoto Hasegawa, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda, Yu Nagase, Eiichi Akiyama, Yuriko Takamura., Liq. Cryst., 23, 293-298 (1997).
• Effect of Siloxane Spacer on Photochemical Phase Transition Behavior of Polymer Liquid Crystals with Azobenzene Moieties in the Side Chain., Akihiko Kanazawa, Atsushi Shishido, Makoto Hasegawa, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda, Yu Nagase, Eiichi Akiyama, Yuriko Takamura., Mol. Cryst. Liq. Cryst., 300, 201-218 (1997).
• Charge-Transfer Interaction in Liquid-Crystalline Materials and Their Application to Photonics., Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda., Macromol. Symp., 116, 117-126 (1997).

1996

• Photochemical Switching of Ferroelectric Liquid Crystals Using a Photoswitchable Chiral Dopant., Makoto Negishi, Osamu Tsutsumi, Tomiki Ikeda, Tamejiro Hiyama, Joji Kawamura, Masao Aizawa, Sadao Takehara., Chem. Lett., 25, 319-320 (1996).
• Liquid Crystal Photonics: Optical Switching and Image Storage by Means of Nematic Liquid Crystals and Ferroelectric Liquid Crystals., Tomiki Ikeda, Osamu Tsutsumi, Takeo Sasaki., Synth. Met., 81, 289-296 (1996).

1995

• Optical Switching and Image Storage by Means of Azobenzene Liquid-Crystal Films., Tomiki Ikeda, Osamu Tsutsumi., Science, 268, 1873-1875 (1995).