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-->   Toshikazu Ono Last modified date：2024.05.14 Associate Professor / Ｃｈｅｍｉｓｔｒｙ　ａｎｄ　Ｂｉｏｃｈｅｍｉｓｔｒｙ　Ｃｏｕｒｓｅ Department of Applied Chemistry Faculty of Engineering 1 Research Interests 2 Academic Activities 2.1 Papers 2.2 Reports 2.3 Presentations 3 Membership in Academic Society Graduate School Department of Chemistry and Biochemistry Graduate School of Engineering Undergraduate School Department of Materials Science and Engineering School of Engineering E-Mail　*Since the e-mail address is not displayed in Internet Explorer, please use another web browser:Google Chrome, safari. Homepage https://kyushu-u.elsevierpure.com/en/persons/toshikazu-ono　Reseacher Profiling Tool　Kyushu University Pure https://sites.google.com/view/toshikazu-ono-hp http://www.chem.kyushu-u.ac.jp/~hisaeda/久枝研究室 . Phone 092-802-2830 Fax 092-802-2830 Academic Degree Ph.D Country of degree conferring institution (Overseas) No Field of Specialization Polymer Chemistry, Supramolecular Chemistry, Coordination Chemistry, Photochemistry，　Ｃｒｙｓｔａｌ　Ｅｎｇｉｎｅｅｒｉｎｇ ORCID(Open Researcher and Contributor ID) https://orcid.org/0000-0001-5427-8540 Total Priod of education and research career in the foreign country 01years09months Research Research Interests Preparation of circularly polarized emissive materials using hinge moleculeskeyword : circularly polarized luminescence2021.04. Development of helical metal complexes for circular polarized luminescent materialskeyword : circular polarized luminescence, helical metal complexes2016.04. Development of salt-cocrystal continuum for photofunction materialskeyword : salt-cocrystal continuum 2017.04. Preparation of organic solid-state emissive materials based on multicomponent reactionskeyword : Multicomponent reactions2017.04. Construction of Innovative Light Conversion Materials by Porous Organic Crystalskeyword : fluorescence, phosphorescence, emission lifetime, organic inclusion crystals2014.10. Synthesis and characterization of novel porphycene derivativeskeyword : porphycene, solid-state emission, solid-state catalyst2015.04. Development of functional soft matters based on dameged baseskeyword : chemical biology, DNA repair, hydro gel2013.04～2016.03. Development of novel radical transfer catalysis based on hydrophobic Vitamin B12.keyword : organometallic chemistry, catalytic chemistry, photochemistry2013.04～2020.09. Supramolecular Composite Materials based on π-conjugated Moleculeskeyword : supramolecular chemistry, πconjugated molecules, lewis pair, inclusion crystals, solid state emissions2012.08. Preparation of Protein-polymer Conjugates using apoprotein-Heme Supramolecular Interactions. keyword : polymer chemistry, supramolecular chemistry, bioinorganic chemistry, hemoprotein, bionanomaterial2010.04～2012.08. Direct Fluorescence Monitoring of DNA Base Excision Repairskeyword : chemical biology, DNA repair, fluorescence probe2010.04～2011.12. Preparation of Thickening Agents for Organic Solvents using Associative Polyelectrolyeskeyword : polymer chemistry, supramolecular chemistry, thickener2008.04～2010.03. Lipophilic Polyelectrolyte Gels as Super Absorbent Polymers for Organic Solventskeyword : polymer chemistry, supramolecular chemistry, supar absorbent polymers, polymer gels2005.04～2010.03. Academic Activities Reports  Show All Reports >> Papers  Show All Papers >> 1. Luxia Cui, Ami Horioka, Ryoichi Ishimatsu, Masashi Mamada, Chihaya Adachi, Keishiro Tahara, Yu Hoshino, Toshikazu Ono, Advanced Molecular Design for Efficient Multicolor Electrochemiluminescence and Amplified Spontaneous Emission Based on Tetra‐BF2 Complexes, Advanced Optical Materials, 10.1002/adom.202302803, 2024.01, AbstractAdvanced organoboron dyes, incorporating tetra‐boron difluoride (tetra‐BF2) moieties, are developed, demonstrating efficient electrochemiluminescence (ECL) emissions in the green to orange regions through direct ion annihilation. By introducing diverse alkyl modifications in the molecules, luminescence color tuning is achieved via alterations in conjugation and bending angle. A photoluminescence quantum yield of 100% in dilute solutions is successfully achieved. Notably, the introduction of alkyl groups to the methine side stabilizes the radical ionic state, resulting in a high ECL efficiency of 74% through an efficient radical‐ion annihilation pathway. The key factor is that the energy of the annihilation reaction exceeds the S1 energy required for luminescence. Spin density calculations further elucidate the substituent effects on the radical ions of complexes. Moreover, the lasing properties of these materials in the solution‐processed blend films are investigated, revealing a low amplified spontaneous emission (ASE) threshold (Eth) of 6.40 ± 0.24 µJ cm−2, which is notably lower among organic laser materials. This is attributed to their large Stokes shifts and high quantum yield. The excellent ECL and ASE performances establish these materials as a valuable addition to the existing library of organoboron dyes, offering fresh insights into the development of organic solid‐state lasers.. 2. Yoshio Yano, Hidetaka Kasai, Yanyan Zheng, Eiji Nishibori, Yoshio Hisaeda, Toshikazu Ono, Multicomponent Crystals with Competing Intermolecular Interactions: In Situ X-ray Diffraction and Luminescent Features Reveal Multimolecular Assembly of Mechanochemical Conditions., Angewandte Chemie (International ed. in English), 10.1002/anie.202203853, 2022.06, Supramolecular chemistry under mechanochemical conditions has drawn attention because it can induce low-solubility molecules to self-assemble, although most of the reported examples have been limited to two-component systems. We applied mechanochemical synthesis to achieve multimolecular self-assembly in more challenging three-component systems. The produced crystals showed multicolor solid-state luminescence depending on the components when exposed to UV light.  Optical outputs and X-ray diffraction studies were used to examine the self-assembling behavior in greater depth. Using synchrotron radiation, in situ X-ray diffraction permitted direct observation of the milling process, which started the self-assembly process within 1 min. This research emphasizes the importance of multicomponent molecules with optical functions and self-assembling behavior and offers the possibility of developing more complicated multicomponent crystals and organic solid solutions for advanced materials.. Presentations  Show All Presentations >> 1. Toshikazu Ono, Design of Multicomponent Crystals for Novel Photofunction Design, 日本化学会第100春季年会, 2020.03, Individual molecules have their own unique characteristics, but hidden properties can be revealed when they are hybridized with other molecules. Interest in the design,preparation, characterization, and application of co-crystals or multicomponent crystals has grown in crystal engineering and materials science. Here we report a variety of multicomponent molecular crystals that can show remarkable photoluminescence properties.. 2. Toshikazu Ono, Design of Multicomponent Molecular Crystals for Light-emitting Materials and Optical Sensors, 日本化学会第100春季年会, 2020.03, In this presentation, we would like to introduce our recent research on light-emitting materials and optical sensors using multicomponent molecular crystals. The methodology involved designing an appropriate π-conjugated dye molecule (electron-accepting or electron-donating compounds) and various co-formers, and comprehensively prepare inclusion crystals, co-crystals, solvates, and organic salts. The design strategy to prepare crystals includes molecular shape and cooperative intra- and inter-molecular interactions such as hydrogen bonds and charge–transfer interactions.. 3. Ai Taema, Toshikazu ONo, 小出 太郎, 嶌越 恒, Yoshio Hisaeda, Preparation of Organic Inclusion Crystals with Tunable Properties of Fluorescence and Phosphorescence Emission , 9th Asian Photochemistry Conference (APC2016), 2016.12. 4. Toshikazu Ono, Yoshio Hisaeda, Color-tunable Solid-state Emission of Multicomponent Crystals by Cooperative Electron Donor-Acceptor Complexation, Pacifichem 2015, 2016.12. Membership in Academic Society The Society of Physical Organic Chemistry, Japan The Society of Synthetic Organic Chemistry, Japan Japanese Photochemistry Association Japan Society of Coordination Chemistry The Society of Polymer Science, Japan The Chemical Society of Japan Unauthorized reprint of the contents of this database is prohibited. Copyright © 2006, Kyushu University. All rights reserved.