Nanoscopic Visualization of Chain-Scissoring Points in Polymer Mechanochemistry

• Project/Area Number: 18H02050
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 35030:Organic functional materials-related
• Research Institution: Rikkyo University
• Principal Investigator: MORIMOTO Masakazu 立教大学, 理学部, 教授 (70447126)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000); Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2018: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
• Keywords: メカノケミストリー / 高分子 / 力学特性 / フォトクロミズム / 蛍光 / 光スイッチ / ジアリールエテン / 超解像蛍光顕微鏡

Outline of Final Research Achievements

We aimed to create probe molecules for visualization of chain-scissoring points in polymer mechanochemistry. We have clarified the substituent effect on photostability and photoreaction quantum yields of photochromic molecules, which can be potentially used as probe molecules. We synthesized a polymer compound containing photochromic molecules and confirmed that the photochromic molecules exhibit the same photoresponsive properties in the polymer as in the case of the molecular skeleton alone, and investigated mechanochemical reactions of the polymer compound.

Academic Significance and Societal Importance of the Research Achievements

フォトクロミック分子の耐光性の向上や光反応量子収率の制御に関する知見は、光応答分子の学術的基礎として重要であるとともに、結合切断点プローブの機能設計に活用できる。また、フォトクロミック分子骨格を含む高分子化合物の合成や光応答特性、ならびに力学的刺激による化学変化の可能性について検討した結果は、将来における新たな力学機能を有する高分子化合物の設計・合成に寄与し得るものと考えている。

Research Products

• [Journal Article] Visualization of the microstructure and the position-dependent diffusion coefficient in a blended polymer solid using photo-activation localization microscopy combined with single-molecule tracking based on one-color fluorescence-switching of diarylethene (2022)
  • Author(s): Ito Syoji、Funaoka Misato、Hanasaki Itsuo、Takei Satoshi、Morimoto Masakazu、Irie Masahiro、Miyasaka Hiroshi
  • Journal Title: Polymer Chemistry Volume: 13 Issue: 6 Pages: 736-740
  • DOI: 10.1039/d1py01100f
  • Peer Reviewed
• [Journal Article] Photoinduced cytotoxicity of photochromic symmetric diarylethene derivatives: the relation of structure and cytotoxicity (2022)
  • Author(s): Yuma Nakagawa, Tatsuya Hishida, Eri Hatano, Kimio Sumaru, Kana Morishita, Masakazu Morimoto, Satoshi Yokojima, Shinichiro Nakamura, Kingo Uchida
  • Journal Title: Organic & Biomolecular Chemistry Volume: 20 Issue: 15 Pages: 3211-3217
  • DOI: 10.1039/d2ob00224h
  • Peer Reviewed
• [Journal Article] Turn-on mode fluorescent diarylethene containing neopentyl substituents that undergoes all-visible-light switching (2022)
  • Author(s): R. Nishimura, E. Fujisawa, I. Ban, R. Iwai, S. Takasu, M. Morimoto, M. Irie
  • Journal Title: Chemical Communications Volume: 58 Issue: 30 Pages: 4715-4718
  • DOI: 10.1039/d2cc00554a
  • Peer Reviewed
• [Journal Article] Fluorescence Switchable Conjugated Polymer Microdisk Arrays by Cosolvent Vapor Annealing (2021)
  • Author(s): Yamagishi Hiroshi、Matsui Tokiya、Kitayama Yusuke、Aikyo Yusuke、Tong Liang、Kuwabara Junpei、Kanbara Takaki、Morimoto Masakazu、Irie Masahiro、Yamamoto Yohei
  • Journal Title: Polymers Volume: 13 Issue: 2 Pages: 269-269
  • DOI: 10.3390/polym13020269
  • Peer Reviewed / Open Access
• [Journal Article] Photochemically switchable interconnected microcavities for all-organic optical logic gate (2021)
  • Author(s): Hendra, A. Takeuchi, H. Yamagishi, O. Oki, M. Morimoto, M. Irie, Y. Yamamoto
  • Journal Title: Advanced Functional Materials Volume: 31 Issue: 34 Pages: 2103685-2103685
  • DOI: 10.1002/adfm.202103685
  • Peer Reviewed
• [Journal Article] Photoinduced topographical surface changes and photoresponse of the crystals of 7-methoxycoumarin (2021)
  • Author(s): K. Yano, R. Nishimura, Y. Hattori, M. Morimoto, H. Sugiyama, T. Kamitanaka, S. Yokojima, S. Nakamura, K. Uchida
  • Journal Title: CrystEngComm Volume: 23 Issue: 34 Pages: 5780-5787
  • DOI: 10.1039/d1ce00444a
  • Peer Reviewed
• [Journal Article] Molecular crystalline capsules that release their contents by light (2021)
  • Author(s): A. Nagai, R. Nishimura, Y. Hattori, E. Hatano, A. Fujimoto, M. Morimoto, N. Yasuda, K. Kamada, H. Sotome, H. Miyasaka, S. Yokojima, S. Nakamura, K. Uchida
  • Journal Title: Chemical Science Volume: 12 Issue: 34 Pages: 11585-11592
  • DOI: 10.1039/d1sc03394h
  • Peer Reviewed / Open Access
• [Journal Article] Stepwise assembly of ultrathin poly(vinyl alcohol) films on photoresponsive diarylethene crystals (2021)
  • Author(s): Hiroka Chiba, Masakazu Morimoto, Masahiro Irie
  • Journal Title: Chemistry Letters Volume: 50 Issue: 1 Pages: 84-86
  • DOI: 10.1246/cl.200693
  • NAID: 130007965967
  • Peer Reviewed / Open Access
• [Journal Article] Photoinduced swing of a diarylethene thin broad sword shaped crystal: a study on the detailed mechanism (2020)
  • Author(s): Ayako Fujimoto, Noriko Fujinaga, Ryo Nishimura, Eri Hatano, Luna Kono, Akira Nagai, Akiko Sekine, Yohei Hattori, Yuko Kojima, Nobuhiro Yasuda, Masakazu Morimoto, Satoshi Yokojima, Shinichiro Nakamura, Ben L. Feringa, Kingo Uchida
  • Journal Title: Chemical Science Volume: 11 Issue: 45 Pages: 12307-12315
  • DOI: 10.1039/d0sc05388k
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Optical microresonator arrays of fluorescence-switchable diarylethenes with unreplicable spectral fingerprints (2020)
  • Author(s): Daichi Okada, Zhan-Hong Lin, Jer-Shing Huang, Osamu Oki, Masakazu Morimoto, Xuying Liu, Takeo Minari, Satoshi Ishii, Tadaaki Nagao, Masahiro Irie, Yohei Yamamoto
  • Journal Title: Materials Horizons Volume: 7 Issue: 7 Pages: 1801-1808
  • DOI: 10.1039/d0mh00566e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Turn-on mode fluorescent diarylethenes: effect of electron-donating and electron-withdrawing substituents on photoswitching performance (2020)
  • Author(s): Ryota Iwai, Masakazu Morimoto, Masahiro Irie
  • Journal Title: Photochemical & Photobiological Sciences Volume: 19 Issue: 6 Pages: 783-789
  • DOI: 10.1039/d0pp00064g
  • Peer Reviewed
• [Journal Article] Object Transportation System Mimicking the Cilia of Paramecium aurelia Making Use of the Light‐Controllable Crystal Bending Behavior of a Photochromic Diarylethene (2019)
  • Author(s): Ryo Nishimura, Ayako Fujimoto, Nobuhiro Yasuda, Masakazu Morimoto, Tatsuhiro Nagasaka, Dr. Hikaru Sotome, Dr. Syoji Ito, Hiroshi Miyasaka, Satoshi Yokojima, Shinichiro Nakamura, Ben L. Feringa, Kingo Uchida
  • Journal Title: Angewandte Chemie International Edition Volume: 58 Issue: 38 Pages: 13308-13312
  • DOI: 10.1002/anie.201907574
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An all-photonic full color RGB system based on molecular photoswitches (2019)
  • Author(s): Gaowa Naren, Chien-Wei Hsu, Shiming Li, Masakazu Morimoto, Sicheng Tang, Jordi Hernando, Gonzalo Guirado, Masahiro Irie, Francisco M. Raymo, Henrik Sunden, Joakim Andreasson
  • Journal Title: Nature Communications Volume: 10 Issue: 1
  • DOI: 10.1038/s41467-019-11885-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Thermally reversible photochromism of dipyrrolylethenes (2019)
  • Author(s): Kohei Inaba, Ryota Iwai, Masakazu Morimoto, Masahiro Irie
  • Journal Title: Photochemical & Photobiological Sciences Volume: ― Issue: 9 Pages: 2136-2141
  • DOI: 10.1039/c8pp00557e
  • Peer Reviewed
• [Journal Article] Synthesis, structures, and magnetic properties of two coordination assemblies of Mn(III) single molecule magnets bridged via photochromic diarylethene ligands (2019)
  • Author(s): Ahmed Fetoh, Goulven Cosquer, Masakazu Morimoto, Masahiro Irie, Ola El-Gammal, Gaber M. Abu El-Reash, Brian K. Breedlove, Masahiro Yamashita
  • Journal Title: Inorganic Chemistry Volume: 58 Issue: 4 Pages: 2307-2314
  • DOI: 10.1021/acs.inorgchem.8b02578
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The photoregulation of a mechanochemical polymer scission (2018)
  • Author(s): Jumpei Kida, Keiichi Imato, Raita Goseki, Daisuke Aoki, Masakazu Morimoto, Hideyuki Otsuka
  • Journal Title: Nature Communications Volume: 9 Issue: 1
  • DOI: 10.1038/s41467-018-05996-7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multiphoton-Gated Cycloreversion Reaction of a Fluorescent Diarylethene Derivative as Revealed by Transient Absorption Spectroscopy (2018)
  • Author(s): T. Nagasaka, T. Kunishi, H. Sotome, M. Koga, M. Morimoto, M. Irie, H. Miyasaka
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 20 Issue: 30 Pages: 19776-19783
  • DOI: 10.1039/c8cp01467a
  • Peer Reviewed
• [Journal Article] Mesoscopic Motion of Optically Trapped Particle Synchronized with Photochromic Reactions of Diarylethene Derivatives (2018)
  • Author(s): Syoji Ito*; Morio Mitsuishi; Kenji Setoura; Mamoru Tamura; Takuya Iida; Masakazu Morimoto; Masahiro Irie; Hiroshi Miyasaka*
  • Journal Title: Journal of Physical Chemistry Letters Volume: 9 Issue: 10 Pages: 2659-2664
  • DOI: 10.1021/acs.jpclett.8b00890
  • Peer Reviewed
• [Presentation] ジアリールエテンの光応答特性に対する反応点アルキル置換基の効果 (2021)
  • Author(s): 藤澤 衣里、伴 威風、西村 涼、森本 正和、入江 正浩
  • Organizer: 2021年光化学討論会
• [Presentation] π共役を拡張した可視光応答型ジアリールエテンの合成 (2021)
  • Author(s): 吉川 篤宏、伴 威風、西村 涼、森本 正和、入江 正浩
  • Organizer: 2021年光化学討論会
• [Presentation] Turn-on mode photoswitchable fluorescent molecules based on photochromic diarylethenes (2019)
  • Author(s): Masakazu Morimoto
  • Organizer: The 41st PhotonIcs & Electromagnetics Research Symposium
  • Int'l Joint Research / Invited
• [Presentation] Turn-on mode photoswitchable fluorescent diarylethenes: Substituent effect on photoswitching performance (2019)
  • Author(s): Masakazu Morimoto, Ryota Iwai, Shoya Takasu, Masahiro Irie
  • Organizer: 10th International Symposium on Photochromism
  • Int'l Joint Research
• [Presentation] 蛍光性ジアリールエテンの光応答特性に対する置換基効果 (2019)
  • Author(s): 森本正和・高須翔也・岩井良太・入江正浩
  • Organizer: 日本化学会第99春季年会
• [Presentation] Development of advanced photofunctional molecular crystals based on crystal-engineering strategy (2018)
  • Author(s): Masakazu Morimoto
  • Organizer: 2018年光化学討論会
• [Presentation] Turn-on型蛍光性ジアリールエテン：置換基効果 (2018)
  • Author(s): 岩井良太・森本正和・入江正浩
  • Organizer: 2018年光化学討論会
• [Book] 未来を拓く多彩な色素材料：エレクトロニクスから医科学にまで広がる色素の世界（執筆担当章：超解像蛍光イメージングへ向けた光スイッチ型蛍光分子の開発） (2021)
  • Author(s): 森本 正和
  • Total Pages: 212
  • Publisher: 化学同人
  • ISBN: 9784759814002
• [Remarks] 立教大学森本正和研究室ホームページ
  • URL: https://www2.rikkyo.ac.jp/web/m-morimoto/index.html