Development of Novel Photosensitization Materials for Selective Organic Transformations

• Project/Area Number: 19760536
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Reaction engineering/Process system
• Research Institution: Osaka University
• Principal Investigator: SHIRAISHI Yasuhiro Osaka University, 太陽エネルギー化学研究センター, 准教授 (70343259)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥2,640,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥240,000); Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2007: ¥1,600,000 (Direct Cost: ¥1,600,000)
• Keywords: 光増感剤 / 高分子 / 基質選択性 / 速度選択性 / 温度 / 生成物選択性

Research Abstract

本研究では、感温性高分子であるPoly-N-isopropylacrylamide(polyNIPAM)を基盤とした材料設計により、「基質選択性」および「速度選択性」を発現する新規光増感剤の開発を行った。polyNIPAMにローズベンガルを共重合させた高分子光増感剤により、温度制御により基質選択性を発現させることに成功した。また、ベンゾフェノンを共重合させたpolyNIPAMにより、低温、中間温度、高温で異なる反応速度を示すことを見出した。さらに、polyNIPAM中空カプセル内に光増感剤であるチオニンを内包した増感剤が低温、高温で異なる反応速度を示すことを見出した。

Research Products

• [Journal Article] Temperature-Controlled Photosensitization Properties of Benzophenone-Conjugated Thermoresponsive Copolymers (2008)
  • Author(s): Hisao Koizumi, Yasuhiro Shiraishi, Takayuki Hirai
  • Journal Title: J. Phys. Chem. B 112(42) Pages: 13238-13244
  • Peer Reviewed
• [Journal Article] Temperature-Controlled Photooxygenation with Polymer Nanocapsules Encapsulating an Organic Photosensitizer (2008)
  • Author(s): Yasuhiro Shiraishi, Yumi Kimata, Hisao Koizumi, Takayuki Hirai
  • Journal Title: Langmuir 24(17) Pages: 9832-9836
  • Peer Reviewed
• [Journal Article] Temperature-Controlled Photooxygenation with Polymer Nanocapsules Encapsulating an Organic Photosensitizer (2008)
  • Author(s): Yasuhiro Shiraishi, et.al.
  • Journal Title: Langmuir 24 Pages: 9832-9836
  • Peer Reviewed
• [Journal Article] Temperature-Controlled Photosensitization Properties of Benzophenone-Conjugated Thermoresponsive Copolymer (2008)
  • Author(s): Hisao Koizumi, et.al.
  • Journal Title: The Journal of Physical Chemistry B 112 Pages: 13238-13244
  • Peer Reviewed
• [Journal Article] Visible Light-Induced Partial Oxidation of Cyclohexane on Hydrophobically-Modified Cr-Containing Mesoporous Silica with Molecular Oxygen (2008)
  • Author(s): Yasuhiro Shiraishi, et. al.
  • Journal Title: Journal of Catalysis 254 Pages: 365-373
  • Peer Reviewed
• [Journal Article] Temperature-Controlled Changeable Oxygenation Selectivity by Singlet Oxygen with a Polymeric Photosensitizer (2007)
  • Author(s): Hisao Koizumi、Yumi Kimata、Yasuhiro Shiraishi, Takayuki Hirai
  • Journal Title: Chemical Communications (18) Pages: 1846-1848
  • Peer Reviewed
• [Journal Article] Temperature-Controlled Changeable Oxygenation Selectivity by SingletOxygen with a Polymeric Photosensitizer (2007)
  • Author(s): Hisao Koizumi, et a1.
  • Journal Title: Chemical Communications 18 Pages: 1846-1848
  • Peer Reviewed
• [Presentation] 分子インプリント高分子光増感剤による基質選択型光酸素化反応(査読無) (2009)
  • Author(s): Takeshi Suzuki, Yasuhiro Shiraishi, Takayuki Hirai
  • Organizer: 日本化学会第89春季年会
  • Place of Presentation: 日本大学船橋キャンパス
  • Year and Date: 2009-03-28
• [Presentation] 増感剤内包型ポリマーカプセルによる光酸素化反応の温度制御 (2009)
  • Author(s): 白石康浩, ら
  • Organizer: 日本化学会第88回春季大会
  • Place of Presentation: 東京(立教大学)
  • Year and Date: 2009-03-27
• [Presentation] 温度およびpHによる反応制御機能を有する高分子光増感剤の開発 (2009)
  • Author(s): 鈴木健, ら
  • Organizer: 日本化学会第88回春季大会
  • Place of Presentation: 東京(立教大学)
  • Year and Date: 2009-03-27
• [Presentation] 増感剤内包型ポリマーカプセルによる光酸素化反応の温度制御 (2008)
  • Author(s): Yasuhiro Shiraishi, Yumi Kimata, Hisao Koizumi, Takayuki Hirai
  • Organizer: 日本化学会第88春季年会(査読無)
  • Place of Presentation: 立教大学池袋キャンパス
  • Year and Date: 2008-03-27
• [Presentation] 温度およびpHによる反応制御機能を有する高分子光増感剤の開発 (2008)
  • Author(s): Takeshi Suzuki, Hisao Koizumi, Yasuhiro Shiraishi, Takayuki Hirai
  • Organizer: 日本化学会第88春季年会(査読無)
  • Place of Presentation: 立教大学池袋キャンパス
  • Year and Date: 2008-03-27
• [Presentation] Temperature-controlled changeable photooxygenation selectivity with a polymeric photosensitizer as a microreactor (2007)
  • Author(s): Hisao Koizumi, Yumi Kimata, Yasuhiro Shiraishi, Takayuki Hirai
  • Organizer: American Chemical Society 234^<th> National Meeting and Exposition(査読無)
  • Place of Presentation: Boston Convention & Exhibition Center
  • Year and Date: 2007-08-21
• [Presentation] Photosensitization properties of thermoresponsive polymer containing a benzophenone fragment (2007)
  • Author(s): Hisao Koizumi, Yasuhiro Shiraishi, Takayuki Hirai
  • Organizer: American Chemical Society 234^<th> National Meeting and Exposition(査読無)
  • Place of Presentation: Boston Convention & Exhibition Center
  • Year and Date: 2007-08-21
• [Presentation] Oxygenation rate control by temperature with a thermoresponsive polymeric photosensitizer (2007)
  • Author(s): Hisao Koizumi, Yasuhiro Shiraishi, Takayuki Hirai
  • Organizer: American Chemical Society 234^<th> National Meeting and Exposition(査読無)
  • Place of Presentation: Boston Convention & Exhibition Center
  • Year and Date: 2007-08-21
• [Presentation] Selective Organic Transformations on Photocatalysts (2007)
  • Author(s): Yasuhiro Shiraishi, Takayuki Hirai
  • Organizer: American Chemical Society 234^<th> National Meeting and Exposition(査読無)
  • Place of Presentation: Boston Convention & Exhibition Center
  • Year and Date: 2007-08-21
• [Presentation] Selective Organic Transformations on Photocatalysts (2007)
  • Author(s): Yasuhiro Shiraishi, et. al.
  • Organizer: American Chemical Society 234th National Meeting and Exposition
  • Place of Presentation: Boston Convention &Exhibition Center
  • Year and Date: 2007-08-21
• [Presentation] Oxygenation rate control by temperature with a thermoresponsive polymeric photosensitizer (2007)
  • Author(s): Hisao Koizumi, et. al.
  • Organizer: American Chemical Society 234th National Meeting and Exposition
  • Place of Presentation: Boston Convention &Exhibition・ Center
  • Year and Date: 2007-08-21
• [Presentation] Photosensitization properties of thermoresponsive polymer containinga benzophenone fragment (2007)
  • Author(s): Hisao Koizumi, et. al.
  • Organizer: American Chemical Society 234th NationalMeeting and Exposition
  • Place of Presentation: Boston Convention &Exhibition, Center
  • Year and Date: 2007-08-21
• [Presentation] Temperature-controlled changeable photooxygenation selectivity witha polymeric photosensitizer as a microreactor (2007)
  • Author(s): Hisao Koizumi, et. al.
  • Organizer: American Chemical Society 234th National Meeting and Exposition
  • Place of Presentation: Boston Convention &Exhibition Center
  • Year and Date: 2007-08-21
• [Remarks]
  • URL: http://www.cheng.es.osaka-u.ac.jp/hirailab/