Stealth Photochromism based on Electrocyclization

2009 Fiscal Year Self-evaluation Report

• Project Area: New Horizons of Photochromism: Customized Molecular Design and Novel Applications
• Project/Area Number: 19050004
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Yokohama National University
• Principal Investigator: YOKOYAMA Yasushi Yokohama National University, 工学研究院, 教授 (60134897)
• Project Period (FY): 2007 – 2010
• Keywords: フォトクロミズム / 吸収波長制御 / 量子収率 / ジアステレオ選択的光環化

Research Abstract

本特定領域研究A02班の「新規・高性能フォトクロミック系」創出の一部をなす研究として、「紫外部のみ、あるいは可視部の長波長～近赤外部に吸収をもつフォトクロミック系の構築」を行う。さらに、その応用の方途であるディスプレイへの展開において必要な、高度に立体選択的な光環化、および高い光反応量子収率を達成することを目指す。

Research Products

• [Journal Article] Structurally Versatile Novel Photochromic Bisarylindenone and Its Acetal: Achievment of Large Cyclization Quantum Yield (2009)
  • Author(s): K. Morinaka, T. Ubukata, Y. Yokoyama
  • Journal Title: Org. Lett. 11 Pages: 3890-3893
  • Peer Reviewed
• [Journal Article] A Unified Strategy for Exceptionally High Diastereoselectivity of Photochromism of Chiral Diarylethenes (2009)
  • Author(s): Y. Yokoyama, T. Shiozawa, Y. Tani, T. Ubukata
  • Journal Title: Angew. Chem. Int. Ed. 48 Pages: 4521-4523
  • Peer Reviewed
• [Journal Article] Dendrimer Diarylethenes: Memory Effect of Conformation in Polymer Matrices (2008)
  • Author(s): Y. Fujimoto, T. Ubukata, Y. Yokoyama
  • Journal Title: Chem. Commun. 2008 Pages: 5755-5757
  • Peer Reviewed
• [Presentation] 高性能フォトクロミック化合物の創製 (2010)
  • Author(s): 横山泰
  • Organizer: 日本化学会第90春季年会第二次先端ウオッチングイブニングセッション
  • Place of Presentation: 東大阪
  • Year and Date: 2010-03-27
• [Presentation] High Performance Photochromic Systems Based on 6π-Electrocyclization (2009)
  • Author(s): Y. Yokoyama
  • Organizer: International Workshop on Organic Photoswitchable Multifunctional Materials
  • Place of Presentation: Shanghai, China
  • Year and Date: 2009-10-26
• [Presentation] Ultimate Diastereoselectivity in Photochromic Diarylethenes (2008)
  • Author(s): Y. Yokoyama, T. Shiozawa, Y. Tani, T. Ubukata
  • Organizer: Japanese-French Joint Symposium -New Horizons of Photochromism-
  • Place of Presentation: Arras, France
  • Year and Date: 2008-10-13
• [Presentation] Methods to Enhance the Reactivity of Diarylethenes in Polymer Matrices (2007)
  • Author(s): Y. Yokoyama
  • Organizer: International Symposium on Photochromism 2007
  • Place of Presentation: Vancouver, Canada
  • Year and Date: 2007-10-09
• [Book] 機能性色素の合成と応用技術 (2007)
  • Author(s): 横山泰, 具志堅剛史
  • Total Pages: 141-156
  • Publisher: シーエムシー出版
• [Patent(Industrial Property Rights)] フォトクロミックオルガノポリシロキサン組成物 (2010)
  • Inventor(s): 横山泰・斎藤雅子
  • Industrial Property Rights Holder: 横浜国立大学・(株)ADEKA
  • Industrial Property Number: 特願・2010-052591
  • Filing Date: 2010-03-10