Development of photo-luminochromic crystals using unsymmetric diarylethene coordinated gold(I) complexes

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K15304
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 34010:Inorganic/coordination chemistry-related
• Research Institution: Nara Institute of Science and Technology (2023); Ryukoku University (2020-2022)
• Principal Investigator: Hattori Yohei 奈良先端科学技術大学院大学, 先端科学技術研究科, 特任助教 (30843271)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 発光 / 蛍光 / フォトクロミズム / ジアリールエテン / 金(I)錯体 / 安定ラジカル

Outline of Final Research Achievements

Five novel luminescent unsymmetric diarylethenes were synthesized, and their photoluminochromic properties were confirmed. Coordination properties of these luminescent unsymmetric diarylethene ligands were investigated. Coordination to some metals was observed, and a luminescent gold (I) complex was successfully isolated. A stable luminescent radical attached with photochromic site was also synthesized. Luminescent radicals that serve as gold (I) complex ligands, and luminescence-modulating bridged diradicals that can serve as the basis for a photoluminochromic material were also newly developed.

Free Research Field

光機能分子

Academic Significance and Societal Importance of the Research Achievements

物質の発光特性を光と金属有機物間の配位結合によって制御しようとする本研究は、光を当てると発光の様子が変わるフォトルミノクロミック分子の新輝合成と、金属原子への配位によるフォトルミノクロミック特性の制御により部分的成功を収めた。また、同時に開発された配位性安定発光ラジカル・ジラジカル分子は有機ELディスプレイへの応用等、より直接的に社会に役立つ発光分子となる可能性がある。光制御発光デバイスの基礎となる意義ある新規発光材料を多数産み出すことができた。