Establishment of the theory of excitation-driven element blocks and creation of functional optical materials

2020 Fiscal Year Final Research Report

• Project/Area Number: 20K20368
• Project/Area Number (Other): 18H05356 (2018-2019)
• Research Category: Grant-in-Aid for Challenging Research (Pioneering)
• Allocation Type: Multi-year Fund (2020); Single-year Grants (2018-2019)
• Review Section: Medium-sized Section 35:Polymers, organic materials, and related fields
• Research Institution: Kyoto University
• Principal Investigator: Chujo Yoshiki 京都大学, 工学研究科, 名誉教授 (70144128)
• Co-Investigator(Kenkyū-buntansha): 田中 一生 京都大学, 工学研究科, 教授 (90435660) ; 権 正行 京都大学, 工学研究科, 助教 (90776618)
• Project Period (FY): 2018-06-29 – 2021-03-31
• Keywords: ホウ素 / 共役系高分子 / 発光 / 刺激応答性

Outline of Final Research Achievements

We proved that the molecular skeleton showing intense solid-state emission and stimulus responsiveness can be theoretically designed from scratch. By investigating the skeleton in which there is a large difference in structure between in the ground state and in the excited state, the development of boron complexes having further functionality can be realized. The concept of "excitation-driven element blocks" is expected to be a pioneer in the new field focusing on the characteristics of elements in the excited state. In addition to boron complexes, various functional complexes based on theoretical calculations are expected to be developed. Through the research period of Challenging Research (Pioneering), we established the theory of excitation-driven element blocks and succeeded in producing valuable functional materials.

Free Research Field

高分子化学

Academic Significance and Societal Importance of the Research Achievements

本成果が確立した”励起駆動型元素ブロックの学理“は、機能性発光材料の分子設計に革新をもたらすポテンシャルがある。例えば、従来用いられてきた有機材料に構造緩和を誘起する骨格を導入することで直ちに刺激応答性材料の作製が可能になると期待され、材料設計の幅を大きく拡張する概念となる。この結果は学術的意義だけでなく、材料応用を生み出す指針となるため、社会的意義も大きいと言える。特に、ホウ素が励起駆動を担う元素として機能すると実例を示したことの意義が大きい。本研究結果は、光化学、構造有機化学、材料科学の分野におけるヘテロ元素化学の新しい学理を拓くと期待している。