Triplet Harvesting by Control of the Transition State

2018 Fiscal Year Final Research Report

• Project/Area Number: 16KT0049
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Multi-year Fund
• Section: 特設分野
• Research Field: Transition State Control
• Research Institution: Niigata University
• Principal Investigator: Ikoma Tadaaki 新潟大学, 自然科学系, 教授 (10212804)
• Co-Investigator(Kenkyū-buntansha): 長谷川 英悦 新潟大学, 自然科学系, 教授 (60201711)
• Research Collaborator: YAGO Tomoaki
• Project Period (FY): 2016-07-19 – 2019-03-31
• Keywords: 遷移状態 / 活性錯合体 / 三重項融合 / 遅延蛍光 / 磁気発光効果 / スピン角運動量保存則 / スピン動力学

Outline of Final Research Achievements

Because of the social demands for green innovation based on the strategy to reduce consumption of precious many elements, expectations for the next generation of photoelectric energy conversion devices using organic materials are significantly increasing. However, since the conversion efficiency of the organic electroluminescent diode or the organic solar cell is extremely low, it has not been put into practical use in full scale. Effective utilization of triplet excitons (triplet harvesting) holds the key to achieving ultra-high efficiency of organic electronic devices. In this research, we succeeded in raising the triplet fusion efficiency by spin angular momentum control in the transition state.

Free Research Field

物理化学

Academic Significance and Societal Importance of the Research Achievements

三重項融合の遷移状態動力学が明らかにされ、反応効率の向上にとってスピン統計だけでなくスピン動力学が重要であることを示した。有機電子デバイスにおけるスピン制御という新しい開発基軸を提示できた。光源や電力供給源の高効率化に貢献できる。