Development of polarized white luminescent materials based on design of molecular orientation patterns

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K21131
• Project/Area Number (Other): 18H05984 (2018)
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund (2019); Single-year Grants (2018)
• Review Section: 0501:Physical chemistry, functional solid state chemistry, organic chemistry, polymers, organic materials, biomolecular chemistry, and related fields
• Research Institution: Ritsumeikan University
• Principal Investigator: Hisano Kyohei 立命館大学, 生命科学部, 助教 (30822845)
• Project Period (FY): 2018-08-24 – 2021-03-31
• Keywords: 発光 / フィルム / 分子配向

Outline of Final Research Achievements

For realizing next-generation photonic and optic microsystems, the single luminescent films, enabling to exhibit on-demand polarization state, have attracted much attention. Recently, various luminescent molecules with high quantum yield even in aggregate such as film, referred as to aggregation-induced emission (AIE), have been developed. However, the control of the polarization state of AIE molecules remains challenging. In this study, we have succeeded to synthesize the AIE molecules and control the polarization state by designing molecular orientation patterns.

Free Research Field

機能物性化学

Academic Significance and Societal Importance of the Research Achievements

本研究では，分子構造設計により発光特性（強度や波長）を，分子配向設計により偏光モード（直線偏光や円偏光）を独立して制御できることを明らかにした。フィルムなど分子が凝集した状態においても高強度かつ偏光制御された発光が可能となるため，従来の光デバイスの高機能化や小型化が容易となり得る。更なる研究の発展により次世代型ディスプレイやセキュリティーインクへの応用が期待できる。