多色有机室温磷光材料设计策略的研究进展

ADVANCEMENTS IN DESIGN STRATEGIES FOR MULTICOLOR ORGANIC ROOM TEMPERATURE PHOSPHORESCENT MATERIALS

多色有机室温磷光(Room Temperature Phosphorescent,RTP)材料因其发射寿命长、颜色可调、生物相容性好以及激发态性质可调控等独特的性质,在显示技术、防伪、数据加密以及传感等领域展现出巨大的应用潜力,近年来受到了研究者的广泛关注。然而,受限于有机材料的三重态激子固有的敏感性,其三重态发光性质的调控成为了一个重大挑战。因此,在有机体系中实现多色且稳定的RTP发射仍然是一项亟待解决的问题。本文旨在综述近年来在多色有机RTP材料设计方面所取得的进展,重点介绍了卤素效应、晶体工程、聚集体效应以及主客体掺杂策略。通过精心选择和设计磷光分子,结合分子内/分子间相互作用和聚集态调控,成功实现了多种颜色的RTP发射。希望本文能为多色RTP材料的合理设计提供一定的思路,并为多色RTP材料的各种前沿应用提供一定的指导。

Multicolor organic room temperature phosphorescent(RTP)materials have garnered extensive attentions in areas such as display technology,anti-counterfeiting,data encryption and sensing due to their unique features,including long emission lifetimes,tunable colors,good biocompatibility,and adjustable excited states.Nevertheless,the regulation of their triplet luminescent properties is still a major challenge because of the intrinsic sensitivity of triplet excitons.Therefore,achieving multicolor and stable RTP emission in organic systems remains a critical issue to be addressed.This article aims to review recent advancements in the design of multicolor organic RTP materials,highlighting strategies such as halogen effect,crystal engineering,aggregate effect,and host-guest doping.By carefully selecting and designing phosphorescent molecules,combined with intramolecular/intermolecular interactions and control of aggregation states,multicolor RTP emissions have been achieved successfully.It is hoped that this review can provide some ideas for the rational design of multicolor RTP materials and guidance for their various cutting-edge applications.