聚集诱导发光材料研究进展

Recent progress of aggregation-induced emission materials

传统的有机光功能材料在聚集状态下,荧光通常会减弱或淬灭,制约了有机光电功能材料的实际应用.具有聚集诱导发光(AIE)性质的化合物在聚集状态下,通过分子组成、结构和堆积模式的调节实现荧光增强,弥补了传统光功能材料在该方面的不足,在电致发光、固体激光、荧光传感与生物成像等领域展现出广阔的应用前景.该文主要介绍了目前研究最全面、适用范围最广的分子内旋转受限、分子内振动受限、分子内运动受限和形成J-聚集体等机制.同时分类介绍了一些基于分子结构和组成的AIE化合物.

The fluorescence of traditional organic optical functional materials usually weakens or quenches in condensed state which greatly limits the practical use of these materials.The compounds with aggregation-induced emission(AIE)property can modulate the intensity of the fluorescence by adjusting the molecular constituents,structure and stack morphology,which makes up the shortcomings of traditional optical functional materials,and greatly expands the scope of practical applications,such as light-emitting diodes,solid laser,chemo/bio-sensors etc.This article focuses on the mechanisms for the AIE phenomenon,such as restricted intramolecular rotation,restricted intramolecular vibrations,restricted intramolecular motion,intramolecular coplanarization and J-aggregation.In addition,some AIE systems were studied based on the composition and structure of molecules.