一种吲哚基氟硼化合物的荧光性能研究

Research on the Fluorescence Properties of a Novel Indole-based Difluoroboron Compound

吲哚基团由于优异的光学性能,已被广泛用于构筑新型荧光分子.本文以吲哚-2-羧酸甲酯为原料,对吲哚基团的N1位点进行结构化修饰,制备一种吲哚基氟硼化合物,并对其进行光学性能测试.结果表明,前线轨道电荷分布的分离以及扭曲的非共面空间构型,是该化合物具有分子内电荷转移特性和聚集诱导发光性能的主要原因.固体粉末的力致荧光行为源于分子堆积模式在晶型与非晶型间的转变.

Indole group has been widely used to construct novel fluorescent molecules due to its excellent optical property.In this paper,a novel indole-based difluoroboron compound was prepared by structurally modifying the N1 site of indoline-2-carboxylic acid as raw material,and its optical property was tested.The result showed that the separation of frontier orbital charge distribution and the twisted non-coplanar spatial configuration were the main reasons for the intramolecular charge transfer and aggregation-induced emission properties.The mechanofluorochromic behavior of solid powders originated from the transition of molecular stacking modes between crystalline and amorphous phases.