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