Currently, the most of important working mechanisms of AIEgens is restriction of intramolecular motion (RIM) , which can be divided into restriction of intramolecular rotation (RIR) and restriction of intramolecular vibration (RIV). So far, the vast majority of reported AIE molecules are based on the RIR mechanism (RIR-type AIE), and RIR-type AIEgens have made significant progress in both intrinsic mechanisms and applications . In contrast, the development of AIE molecules based on RIV mechanism (RIV-type AIE) are relatively tardy and gradual owe to the complicated synthetic procedures and obscure luminescence mechanisms .