as depicted in Figure , different donor-acceptor (D-A) functional group substitutions were made to adjust the photophysical properties of DPI framework, thereby obtaining a multicolour fluorescent AIEgens (Figure ). In comparison with the other DPI derivatives carrying D/A functional group grafts, DPI-7 (The red-highlighted molecule in Figure ) exhibited solution-solid dual emission (SSDE) behaviour, exhibit notable similarities have exhibited to another reported study with the vibrational molecular characteristics of the stripe-shape COT core which also possess SSDE behaviour. Such phenomenon indicates the lack of a fundamental disparity between SSDE and AIE. Crucially, by fine-tuning the rigid molecular vibrational scaffold and the intensity of surrounding D/A grafted assembly, both the quenching/emission degrees of molecules in solution/aggregated states can be effectively regulated.