Front Cover: Molecular mechanism of aggregation-induced emission

This review provides a comprehensive and profound theoretical picture of the inherent molecular mechanisms of aggregation-induced emission in a variety of AIEgens. It is expounded about the closing of the nonradiative decays pathways and opening of the radiative decay pathway and their dependence on molecular systems. These will be helpful to deeply understanding the universality of AIE phenomenon. (Aggregate. 2021;2:e91)