Blue-shifted aggregation-induced enhancement of a Sn() fluoride complex: the role of fluorine in luminescence enhancement

A new type of blue-shifted aggregation-induced emission enhancement was observed for a Sn( iv ) fluoride complex, resulting in strong emission in the solid state as compared with that in solutions. The fluorinated Sn( iv ) complex has a significantly more intense emission efficiency compared to the chlorinated Sn( iv ) complex, which is attributed to stronger σ bonding. A fluorinated Sn( iv ) complex not only significantly enhances the emission efficiency, but also exhibits blue-shifted aggregation-induced emission enhancement (AIEE) properties.