Supramolecular hydrogel with tunable multi-color and white-light fluorescence from sulfato--cyclodextrin and aminoclay

A multi-color-tunable supramolecular hydrogel is constructed from aminoclay (AC), sulfato--cyclodextrin (SCD), and 4-methyl-styrylpyridinium (SP), in which the SCDSP complex emits monomer fluorescence, and AC provides a restricted environment for excimer emission. The emission color of the supramolecular hydrogel can be tuned from yellow white blue by adjusting the SCD/SP molar ratio.