Aggregated coordination polymers of Ag with a cysteine derivative ligand containing an AIEgen.

We investigated coordination polymers of Ag with a cysteine-based thiol ligand designed to contain a tetraphenylethylene AIEgen (L- and D-1). The coordination polymers, forming in a variety of protic and aprotic organic solvents, such as THF, CHCN and CHOH, were shown to undergo aggregation in HO/THF binary solvents at water volume fractions above 50%, where emission was substantially enhanced while the CD profile was reversed, yet the dependence of the CD signal on ee remained S-shaped for the polymers in the aprotic organic solvents THF and CHCN, in contrast to that in protic solvents CHOH and CHOH.