The Impact of Ionic Surfactants on the Crystallisation of Glycine Polymorphs

The glycine polymorphs have provided a rich and challenging tapestry for crystal growth and polymorphism studies. In this new contribution we report some preliminary studies of the impact of two ionic surfactants on the morphologies and the competitive crystallisation of the alpha and gamma polymorphs. We find both selective growth inhibition and acceleration combined with fascinating crystal aggregates. The role of both monomeric and micellar forms of the surfactants are explored and discussed in terms of nucleation and crystal growth processes.