Polymorphs from supramolecular gels: four crystal forms of the same silver(Ⅰ) supergelator crystallized directly from its gels

摘要

A new silver(Ⅰ) complex with l-phenyl-3-(quinolin-5-yl)urea has been prepared, acting as a supramolecular supergelator in the presence of polar solvents. In open vials temperature dependent, reversible gel-to-xerogel transition is observed, while in sealed vials direct crystallization of four polymorphs of the same gelling compound is achieved, depending on the gelling solvent.