Zinc(ii) driven intra-molecular electronic energy transfer in a supramolecular assembly held by coordinative interactions

Abstract

In a MeOH solution the complex [ZnII(L)]2+ gives an adduct with the coumarin-343 anion and an electronic energy transfer process takes place from the fluorophore placed on the ligand L to the fluorescent anion, according to a mechanism which can be reversively switched OFF–ON following an acid–base input.