Heterocyclic quinol-type fluorophores.† Synthesis of novel imidazoanthraquinol derivatives and their photophysical properties in benzene and in the crystalline state‡
Abstract
An isomeric pair of novel imidazoanthraquinol fluorophores 2 and 3 exhibiting two tautomeric forms (A and B) that are possible for the imidazole ring have been developed. In order to control the tautomeric form to improve the fluorescence properties, the N-butylated