Formation of unstable photodimers of anthracene in regioisomers of bis(anthracene-9-carbonyl)-γ-cyclodextrins

Abstract
Two anthracene-9-carbonyl moieties attached to AB, AC, AD, and AE glucose units of γ-cyclodextrin undergo intramolecular photodimerization, giving unstable photodimers for AB and AC regioisomers and stable photodimers for others.