Steric Hindrance-Induced Dual Fluorescence of Congested Benzenehexacarboxylates

Article abstract of DOI:10.1021/ja00006a011

Alkyl benzenetetra- and benzenehexacarboxylates were shown to fluoresce weakly in fluid solutions, in sharp contrast to entirely nonfluorescent mono-, di-, or tricarboxylates. Interestingly, benzenehexacarboxylates with bulky alkyl groups provide a novel