Electronic Spectroscopy of Mixed Cyclophanes: [2.2](9,10)Anthracenometacyclophane, [2.2](9,10) and [3.3](9,10)-Anthracenoparacyclophane

Abstract

The absorption and fluorescence spectra of the title compounds are reported and a simple coupled chromophore model has been used to make assignments of the absorption bands. The absorption spectra show a strong interaction between the ¹L_b state of the anthracene chromophore and the ¹L_b state of the benzene chromophore in both anthracenoparacyclophanes which is absent in [2.2](9,10) anthracenometacyclophane. The fluorescence comes from the ¹L_a state of the anthracene chromophore.