Preparation, Structure, and Spectral Properties of Cyclophanes Consisting of Oligothiophene Units

Abstract

Abstract Small-sized cyclophanes consisting of oligothiophene units as a component have been prepared. Correlation between the cyclophane structure and fluorescence spectral properties has been examined. It has been found that emission from intramolecular excimer-formation is confirmed for the cyclophanes having two or three thiophene units, but not for those having four or five thiophene units with the β-hexyl chain.