Supramolecular assemblies of oligothiophene derivatives bearing β-cyclodextrin

2T-βCD2 and 3T-βCD2, which have bithiophene (2T) and terthiophene (3T) with β-cyclodextrin (CD) at each end form supramolecular assemblies in aqueous solutions. These supramolecular assemblies were characterized by NMR, UV, fluorescence spectroscopy, circular dichroism spectroscopy, and atomic force microscope (AFM). Supramolecular assemblies from 3T-βCD2 form orientated structures due to their π–π stacking ability. AFM images of the supramolecular assembly incorporating 3T-βCD2 showed fibrous objects on mica substrates.