C-13-CPMAS NMR CHARACTERIZATION AND MOLECULAR-DYNAMICS OF OLIGOTHIOPHENES IN THE SOLID-STATE

(13)-Cross polarization magic angle spinning (CPMAS) NMR excellently s uited to studying the solid-state structure, conformation and molecula r dynamics of oligothiophenes, but to date few data are available. The investigation reported here focuses on a homologous series of unsubst ituted oligothiophenes. It is shown that C-13-CPMAS NMR is capable of detecting changes in the symmetry properties of the oligothiophenes an d of discriminating between odd- and even-number oligothiophenes.