13C-CPMAS NMR characterization and molecular dynamics of oligothiophenes in the solid state

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