An alternating methoxyhexylthiophene-thiophene copolymer was synthesized from 3-(6-methoxyhexyl)-2,2'-bithiophene and studied chiefly by means of optical absorption and nuclear magnetic resonance spectroscopy. The results were compared with those of the previously obtained poly[3-(6-methoxyhexyl)-2,5-thienylene]. The differences in the UV-Vis spectra of the two polymers in pure solvents, solvent/non-solvent mixtures and in films are discussed on the basis of the microstructure and the steric hindrance along the backbone. NMR spectroscopy revealed copolymer configuration to be regiorandom with a slight prevalence of head-to-head and tail-to-tail junctions. (C) 1999 Elsevier Science S.A. All rights reserved.

Spectroscopic comparison between poly[3-(6-methoxyhexyl)thiophene]s with different steric hindrance / P., Costa Bizzarri; C., Della Casa; M., Lanzi; F., Bertinelli; Iarossi, Dario; Mucci, Adele; Schenetti, Luisa. - In: SYNTHETIC METALS. - ISSN 0379-6779. - STAMPA. - 104(1999), pp. 1-7.

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