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.

Spectroscopic comparison between poly[3-(6-methoxyhexyl)thiophene]s with different steric hindrance

Costa-Bizzarri P.;Lanzi M.;Bertinelli F.;
1999

Abstract

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.
Costa-Bizzarri P.; Della-Casa C.; Lanzi M.; Bertinelli F.; Iarossi D.; Mucci A.; Schenetti L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/879332
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