Free Access
Issue
J. Chim. Phys.
Volume 95, Number 6, June 1998
Page(s) 1165 - 1167
DOI https://doi.org/10.1051/jcp:1998238
DOI: 10.1051/jcp:1998238


J. Chim. Phys. Vol. 95, N°6  p. 1165-1167

Fractionated regioregular poly(3-hexylthiophene). Spectroscopic and electrochemical studies

M. Trznadel

CEA-Grenoble, Département de Recherche Fondamentale sur la Matière Condensée, Laboratoire de Physique des Métaux Synthétiques, 17 rue des Martyrs, 38054 Grenoble, France

Abstract
Regioregular poly(3-hexylthiophene) was obtained and fractionated into four fractions of different molecular weights (Mn) exhibiting low polydispersity coefficients. UV-VIS spectra confirm the increase of average conjugation length with the increase of the Mn of fractions. Voltammetric curves of fractions corroborate UV-VIS results and show that the contribution of poorly conjugated segments decrease with the Mn.

Résumé
Le poly(3-hexylthiophene) régiorégulier a été synthétisé et fractionné en quatre fractions de masses moléculaires (Mn) différentes présentant de faibles indices de polymolécularité. Les spectres UV-VIS confirment l'augmentation de la longueur de conjugaison moyenne avec l'accroissement de Mn. Les voltammogrammes des fractions confirment les résultats UV-VIS et montrent que la contribution des segments faiblement conjugués diminue avec l'augmentation de Mn.


Key words: poly(3-alkylthiophenes) -- regioregular polymer -- fractionation
Contents

© EDP Sciences 1998

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