Synthesis of new materials based on polythiophenes substituted with mesogen groups

Soto, JP; Diaz, FR; del Valle, MA; Nunez, CM; Bernede, JC

Abstract

A new family of conjugated polymers formed by 3-alkyloximethylthiophenes substituted with a biphenyl group was synthesised by a route involving first the coupling of a functionalised alkyl chain, from 8 to 12 carbon atoms, to 3-methanolthiophene, and then the attachment of the mesogen group. The monomer was characterised by conventional techniques, and thermal studies were also achieved. The polymerisation of these units was carried out via oxidative polymerisation with FeCl 3. The resultant polymers were characterised by FT-IR, elemental microanalysis and XPS. Subsequently, these materials were doped with I 2 and characterised by the above techniques and conductivity measurements, which indicated that these materials are in the semiconductor range. The polymerisation of these monomers was also carried out via electrochemical methods, and it was found that, together with the oxidation of the thiophene ring, the oxidation of the biphenyl group is also produced, for which an over-oxidised material is obtained, as demonstrated by XPS analysis and theoretical calculations. © 2005 Elsevier Ltd. All rights reserved.

Más información

Título según WOS: Synthesis of new materials based on polythiophenes substituted with mesogen groups
Título según SCOPUS: Synthesis of new materials based on polythiophenes substituted with mesogen groups
Título de la Revista: EUROPEAN POLYMER JOURNAL
Volumen: 42
Número: 4
Editorial: PERGAMON-ELSEVIER SCIENCE LTD
Fecha de publicación: 2006
Página de inicio: 935
Página final: 945
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0014305705003964
DOI:

10.1016/j.eurpolymj.2005.10.011

Notas: ISI, SCOPUS