Kinetics of crystallization of poly(octylthiophene) conducting gels. NMR approach

Authors
Viallat, A Pepin-Donat, B
Citation
A. Viallat et B. Pepin-donat, Kinetics of crystallization of poly(octylthiophene) conducting gels. NMR approach, SYNTH METAL, 101(1-3), 1999, pp. 122-122
Citations number
3
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
101
Issue
1-3
Year of publication
1999
Pages
122 - 122
Database
ISI
SICI code
0379-6779(199905)101:1-3<122:KOCOPC>2.0.ZU;2-4
Abstract
Conjugated poly(octylthiophene) (POT) gels are semi-crystalline. Their kine tics of crystallization are observed from IH-NMR versus temperature, T, and crosslink concentration. Crystalline ratios are quantitatively determined. They depend on the thermal gel history and on the crosslink ratio. Two mec hanisms of crystallization are detected which are characterized by differen t crystallization rates. They are controlled either by a slow arrangement o f main chains (T>100 degrees C) or by a fast ordering of side-chains (T<100 degrees C). The most crosslinked gels exhibit only side chains ordering.