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Issue J. Phys. Colloques
Volume 44, Number C3, Juin 1983
Conférence Internationale sur la Physique et la Chimie des Polymères Conducteurs
CONDUCTEURS ET SUPRACONDUCTEURS SYNTHÉTIQUES A BASSE DIMENSION
Page(s) C3-357 - C3-360
DOI http://dx.doi.org/10.1051/jphyscol:1983372

Conférence Internationale sur la Physique et la Chimie des Polymères Conducteurs
CONDUCTEURS ET SUPRACONDUCTEURS SYNTHÉTIQUES A BASSE DIMENSION

J. Phys. Colloques 44 (1983) C3-357-C3-360
DOI: 10.1051/jphyscol:1983372

13C NMR STUDIES OF IODINE DOPED POLYACETYLENE

I. Heinmaa1, M. Alla1, A. Vainrub1, E. Lippmaa1, M.L. Khidekel2, A.I. Kotov2 and G.I. Kozub2

1  Institute of Chemical Physics and Biophysics of the Academy of Sciences of the Estonian SSR, Lenini pst. 10, 200001 Tallinn, USSR
2  Institute of Chemical Physics of the Academy of Sciences of the USSR, 142432 Chernogolovka, USSR


Résumé
Nous décrivons des expériences de RMN sur le 13C, utilisant la polarisation croisée et la rotation à l'angle magique, sur des échantillons de cis et trans (CH)x en fonction du taux de dopage avec l'iode. Deux signaux nouveaux apparaissant au cours du dopage sont attribués à la formation de solitons chargés sans spins et à l'addition chimique d'iode sur les doubles liaisons. L'isomérisation cis-trans n'apparaît pas même pour des taux de dopants élevés.


Abstract
Natural abundance 13C NMR experiments using cross-polarization and magic angle spinning are reported for cis- and trans-polyacetylene as a function of iodine doping level. Two new signals appearing on doping are attributed to the formation of spinless charged solitons and the chemical addition of iodine to double bonds. The substantial cis/trans isomerization does not occur even at high iodine doping levels.





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