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Ayachi, S., Alimi, K. & Molinie, P. (2006) Magnetic properties of undoped and doped poly[(3-methoxy)4,6-toluene] (P3mt). Synth. Met. 156 1415–1421.
Added by: Florent Boucher (2016-05-12 13:21:36) |
| Type de référence: Article DOI: 10.1016/j.synthmet.2006.11.008 Numéro d'identification (ISBN etc.): 0379-6779 Clé BibTeX: Ayachi2006 Voir tous les détails bibliographiques  |
Catégories: IMN Mots-clés: conducting polyaniline, electroluminescence, esr, hyperfine coupling, phenylene, photoluminescence, polymers, radical center, susceptibility Créateurs: Alimi, Ayachi, Molinie Collection: Synth. Met. |
Consultations : 7/502
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| Résumé |
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The magnetic properties of two types of poly [(3-methoxy)4,6-toluene] (P3mt(1) and P3mt(2)) are studied before and after doping with iodine or organic acids (CF3COOH or CH3SO3H) in a range of temperature varying from 110 to 460 K. Under 250 K and independent of the state, the magnetic susceptibility chi obeys Curie law dependence. Up to this temperature, chi is governed by a Pauli law contribution. This fact can be related to localized or delocalized spin. Furthermore, iodine doping induces distortion in the polymers that affects the ESR line distribution. In the case of organic acids doping process, a hyperfine structure with hyperfine coupling constant values between 2.2 and 2.8 G is observed. As the spin concentration decreases, we deduce that in the case of P3mt(2), there is a de-doping process. (c) 2006 Elsevier B.V. All rights reserved.
Added by: Florent Boucher |