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Study of the evolution of the conductivity of iodine‐doped poly( N ‐vinylcarbazole) as a function of annealing treatment
Author(s) -
Safoula G.,
Bernede J. C.,
Alimi K.,
Molinie P.,
Touihri S.
Publication year - 1996
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19960606)60:10<1733::aid-app26>3.0.co;2-3
Subject(s) - annealing (glass) , conductivity , electron paramagnetic resonance , raman spectroscopy , doping , materials science , analytical chemistry (journal) , electrical resistivity and conductivity , nuclear magnetic resonance , polymer , conductive polymer , chemistry , polymer chemistry , optics , organic chemistry , composite material , physics , optoelectronics , quantum mechanics
Electron spin resonance (ESR) and d.c. conductivity measurements on iodine‐doped poly( N ‐vinylcarbazole) (PVK) as a function of annealing treatment was performed. When doped at room temperature as at 370 K, the appearance of an ESR signal and the increase of the conductivity can be explained by CT complex formation between iodine and PVK. The correlation between conductivity σ and spin density N s was observed as a function of the annealing temperature. At higher annealing temperature, the decrease of the conductivity and of the ESR signal is attributed to the PVK degradation and to the formation of a new conjugated polymer. All these results and their discussion are in good agreement with X‐ray diffraction, Raman diffusion, and earlier studies. © 1996 John Wiley & Sons, Inc.