EPR study of the cis-trans isomerization process in polyacetylene films
- 1 January 1981
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 42 (13) , 295-299
- https://doi.org/10.1051/jphyslet:019810042013029500
Abstract
Using EPR we have studied the isomerization process converting cis-(CH) x films to the trans form upon thermal treatment. Following the measured linewidth and number of spins versus time and temperature, it is shown that for the lowest temperatures (T < ∼ 140 °C) isomerization cannot be complete while for the highest ones (T > ∼ 200 °C) degradation becomes more and more efficient. There exists a small temperature range ( T ∼ 140-150 °C) where optimal characteristics (total isomerization + small degradation) can be achievedKeywords
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