Two-phase separation observed in thermally treated pellets of ClO4- doped poly(3-methylthiophene) from electron spin resonance measurements
Nenhuma Miniatura disponível
Data
1996-04-01
Autores
Pereira, E. C.
Pawlicka, A.
Bulhoes, LOS
Nascimento, O. R.
Walmsley, L.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
A pressed pellet of CIO (-)(4) poly (3-methylthiophene) (P3MT) was heated for two hours at 85 degrees C and suddenly dropped in liquid nitrogen. A change was observed around 220 K in the Electron Spin Resonance (ESR) spectra when the sample was slowly cooled from room temperature. ESR line asymmetry parameter (A/B) showed two spatially separated phases. One was identified as a small metallic-like phase. The other phase, the larger one, makes a transition to a semiconducting Charge-Density Wave (CDW) state.
Descrição
Palavras-chave
polymers, electron-phonon interactions, electron paramagnetic resonance
Como citar
Solid State Communications. Oxford: Pergamon-Elsevier B.V., v. 98, n. 4, p. 267-271, 1996.