Two-phase separation observed in thermally treated pellets of ClO4- doped poly(3-methylthiophene) from electron spin resonance measurements

Pereira, E. C.; Pawlicka, A.; Bulhoes, LOS; Nascimento, O. R.; Walmsley, L.

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/36710

Title:

Two-phase separation observed in thermally treated pellets of ClO4- doped poly(3-methylthiophene) from electron spin resonance measurements

Author(s):

Institution:

Universidade de São Paulo (USP)
Universidade Estadual Paulista (UNESP)

ISSN:

0038-1098

Abstract:

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.

Issue Date:

1-Apr-1996

Citation:

Solid State Communications. Oxford: Pergamon-Elsevier B.V., v. 98, n. 4, p. 267-271, 1996.

Time Duration:

267-271

Publisher:

Elsevier B.V.

Keywords:

polymers
electron-phonon interactions
electron paramagnetic resonance

Source:

http://dx.doi.org/10.1016/0038-1098(96)00061-0

URI:

Access Rights:

Acesso restrito

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/36710

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