2-PHASE SEPARATION OBSERVED IN THERMALLY TREATED PELLETS OF CLO4- DOPED POLY(3-METHYLTHIOPHENE) FROM ELECTRON-SPIN-RESONANCE MEASUREMENTS

Authors
PEREIRA EC PAWLICKA A BULHOES LOS NASCIMENTO OR WALMSLEY L
Citation
Ec. Pereira et al., 2-PHASE SEPARATION OBSERVED IN THERMALLY TREATED PELLETS OF CLO4- DOPED POLY(3-METHYLTHIOPHENE) FROM ELECTRON-SPIN-RESONANCE MEASUREMENTS, Solid state communications, 98(4), 1996, pp. 267-271
Citations number
13
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
98
Issue
4
Year of publication
1996
Pages
267 - 271
Database
ISI
SICI code
0038-1098(1996)98:4<267:2SOITT>2.0.ZU;2-6
Abstract
A pressed pellet of CIO (-)(4) poly (3-methylthiophene) (P3MT) was hea ted for two hours at 85 degrees C and suddenly dropped in liquid nitro gen. 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 ph ases. One was identified as a small metallic-like phase. The other pha se, the larger one, makes a transition to a semiconducting Charge-Dens ity Wave (CDW) state.