Pereira, E. C.Pawlicka, A.Bulhoes, LOSNascimento, O. R.Walmsley, L.2014-05-202014-05-201996-04-01Solid State Communications. Oxford: Pergamon-Elsevier B.V., v. 98, n. 4, p. 267-271, 1996.0038-1098http://hdl.handle.net/11449/36710A 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.267-271engpolymerselectron-phonon interactionselectron paramagnetic resonanceArtigo10.1016/0038-1098(96)00061-0WOS:A1996UC21500001Acesso restrito