Sercheli, M. S.Walmsley, L. [UNESP]Rettori, C.Correa, A. A.Bulhões, L. O. S.Pereira, E. C.2014-05-272014-05-272000-07-01Physica Status Solidi (B) Basic Research, v. 220, n. 1, p. 631-634, 2000.0370-1972http://hdl.handle.net/11449/66186Electron spin resonance (ESR) experiments give extremely important information concerning spin arrangements in conducting polymers. This is evidenced by the behavior of the ESR lines as a function of temperature and microwave power. Our ESR data of pressed pellets of ClO- 4 doped poly(3-methylthiophene) (P3MT) synthesized at 25 °C show the predominance of polarons. Instead, the sample prepared at 5 °C shows the predominance of bipolarons. Besides, for both types of samples, crystallization, observed from the ESR data, has shown a rearrangement of spin species.631-634engArtigo10.1002/1521-3951(200007)220:1<631::AID-PSSB631>3.0.CO;2-0WOS:000088768800113Acesso restrito2-s2.0-0034341949