Author/Authors :
Walmsley، نويسنده , , L. and Nascimento، نويسنده , , O.R. and Pawlicka، نويسنده , , A. and Correa، نويسنده , , A.A. and Oliveira، نويسنده , , A.A.J. and Ortiz، نويسنده , , W.A. and Bulhُes، نويسنده , , L.O.S. and Pereira، نويسنده , , E.C.، نويسنده ,
Abstract :
Electron Spin Resonance (ESR) data in pressed pellets of doped poly(3-methylthiophene) (P3MT) show a single ESR line that changes into a broad and a narrow superimposed lines below 225K. D.C. susceptibility measurements using a SQUID susceptometer didnʹt reveal any special feature at this temperature. Assuming crystallization of the polymer, we attribute the broad line to the crystalline fraction of the polymer and the narrow line to the amorphous one.
Keywords :
Magnetic measurements , Structural phase transitions , polythiophene and derivatives , electron spin resonance
