RAMAN STUDY OF DOPED POLYACETYLENES

Abstract
We present Raman scattering results obtained on doped polyacetylene films, using a variety of dopants including electron acceptors (I2, Br2, SbF5, ClO4-, FeCl3) and electron donors (Li for example). We show that a cis-trans isomerization is always induced upon doping. Compared to an undoped trans-(CH)x, the doping process leads to a shortening of the trans sequences, if the model of the chain length distributions is valid. For all doped samples, an additional band is observed close to the C=C stretch Raman band at about 1600 cm-1

This publication has 0 references indexed in Scilit: