AN INSITU RAMAN-STUDY OF THE ELECTROCHEMICAL DOPING OF ORIENTED DURHAM POLYACETYLENE

被引:4
作者
BARKER, J
WILLIAMS, KPJ
机构
[1] British Petroleum Research Centre, Sunbury-on-Thames, Middlesex TW16 7LN, Chertsey Road
关键词
POLYACETYLENE; DOPING; RAMAN SPECTROSCOPY;
D O I
10.1016/0032-3861(91)90100-W
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The results of a Raman study on electrochemically Na+ doped oriented Durham polyacetylene are presented. The spectral changes observed suggest that low doping levels cause an effective shortening of the conjugated length. Doping to 3 mol% Na+ gives a two-phase behaviour for the doped polymer. Beyond 6 mol% the spectra recorded are consistent with a delocalized structure. An additional Raman band at 1268 cm-1 is assigned to a carbon-carbon stretching mode which has significant double-bond character. Following an electrochemical doping-undoping cycle the polymer does not return to the pristine state but shows signs of either polymer degradation or residual dopant ion remaining in the material.
引用
收藏
页码:2731 / 2735
页数:5
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