Studies of thermal decay of electropolymerized polypyrrole using in situ surface-enhanced Raman spectroscopy

Yu Chuan Liu, Kuang Hsuan Yang, Li Huei Lin, Jeng Feng Tsai

研究成果: 雜誌貢獻文章同行評審

17 引文 斯高帕斯(Scopus)

摘要

In this work, the thermal degradation of polypyrrole (PPy) films was investigated by using in situ surface-enhanced Raman spectroscopy (SERS) for the first time. The results indicate that the decay of PPy in conductivity can be ascribed to the loss in oxidation degree and to the shorter conjugation length of PPy upon heating samples from 25 to 75 °C. Continuously raising the temperature of the sample from 75 to 125 °C results in serious decay. The oxidation degree of PPy is significantly decreased correspondingly. However, the peak assigned to the C{double bond, long}C backbone stretching becomes broader due to the thermal decomposition of PPy. At temperatures of samples higher than 125 °C, PPy films lose their conducting properties and no characteristic peaks of oxidized PPy related to the oxidation degrees can be observed. Moreover, the peak of the C{double bond, long}C backbone stretching completely disappear due to the complete decomposition of PPy.

原文英語
頁(從 - 到)161-164
頁數4
期刊Electrochemistry Communications
10
發行號1
DOIs
出版狀態已發佈 - 一月 2008
對外發佈

ASJC Scopus subject areas

  • 化學工程 (全部)
  • 分析化學
  • 電化學

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