Application of simultaneous monitoring of the in situ impedance and optical changes on the redox transformation of two polythiophenes: Direct evidence for their non-identical conductance-charge carrier correlation
Application of simultaneous monitoring of the in situ impedance and optical changes on the redox transformation of two polythiophenes: Direct evidence for their non-identical conductance-charge carrier correlation
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同时监测原位阻抗和光学变化在两种聚噻吩氧化还原转化中的应用：它们不相同的电导-电荷载流子相关性的直接证据
DOI：
10.1016/j.elecom.2010.05.001
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发表时间：
2010
影响因子：
5.4
通讯作者：
C. Visy
中科院分区：
文献类型：
--
作者：
P. Tóth;Emese Peintler;C. Visy
采用同步紫外-可见-近红外光谱电化学和交流阻抗技术，对聚（3,4-乙烯二氧噻吩）（PEDOT）和聚（3-辛基噻吩）（POT）的氧化还原转化进行了研究和比较。同一薄膜中不同载流子的电导率和吸光度的增减速率的同时变化，直接和无可置疑地证明了在水溶液中合成的PEDOT是单阳离子的，而在POT中，双阳离子的部分主要负责导电聚合物的命名性质的发展。这种载流子作用的差异可以部分地观察到在水溶液和乙腈（AN）溶液中制备的PEDOTs。
The redox transformation of poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(3-octylthiophene) (POT) has been studied and compared by combining simultaneous in situ UV–Vis–NIR spectroelectrochemical and ac impedance techniques. Simultaneous changes of the conductance and the rate of the absorbance increase/decrease of the optically different charge carriers in the selfsame film gave direct and unquestionable evidence for that in PEDOT synthesised in aqueous solution the mono-cationic, while in POT the di-cationic segments are primarily responsible for the development of the name-giving property of conducting polymers. This difference in the role of the charge carriers could be partially observed between PEDOTs prepared in aqueous and acetonitrile (AN) solutions.