Charge transport and electron localization in polyaniline derivatives.
Charge transport and electron localization in polyaniline derivatives.
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聚苯胺衍生物中的电荷传输和电子局域化。
DOI：
10.1103/physrevb.49.13983
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Wan
中科院分区：
文献类型：
--
作者：
Pinto;Kahol;Mccormick;Dalal;Wan
报道了聚苯胺及其衍生物聚邻甲苯胺、聚邻乙基苯胺和聚邻丙基苯胺的电导率、磁化率和电子自旋共振研究。结果表明，在聚合物骨架的C 6环上取代基的存在会导致电导率降低，泡利磁化率降低，居里自旋数增加.也反映了这些功能是电子自旋共振线的形状，从洛伦兹聚苯胺高斯聚（邻丙基苯胺）。这些结果被解释为增加链间无序引起的电子本地化。此外，电子-电子相关的证据，提出了聚（邻丙基苯胺）。
Electrical conductivity, magnetic susceptibility, and electron-spin-resonance studies are reported in polyaniline and its derivatives poly(o-toluidine), poly(o-ethylaniline), and poly(o-propylaniline). It is shown that substituents on the ${\mathrm{C}}_{6}$ rings of the polymer backbone lead to decreased conductivity, decreased Pauli susceptibility, and an increased number of Curie spins. Also reflecting these features are electron-spin-resonance line shapes, which transform from Lorentzian for polyaniline toward Gaussian for poly(o-propylaniline). These results are interpreted in terms of increased electron localization caused by increased interchain disorder. Furthermore, evidence of electron-electron correlations is presented for poly(o-propylaniline).