磺酸盐
佩多:嘘
磺酸
溶剂
苯乙烯
高分子化学
共聚物
氢键
分子
化学
电导率
X射线光电子能谱
纳米团簇
化学工程
材料科学
聚合物
有机化学
物理化学
钠
工程类
作者
Chaima Tounakti,Philippe Decorse,Fayçal Kouki,Philippe Lang
摘要
Abstract The treatment of water‐soluble PEDOT:PSS copolymer film by DMSO or DMF considerably enhances its electrical conductivity. The mechanism leading to a new molecular conformation in the PEDOT:PSS layer was investigated by in situ ATR, PM‐IRRAS and XPS spectroscopies. The release of PSS chains containing excess [Na + , (−Φ‐SO 3 − )‐] and (−Φ‐SO 3 H)‐] moieties by the solvent treatment and the implications of this process are discussed. By comparison with a NaPSS/HPSS adduct, the essential role of the conformational reorganization of the poly(styrene sulfonic/sulfonate) chains via hydrogen bonds between SO 3 H functions is demonstrated. Residual water molecules play a fundamental role both in the removal of excess sulfonates or sulfonic groups, the separation of the (Na, H, PSS) chains, which can then be extracted, and the establishment of the suitable PEDOT conformation.
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