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木文用FT-IR、ESR、XPS等研究了聚苯胺的质子酸掺杂机制。结果表明聚苯胺掺杂时的质子化反应优先发生在分子链中的醌亚胺结构单元的氮原子上,并产生了分子内氧化还原反应而形成阳离子自由基。质子所带的电荷由于共轭作用能较好地离域到邻近苯环及对位氮原子上。
In this paper, FT-IR, ESR and XPS were used to study the doping mechanism of polyaniline. The results show that the protonation reaction of polyaniline preferentially occurs on the nitrogen atom of the structural unit of the quinone imine in the molecular chain and produces an intramolecular redox reaction to form a cationic radical. The charge of the proton can be delocalized to the adjacent benzene ring and the para-nitrogen atom due to the conjugation.