聚(N,N-二甲基苯胺)的质子化研究

Studies on Protonation of Poly (N,N-dimethylaniline)

研究了聚（N，N-二甲基苯胺）在硫酸和三氯醋酸水溶液中的质子化行为，对其吸收光谱和核磁共振谱的研究发现，聚（N，N-二甲基苯胺）在不同酸度下存在两种质子化状态：在强酸体系中质子加在侧基氮原子上，在中等酸性体系中质子加在主链的苯环上．

In this paper, we studied the protonation of poly(N,N-dimethylaniline) (PDMA)in two different acid media (sulfuric acid and trichloroacetic acid). Using UV-Vis and 1H NMR measurements, we found that PDMA could present two types of protonated states,which depends on the acidity. It can be concluded that protons were added on nitrogen atoms of substituent in the concentrated acid but on benzene ring of main chain in the moderate acid solution.