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以N-羟基琥珀酰亚胺(NHS)活化聚L-谷氨酸的羧基并与苯胺四聚体的氨基缩合,得到了以可生物降解的聚谷氨酸为主链,具有电活性的苯胺四聚体为侧链的新型接枝聚合物.用1H-NMR、质谱分析、光谱分析的方法确定了化合物的结构.侧链羧基的存在使聚合物可以溶解于碱性的缓冲溶液中.对聚合物的电化学性质进行了紫外及循环伏安的表征,研究结果表明,接枝后的聚合物具有与苯胺低聚体相似的可逆的氧化还原过程并可被质子酸掺杂,表现出良好的电化学活性.同时,以定量紫外吸收及元素分析的方法分别测定了聚合物的接枝率.实验中通过控制反应的投料比可以使苯胺四聚体的接枝率达到40%以上,并对聚合物的自掺杂现象进行了讨论.
N-hydroxysuccinimide (NHS) activated poly-L-glutamic acid carboxyl group and aniline amine tetramer condensation, obtained biodegradable polyglutamic acid as the main chain, aniline with electro-activity Tetramer side chain of the new grafted polymer.H1-NMR, mass spectrometry, spectral analysis of the structure of the compounds to determine the existence of the side-chain carboxyl polymer can be dissolved in alkaline buffer solution. 对The electrochemical properties of the polymer were characterized by UV and cyclic voltammetry. The results show that the grafted polymer has a reversible redox process similar to that of the aniline oligomer and can be doped with proton acid, showing good performance The electrochemical grafting degree of the polymer was determined by quantitative UV absorption and elemental analysis.The graft ratio of aniline tetramers was over 40% The self-doping of polymers is discussed.