聚-2-氨基吡啶电化学合成及性质

报导了在 0.43 mol•dm－3 C6H6N2和0.01 mol•dm－3 NaOH中用循环伏安法合成聚-2-氨基吡啶. 聚-2-氨基吡啶在1.0 mol•dm－3 ZnCl2(pH=4.99)溶液中的循环伏安图上有三对氧化-还原峰.旋转环-盘实验的结果表明,在 2-氨基吡啶聚合的初期有中间体生成.由红外光谱可知，聚-2-氨基吡啶具有头-尾相接的结构.聚-2-氨基吡啶平均粒子大小约893 nm， 平均粒子间距约 255 nm. 由聚-2-氨基吡啶正极和锌负极及2.5 mol•dm－3 ZnCl2溶液和 3.0 mol•dm－3 NH4Cl (pH=5.5) 溶液构成的电池，其放电曲线类似于Li-SOCl2, 放电曲线的中间区域非常平稳.

Synthesis and Properties of Poly-2-aminopyridine

Poly-2-aminopyridine was synthesized using potential cycling in the solution of 0.43 mol•dm－3 2-aminopyridine and 0.01 mol•dm－3 NaOH. There are three pairs of redox peaks on the cyclic voltammogram of poly-2-aminopyridine in the solution of 1.0 mol•dm－3 ZnCl2 (pH=4.99). The experiments of rotating ring-disk electrode(RRDE)indicate that an intermediate is generated in the initiation of polymerization. The IR spectra indicate that poly-2-aminopyridine has head-to-tail structure. According to the results of atom force microscope the average particle size of poly-2-aminopyridine is about 893.4 nm, and the average distance between particles is about 255 nm. The discharge behavior of the battery consisting poly-2-aminopyridine as cathode, and zinc as anode in an electrolytic solution of 2.5 mol•dm－3 ZnCl2＋3.0 mol•dm－3 NH4Cl (pH=5.5) is very similar to that of the battery of Li-SOCl2. The discharge curve is very flat in the middle region.