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首先用硅烷偶联剂(KH550)对所制备粒径在100 nm以下的纳米ZnO进行表面修饰(M-ZnO),然后在弱磁场(0.4 T)下乙醇/水/十二烷基苯磺酸(DBSA)体系中原位聚合分别制备了重均分子量达3×104的聚苯胺(PANI)及聚苯胺/纳米ZnO复合材料.红外分析表明纳米ZnO的加入使聚苯胺的特征峰向低波数方向移动;溶解性测试表明聚苯胺及其复合材料在氯仿和N-甲基吡咯烷酮中均有较高的溶解度(高于80%);X-射线衍射表明磁场能有效地改善聚苯胺主链的规整性,使聚苯胺分子链有更好离域的π电子体系;M-ZnO的引入显著地提高了PANI的电导率(可达220 S/m),同时具有较好的透光性(80%);这表明PANI/纳米ZnO复合材料在柔性光电器件领域具有潜在的应用价值.
Firstly, the surface modification (M-ZnO) of nano-sized ZnO with particle size below 100 nm was carried out with a silane coupling agent (KH550), and then ethanol / water / dodecyl benzene sulfonic acid (PANI) and polyaniline / nano-ZnO composite materials were prepared by in-situ polymerization in DBSA system.The results of IR showed that the addition of nano-ZnO shifted the polyaniline peak to the low wave number Solubility tests showed that polyaniline and its composites have higher solubility (above 80%) in both chloroform and N-methylpyrrolidone. X-ray diffraction shows that the magnetic field can effectively improve the regularity of polyaniline backbone , Which makes the polyaniline molecular chain have a better delocalization π-electron system; the introduction of M-ZnO significantly improves the conductivity of PANI (up to 220 S / m), and has better transparency (80%); This indicates that PANI / nano-ZnO composite has potential applications in the field of flexible optoelectronic devices.