Wen Tao, Shi Jiahua, Zheng Minrui, Varghese Binni, Sow Chorng-Haur, Chan Hardy Sze On
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
J Nanosci Nanotechnol. 2012 Jan;12(1):91-8. doi: 10.1166/jnn.2012.5143.
Polyaniline morphology evolution in toluene has been observed for the first time. Various structures, including one-dimensional open-ended microtubes, three-dimensional solid microspheres and two-dimensional novel solid microplates were controllably synthesized in the same reaction system. The structures obtained were sensitive to oxidant concentration and molar ratio of monomer to oxidant. Solid microplates were mainly formed on the glass beaker wall and bottom, while tubes and spheres were produced in solution by employing reverse micelles as soft templates. Studies on the effect of reaction temperature, mechanical stirring and the addition of more acid were also carried out. FTIR and UV-Vis results showed that the PANI products were in the emeraldine form. The PANI film prepared from spheres exhibited hydrophobic property due to its rough surface covered with nanoscale dots and the large distribution of sphere diameters.
首次观察到聚苯胺在甲苯中的形态演变。在同一反应体系中可控地合成了各种结构，包括一维开口微管、三维实心微球和二维新型实心微板。所得结构对氧化剂浓度和单体与氧化剂的摩尔比敏感。实心微板主要形成在玻璃烧杯壁和底部，而通过使用反胶束作为软模板在溶液中产生管和球。还进行了反应温度、机械搅拌和添加更多酸的影响研究。傅里叶变换红外光谱（FTIR）和紫外可见光谱（UV-Vis）结果表明聚苯胺产物为翡翠盐形式。由微球制备的聚苯胺薄膜由于其表面覆盖有纳米级点且球直径分布较大而表现出疏水性。
