Abstract Para-aminodiphenylamine (p-ADPA) was successfully polymerized by simple, economical and environmentally improved procedure. Magnetite nanoparticles (Fe3O4 NPs) were found to successfully catalyze the oxidation of p-ADPA in the presence of hydrogen peroxide (H2O2), an eco-friendly and clean oxidant, with a very small amount of ammonium peroxydisulfate (APS) as an initiator. In this manner, the amount of by-products occurring during the reaction is drastically reduced. The oxidation of p-ADPA proceeded also in the absence of Fe3O4 NPs, but far more slowly than the catalyzed process. The influence of the mass ratio Fe3O4NPs/p-ADPA on the properties of products was systematically studied by different characterization techniques. Spectroscopic measurements (UV-Vis-NIR, FTIR, Raman, EPR) indicate that the polymerization products are polyaniline emeraldine salt-like polymers and their measured electrical conductivity is one of the highest values reported in the literature for p-ADPA oligomerization/polymerization products (1.8∙10-2 S cm-1). X-ray powder diffraction (XRPD) measurements revealed highly crystalline structure of Poly(p-ADPA) samples synthesized with Fe3O4 NPs, while scanning electron microscopy (SEM) showed layered and prismatic-shaped particles as prevailing in their morphology.

中文翻译：

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磁铁矿纳米颗粒催化合成导电聚（对氨基二苯胺）

摘要 对氨基二苯胺（p-ADPA）通过简单、经济且环保的改进工艺成功聚合。发现磁铁矿纳米粒子 (Fe3O4 NPs) 在过氧化氢 (H2O2) 存在下成功催化 p-ADPA 的氧化，过氧化氢 (H2O2) 是一种环保且清洁的氧化剂，并以极少量的过硫酸铵 (APS) 作为引发剂。以这种方式，反应过程中出现的副产物的量大大减少。p-ADPA 的氧化也在没有 Fe3O4 NPs 的情况下进行，但比催化过程慢得多。通过不同的表征技术系统地研究了Fe3O4NPs/p-ADPA质量比对产品性能的影响。光谱测量（UV-Vis-NIR、FTIR、拉曼、EPR) 表明聚合产物是聚苯胺翠绿亚胺盐类聚合物，其测量的电导率是文献中报道的 p-ADPA 低聚/聚合产物的最高值之​​一 (1.8∙10-2 S cm-1)。X 射线粉末衍射 (XRPD) 测量显示用 Fe3O4 NPs 合成的聚 (p-ADPA) 样品的高度结晶结构，而扫描电子显微镜 (SEM) 显示层状和棱柱形颗粒在其形态中占主导地位。