ABSTRACT In this work, poly(3-hexylthiophene) (P3HT) nanocomposites with different mass percentages of TiO2 nanoparticles (NPs) (1.0, 2.0 and 5.0% wt.) were prepared by in-situ polymerization to assess the effects of NPs on the physical and chemical properties of the P3HT polymer. Green TiO2 NPs in the anatase crystalline phase were obtained by microwave-assisted synthesis. Transmission electron microscopy images showed the presence of submicron agglomerates of TiO2 NPs inserted in the P3HT matrix. Cyclic voltammograms evidenced a quasi-reversible behavior at a 50 mV s-1 sweep rate for all samples, with the P3HT-TiO2 nanocomposite exhibiting a higher oxidation potential than P3HT. The nanocomposite containing 2.0% wt. TiO2 exhibited the highest thermal stability and the highest potential for application in photovoltaic devices due to its regiochemistry, which improved the charge transport properties of the P3HT polymer.

中文翻译：

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原位聚合制备的聚（3-己基噻吩）/二氧化钛纳米复合材料：结构、形态和电化学性能

摘要 在这项工作中，通过原位聚合制备了具有不同质量百分比 TiO2 纳米颗粒 (NPs)（1.0、2.0 和 5.0% wt.）的聚（3-己基噻吩）（P3HT）纳米复合材料，以评估 NPs 对纳米颗粒的影响。 P3HT聚合物的物理和化学性质。通过微波辅助合成获得锐钛矿晶相中的绿色 TiO2 NP。透射电子显微镜图像显示存在插入 P3HT 基质中的 TiO2 NPs 亚微米团聚体。循环伏安图证明了所有样品在 50 mV s-1 扫描速率下的准可逆行为，P3HT-TiO2 纳米复合材料表现出比 P3HT 更高的氧化电位。含有 2.0% wt 的纳米复合材料。