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首页> 外文期刊>Journal of Composites Science >Chromatic Conductive Polymer Nanocomposites of Poly (p-Phenylene Ethynylene)s and Single-Walled Carbon Nanotubes
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Chromatic Conductive Polymer Nanocomposites of Poly (p-Phenylene Ethynylene)s and Single-Walled Carbon Nanotubes

机译：聚（对亚苯基乙炔基）S和单壁碳纳米管的彩色导电聚合物纳米复合材料

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摘要

We report on dispersions and thin films of chromatic conductive nanocomposites of poly(p-phenylene ethynylene)s (PPEs) and single-walled carbon nanotubes (SWNTs) generated via solution mixing. The linear, conjugated PPEs with dialkyl- and dialkyloxy-side chain groups are shown to debundle and disperse high concentration (up to 2.5 mg/mL) SWNTs in various organic solvents. The solubilization of SWNTs and PPE wrapping is accompanied with the change in the solution color. Ultraviolet visible absorption spectra of nanocomposite solutions demonstrate a new absorption peak at a higher wavelength, supporting the observed chromatism. Fluorescence spectra of nanocomposite solutions display significant quenching of the fluorescence intensity and the Stern– Volmer model is used to analyze fluorescence quenching. Electron microscopy of the chromatic solid films of high mass fraction PPE/SWNT nanocomposites obtained by vacuum filtration reveals the debundled SWNTs in the PPE matrix. The tensile strength and Young’s modulus of these PPE/SWNT nanocomposite films are as high as 150 MPa and 15 GPa, respectively. The composite films exhibit remarkably high conductivities, ranging from ~1000 S/m to ~10,000 S/m for 10 wt% and 60 wt% SWNT nanocomposites, respectively.
机译：我们报道了通过溶液混合产生的聚（对亚苯基乙炔乙烯）S（PPES）和单壁碳纳米管（SWNT）的色彩导电纳米复合材料的分散体和薄膜。用二烷基和二烷氧基侧链基团的线性缀合的PP进行，在各种有机溶剂中脱落和分散高浓度（高达2.5mg / ml）的SWNT。 SWNT和PPE包装的溶解伴随着溶液颜色的变化。纳米复合材料溶液的紫外易可见吸收光谱在较高波长下表现出新的吸收峰，支持观察到的色谱。纳米复合溶液的荧光光谱显示出荧光强度的显着猝灭，船尾模型用于分析荧光猝灭。通过真空过滤得到的高质量级分PPE / SWNT纳米复合材料的电子显微镜显微镜显微镜揭示了PPE基质中的被释放的SWNT。这些PPE / SWNT纳米复合膜的拉伸强度和杨氏模量分别高达150MPa和15GPa。复合薄膜分别具有显着高的导电性，范围为10wt％和60wt％的SWNT纳米复合材料的〜1000 s / m至约10,000 s / m。

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