可溶性笼形倍半硅氧烷基共轭聚合物作为一种高效的单壁碳纳米管分散剂  

Silsesquioxane-Polythiophene Hybrid Copolymer as an Efficient Modifier for Single-walled Carbon Nanotubes

作　　者：胡小勇 高树曦 张磊 张静斐 麦裕良 廖兵 Hu Xiaoyong;Gao Shuxi;Zhang Lei;Zhang Jingfei;Mai Yuliang;Liao Bing(Guangdong Research institute of Petrochemical and fine Chemical Engineering,Provincial Key Laboratory of Industrial Surfactant,Guangzhou 510665,China)

机构地区：[1]广东省石油与精细化工研究院广东省工业表面活性剂重点实验室

出　　处：《广东化工》2020年第2期1-3,10,共4页Guangdong Chemical Industry

基　　金：广东省科学院实施创新驱动发展能力建设专项资金项目(2018GDASCX-1011)

摘　　要：利用一种分子内非均质性的星型结构的笼形倍半硅氧烷-聚噻吩杂化共聚物功能化单壁碳纳米管(SWNTs),并通过多种手段充分表征分散SWNTs的性能。结果表明,这种星型杂化共轭聚合物与其线型类似物相比,具有更高效的稳定SWNTs能力。疏水性的笼形倍半硅氧烷核心和聚噻吩链段锚定在疏水的碳纳米管表面,同时水溶性的柔性链段向溶液中伸展并且共轭链段与碳纳米管表面形成的共轭堆叠效应极大地增加聚合物与碳管之间的黏附力,这些非共价作用力赋予SWNTs分散体空间稳定性。SWNTs在水溶液中溶解性的改善也极大地提升了SWNTs复合材料的可加工性,有利于制备柔性透明电活性的薄膜材料。由此,这种笼形倍半硅氧烷-聚噻吩杂化共聚物在柔性光电设备领域具有极高的应用前景。One silsesquioxane-polythiophene hybrid copolymer,combined star-like stucture and intramolecular heterogeneity,was used to stabilize Single-Walled Carbon Nanotubes;The Stabilizing effect was sufficiently characterized via various methods.According to the exploration and characterization results,the hybrid copolymer was much more efficient at modifying SWNTs than its linear analogues in aqueous solution.The hydrophobic silsesquioxane core and PEDOT chains could locally anchor to the surface of the nanotubes,while the soluble flexible copolymer chains extended into the solution and rigid conjugated chains provided someπ–πstacking effect to enhance adhesive force with the conjugated structure of the carbon nanotube,imparting steric stabilization to nanotube dispersion.These non-covalent interaction with SWNTs and solubility in aqueous solution improved the electrochemical characteristics of modified-SWNT composite and availed for the preparation of flexible and transparent electroactive film.Accordingly,this kind of silsesquioxane-polythiophene hybrid copolymer will be forward to apply in the assembling of flexible optoelectronic devices.

关 键 词：笼形倍半硅氧烷-聚噻吩杂化共聚物 非共价作用 可溶共轭聚合物 柔性光电材料 

分 类 号：TQ[化学工程]