Jiangsu Key Laboratory of Advanced Functional, Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (P.R. China), Fax: (+86) 512-65882052.
Chem Asian J. 2013 Nov;8(11):2714-20. doi: 10.1002/asia.201300798. Epub 2013 Aug 15.
Single-handed, helical, 4,4'-biphenylene-bridged polybissilsesquioxane nanotubes were prepared by using the self-assemblies of a pair of chiral low-molecular-weight gelators as templates. Single-handed, helical, carbon/silica nanotubes were obtained after carbonization of the self-assemblies, and single-handed helical carbonaceous nanotubes were then obtained by removal of silica with aqueous HF. Samples were characterized by using field-emission SEM, TEM, X-ray diffraction, thermogravimetric analysis, Raman spectroscopy, and circular dichroism. The polysilsesquioxane and carbonaceous structures exhibited optical activity. The walls of the carbon/silica and carbonaceous nanotubes were predominantly amorphous carbon. The surface area of the left-handed, helical, carbonaceous nanotubes was 1439 m(2) g(-1), and such materials have potential applications as catalyst supports, chirality sensors, supercapacitor electrodes, and adsorbents.
单手持，螺旋，4,4'-联苯撑桥联多聚倍半硅氧烷纳米管由一对手性低分子量凝胶剂的自组装作为模板制备。自组装碳化后得到单手持，螺旋，碳/硅纳米管，然后用氢氟酸水溶液去除硅得到单手持螺旋碳纳米管。采用场发射扫描电子显微镜、透射电子显微镜、X 射线衍射、热重分析、拉曼光谱和圆二色性对样品进行了表征。聚倍半硅氧烷和碳结构表现出光学活性。碳/硅和碳纳米管的壁主要为无定形碳。左手螺旋碳纳米管的比表面积为 1439 m(2) g(-1)，这些材料在催化剂载体、手性传感器、超级电容器电极和吸附剂等方面具有潜在的应用。
