Abstract Single-handed helical tantalum pentoxide nanotubes with inner chiral organic self-assemblies were prepared through a supramolecular templating approach. After carbonization and removal of tantalum pentoxide, single-handed twisted carbonaceous nanotubes were obtained. The handedness of the carbonaceous nanotubes followed that of the tantalum pentoxide nanotubes. The carbonaceous nanotubes were formed due to the adsorption of the organic self-assemblies on the inner surfaces of the tantalum pentoxide nanotubes and the shrinkage of organic self-assemblies during the drying process and subsequently carbonization. The X-ray diffraction and Raman spectroscopy characterizations indicated that the carbon was amorphous. The circular dichroism spectra indicated that the twisted carbonaceous nanotubes exhibited optical activity. The elemental analysis showed that these carbonaceous nanotubes were N-doped. These N-doped carbonaceous materials might find applications as catalysts and chirality sensors.

中文翻译：

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手性有机自组装体碳化制备手性碳纳米管

摘要 通过超分子模板法制备了具有内部手性有机自组装的单手螺旋五氧化二钽纳米管。碳化去除五氧化二钽后，得到单手扭曲的碳质纳米管。碳质纳米管的旋向性跟随五氧化二钽纳米管的旋向性。碳质纳米管是由于有机自组装体吸附在五氧化二钽纳米管的内表面上以及在干燥过程和随后的碳化过程中有机自组装体的收缩而形成的。X 射线衍射和拉曼光谱表征表明碳是无定形的。圆二色光谱表明扭曲的碳质纳米管表现出光学活性。元素分析表明这些碳质纳米管是N掺杂的。这些 N 掺杂的碳质材料可能会用作催化剂和手性传感器。