Preparation and Characterization of Singlehanded Helical Carbonaceous Nanofibers using 1,4-Phenylene Bridged Polybissilsesquioxanes
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2016年第5期
论文作者：肖泽丽 GUO Yongmin 李宝宗 LI Yi
文章页码：1149 - 1154
摘 要：Single-handed helical carbonaceous materials attracted much attention for varieties of potential applications. Herein, single-handed helical 1, 4-phenylene bridged polybissilsesquioxane nanofibers were prepared through a supramolecular templating approach using a pair of enantiomers. After carbonization at 700 ℃ for 2.0 h and removal of silica using HF aqueous solution, single-handed helical carbonaceous nanofibers were obtained. The obtained samples were characterized using the field-emission scanning electron microscopy, transmission electron microscopy, N2 sorptions, X-ray diffraction, Raman spectroscopy and diffuse reflectance circular dichroism（DRCD）. The Raman spectrum indicated that the carbon was amorphous. The DRCD spectra indicated that the carbonaceous nanofibers exhibited optical activity. The surface area of the left-handed helical carbonaceous nanofibers was 907 m2/g. Such material has potential applications as chirality sensor and supercapacitor electrode.
肖泽丽，GUO Yongmin，李宝宗，LI Yi
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
摘 要：Single-handed helical carbonaceous materials attracted much attention for varieties of potential applications. Herein, single-handed helical 1, 4-phenylene bridged polybissilsesquioxane nanofibers were prepared through a supramolecular templating approach using a pair of enantiomers. After carbonization at 700 ℃ for 2.0 h and removal of silica using HF aqueous solution, single-handed helical carbonaceous nanofibers were obtained. The obtained samples were characterized using the field-emission scanning electron microscopy, transmission electron microscopy, N2 sorptions, X-ray diffraction, Raman spectroscopy and diffuse reflectance circular dichroism（DRCD）. The Raman spectrum indicated that the carbon was amorphous. The DRCD spectra indicated that the carbonaceous nanofibers exhibited optical activity. The surface area of the left-handed helical carbonaceous nanofibers was 907 m2/g. Such material has potential applications as chirality sensor and supercapacitor electrode.
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