Characterization of single-handed,coiled,carbonaceous,tubular nanoribbons  

作　　者：Dan Liu Yong-Min Guo Yi Li Bao-Zong Li 

机构地区：[1]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

出　　处：《Chinese Chemical Letters》2014年第6期879-882,共4页中国化学快报（英文版）

基　　金：supported by Natural Science Foundation of Jiangsu Province(No.BK2011354);the Priority Academic Program Development of Jiangsu High Education Institutions(PAPD);the National Natural Science Foundation of China(Nos.21104053, 21071103 and 21074086)

摘　　要：Left-handed, coiled, 4,4＇-biphenylene bridged polybissilsesquioxane, tubular nanoribbons were prepared according to the published literature. After carbonization and removal of silica using HF aqueous solution, left-handed, coiled, carbonaceous, tubular nanoribbons were obtained. The left- handed, coiled, carbonaceous, tubular nanoribbons were characterized using field-emission scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, Raman spectropho- tometer, diffuse reflectance circular dichroism （DRCD）, and N2 adsorptions. Micropores were formed due to the removal of silica. The nitrogen BET surface area is 1727 m2/g. A broad, positive DRCD signal, identified at 400-800 rim, indicates the carbonaceous, tubular nanoribbons exhibit optical activity. The helical pitch is proposed to play an important role in the position of the DRCD signal.Left-handed, coiled, 4,4＇-biphenylene bridged polybissilsesquioxane, tubular nanoribbons were prepared according to the published literature. After carbonization and removal of silica using HF aqueous solution, left-handed, coiled, carbonaceous, tubular nanoribbons were obtained. The left- handed, coiled, carbonaceous, tubular nanoribbons were characterized using field-emission scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, Raman spectropho- tometer, diffuse reflectance circular dichroism （DRCD）, and N2 adsorptions. Micropores were formed due to the removal of silica. The nitrogen BET surface area is 1727 m2/g. A broad, positive DRCD signal, identified at 400-800 rim, indicates the carbonaceous, tubular nanoribbons exhibit optical activity. The helical pitch is proposed to play an important role in the position of the DRCD signal.

关 键 词：NANOPARTICLES Carbon/silica Sol-gel preparation Structural 

分 类 号：O613.71[理学—无机化学]