Direct evidence for covalent functionalization of carbon nanohorns by high-resolution electron microscopy imaging of C60 conjugated onto their skeleton
Direct evidence for covalent functionalization of carbon nanohorns by high-resolution electron microscopy imaging of C60 conjugated onto their skeleton
复制标题
通过对碳纳米角骨架上缀合的 C60 进行高分辨率电子显微镜成像，得到碳纳米角共价功能化的直接证据
DOI：
10.1016/j.carbon.2012.04.035
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发表时间：
2012
期刊：
影响因子：
10.9
通讯作者：
N. Tagmatarchis
中科院分区：
文献类型：
--
作者：
N. Karousis;Y. SATO;K. Suenaga;N. Tagmatarchis
以带有胺基的乙二醇链为末端，用芳基单元官能化的碳纳米角（CNH）与带有游离羧酸基团的改性C60缩合。CNH杂化材料中C60的高分辨透射电子显微镜（HR-TEM）成像给出了CNH共价官能化的直接证据。此外，还发现C60即使在长时间暴露于电子束后也不受影响。最后，通过连续的HR-TEM图像监测连接乙二醇链的波动，进一步证明了连接两个碳纳米结构的共价键的稳定性。
Carbon nanohorns (CNHs) functionalized with aryl units, possessing ethylene glycol chains terminated to amine groups, were condensed with modified C60carrying a free carboxylic acid group. Direct evidence for the covalent functionalization of CNHs was given by high-resolution transmission electron microscopy (HR-TEM) imaging of C60present in that CNH hybrid material. In addition, it was found that C60remained unaffected even after prolonged exposure to the electron beam. Finally, monitoring the wave motion of the connecting ethylene glycol chains, through sequential HR-TEM images, further proved the stability of the covalent bond that links the two carbon nanostructures.