Department of Chemistry, University of Nottingham, Nottingham, UK.
Nanoscale. 2012 Dec 7;4(23):7540-8. doi: 10.1039/c2nr32571c.
A range of mono- and bis-functionalised fullerenes have been synthesised and inserted into single-walled carbon nanotubes. The effect of the size and shape of the functional groups of the fullerenes on the resultant 1D arrays formed within the nanotubes was investigated by high resolution transmission electron microscopy and X-ray diffraction. The addition of non-planar, sterically bulky chains to the fullerene cage results in highly ordered 1D structures in which the fullerenes are evenly spaced along the internal nanotube cavity. Theoretical calculations reveal that the functional groups interact with neighbouring fullerene cages to space the fullerenes evenly within the confines of the nanotube. The addition of two functional groups to opposite sides of the fullerene cages results in a further increase in the separation of the fullerene cages within the nanotubes at the cost of lower nanotube filling rates.
已经合成了一系列单官能化和双官能化的富勒烯，并将其插入单壁碳纳米管中。通过高分辨率透射电子显微镜和 X 射线衍射研究了富勒烯官能团的大小和形状对纳米管内形成的一维阵列的影响。在富勒烯笼中添加非平面、空间位阻较大的链导致高度有序的一维结构，其中富勒烯均匀地分布在纳米管的内部空腔中。理论计算表明，官能团与相邻的富勒烯笼相互作用，从而在纳米管的限制范围内均匀地隔开富勒烯。在富勒烯笼的相对两侧添加两个官能团会导致纳米管内富勒烯笼的间距进一步增加，但代价是纳米管的填充率降低。
