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174. 


Enhanced π-π interactions between a C60 fullerene and a buckle bend on a double-walled carbon nanotube



S. Gorantla, S. Avdoshenko, F. Börrnert, A. Bachmatiuk, M. Dimitrakopoulou, F. Schäffel, R. Schönfelder, J. Thomas, T. Gemming, J. H. Warner, G. Cuniberti, J. Eckert, B. Büchner, and M. H. Rümmeli

Nano Research 3, 92 (2010)

In situ low-voltage aberration corrected transmission electron microscopy (TEM) observations of the dynamic entrapment of C60 molecule in the saddle of a bent double-walled carbon nanotube is presented. The fullerene interaction is non-covalent, suggesting that enhanced π-π interactions (van der Waals forces) are responsible. Classical molecular dynamics calculations confirm that the increased interaction area associated with a buckle is sufficient to trap a fullerene. Moreover, they show hopping behavior in agreement with our experimental observations. Our findings further our understanding of carbon nanostructure interactions, which are important in the rapidly developing field of low-voltage aberration corrected TEM and nano-carbon device fabrication.



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doi absolute link10.1007/s12274-010-1012-6
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