Diameter-Selective Solubilization of Single-Walled Carbon Nanotubes by Reversible Cyclic Peptides
Journal of the American Chemical Society2005Vol. 127(26), pp. 9512–9517
Citations Over TimeTop 10% of 2005 papers
Alfonso Ortiz-Acevedo, Hui Xie, Vasiliki Zorbas, William M. Sampson, Alan Β. Dalton, Ray H. Baughman, Rockford K. Draper, Inga H. Musselman, Gregg R. Dieckmann
Abstract
We have utilized reversible cyclic peptides (RCPs)-peptides containing alternating l- and d-amino acids with N- and C-termini derivatized with thiol-containing groups allowing reversible peptide cyclization-to solubilize and noncovalently functionalize carbon single-walled nanotubes (SWNTs) in aqueous solution. Solubilization occurs through wrapping of RCPs around the circumference of a SWNT, followed by the formation of head-to-tail covalent bonds, yielding closed rings on the nanotubes. By controlling the length of the RCPs, we have demonstrated limited diameter-selective solubilization of the SWNTs as revealed by UV/vis/NIR and Raman spectroscopies, as well as atomic force microscopy.
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