Reversible sidewall functionalization of buckytubes
Single-wall fullerene nanotubes have been made soluble in various organic solvents, including chloroform, methylene chloride, and tetrahydrofuran by covalently attaching alkanes to their sidewalls. Sidewall-alkylated nanotubes are obtained by reacting sidewall-fluorinated nanotubes with alkyl magnesium bromides in a Grignard synthesis or by reaction with alkyllithium precursors. Covalent attachment to the sidewalls was confirmed by UV-visible spectroscopy, which is also used to show that the alkane sidewall groups can be removed by oxidizing them in air to recover pristine nanotubes.
Boul, PJ; Liu, J; Mickelson, ET; Huffman, CB; Ericson, LM; Chiang, IW; Smith, KA; Colbert, DT; Hauge, RH; Margrave, JL; Smalley, RE
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