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Issue 13, 2004
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Covalent modification of vapour-grown carbon nanofibers via direct Friedel–Crafts acylation in polyphosphoric acid

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Abstract

Electrophilic functionalization of vapour-grown carbon nanofibers (VGCNF) was accomplished via Friedel–Crafts acylation with 2,4,6-trimethylphenoxybenzoic acid in polyphosphoric acid using the improved conditions that we previously described. The progress of the reaction was conveniently monitored with FT-IR spectroscopy following the growth of the keto-carbonyl band at 1664 cm−1 associated with the product. In addition to scanning electron microscopic and UV-vis spectroscopic data, the combined results from the elemental analysis and thermogravimetric analysis further suggested that there were 3 arylcarbonyl groups covalently attached to the nanotube structure for every 100 carbon sites. Because of the presence of significant hydrogen content in the starting VGCNF, the covalent attachment of the arylcarbonyl groups most probably occurred at the sp2C–H sites.

Graphical abstract: Covalent modification of vapour-grown carbon nanofibers via direct Friedel–Crafts acylation in polyphosphoric acid

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Publication details

The article was received on 29 Jan 2004, accepted on 22 Apr 2004 and first published on 19 May 2004


Article type: Paper
DOI: 10.1039/B401401D
Citation: J. Mater. Chem., 2004,14, 2052-2056
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    Covalent modification of vapour-grown carbon nanofibers via direct Friedel–Crafts acylation in polyphosphoric acid

    J. Baek, C. B. Lyons and L. Tan, J. Mater. Chem., 2004, 14, 2052
    DOI: 10.1039/B401401D

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