Tailoring Aqueous Solubility of Functionalized Single-Wall Carbon Nanotubes over a Wide pH Range through Substituent Chain Length

Carboxylic acid-functionalized SWNTs prepared via the reaction of an amino acid, NH2(CH2) n CO2H, with fluoronanotubes show similar levels of sidewall functionalization; however, the solubility in water is controlled by the length of the hydrocarbon side chain (i.e., n). The 6-aminohexanoic acid der...

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Veröffentlicht in:	Nano letters 2005-10, Vol.5 (10), p.2001-2004
Hauptverfasser:	Zeng, Liling, Zhang, Lei, Barron, Andrew R
Format:	Artikel
Sprache:	eng
Schlagworte:	Amino Acids - chemistry Aminocaproates Aminocaproic Acid - chemistry Applied sciences Condensed matter: structure, mechanical and thermal properties Electronics Exact sciences and technology Hydrogen-Ion Concentration Microelectronic fabrication (materials and surfaces technology) Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Nanotubes, Carbon - chemistry Physics Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Solubility Solutions Structure of solids and liquids crystallography
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Zusammenfassung:	Carboxylic acid-functionalized SWNTs prepared via the reaction of an amino acid, NH2(CH2) n CO2H, with fluoronanotubes show similar levels of sidewall functionalization; however, the solubility in water is controlled by the length of the hydrocarbon side chain (i.e., n). The 6-aminohexanoic acid derivative is soluble in aqueous solution (0.5 mg mL-1) between pH 4 and 11, whereas the glysine and 11-aminoundecanoic acid derivatives are insoluble across all pH values.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl0514994