Tailoring aqueous solubility of functionalized single-wall carbon nanotubes over a wide pH range through substituent chain length.
نویسندگان
چکیده
Carboxylic acid-functionalized SWNTs prepared via the reaction of an amino acid, NH2(CH2)nCO2H, 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.
منابع مشابه
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Single-walled carbon nanotubes (SWCNTs) were solubilized by microplasma in pH-controlled aqueous solution. The SWCNTs were highly dispersed and solubilized in water under higher pH condition (pH > 9). Surface of the SWCNT was functionalized by carboxylate ion (-COO) and negatively charged during the microplasma treatment. A possible mechanism of water-solubility of SWCNT was briefly discussed.
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ورودعنوان ژورنال:
- Nano letters
دوره 5 10 شماره
صفحات -
تاریخ انتشار 2005