Synthesis of Water-Soluble PEGylated Single-Walled Carbon Nanotubes
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- 作者：Jayanta Chattopadhyay ; Felipe de Jesus Cortez ; Soma Chakraborty ; Nigel K. H. Slater ; W. E. Billups
- 刊名：Chemistry of Materials
- 出版年：2006
- 出版时间：December 12, 2006
- 年：2006
- 卷：18
- 期：25
- 页码：5864 - 5868
- 全文大小：353K
- 年卷期：v.18,no.25(December 12, 2006)
- ISSN：1520-5002
文摘
Carbon nanotube salts prepared by treating single-wall carbon nanotubes (SWNTs) with lithium inliquid ammonia react with 
-bromocarboxylic acids to yield sidewall-derivatized SWNTs. These can bereacted with amine-terminated polyethyleneglycol (PEG) chains (e.g., H2N-mPEG-OMe, MW = 5000Da) to yield water-soluble PEGylated SWNTs. Short nanotubes (average length ~ 60 nm) functionalizedby PEGylation of the carboxylic acid groups at the end of the nanotubes exhibit greater solubility inwater than the longer (average length ~ 300 nm) sidewall-PEGylated pristine nanotubes.
-bromocarboxylic acids to yield sidewall-derivatized SWNTs. These can bereacted with amine-terminated polyethyleneglycol (PEG) chains (e.g., H2N-mPEG-OMe, MW = 5000Da) to yield water-soluble PEGylated SWNTs. Short nanotubes (average length ~ 60 nm) functionalizedby PEGylation of the carboxylic acid groups at the end of the nanotubes exhibit greater solubility inwater than the longer (average length ~ 300 nm) sidewall-PEGylated pristine nanotubes.