Article Title

PEGylation of double-walled carbon nanotubes for increasing their solubility in water

Authors

Haiyu Nie, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Wei Guo, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Yuan Yuan, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Zengpei Dou, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Zujin Shi, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Zhen Liu, Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
Haifang Wang, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
Yuanfang Liu, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China

Keywords

Double-walled carbon nanotubes (DWNTs), functionalization, polyethylene glycol (PEG), water soluble

Abstract

Polyethylene glycol (PEG) functionalized double-walled carbon nanotubes (DWNTs) have been synthesized by a [2 + 1] cycloaddition reaction and characterized by transmission electron microscopy, atomic force microscopy, Raman spectroscopy, thermal gravimetric analysis, and UV–visible spectroscopy. Functionalization affords a large increase in the aqueous solubility of DWNTs. The saturated concentrations of DWNTs functionalized with diazido-terminated PEG800 (with a molecular weight of 800) and azido-terminated PEG750 monomethylether (with a molecular weight of 750) are very similar—0.36 and 0.37 mg/mL (DWNTs equivalent concentration), respectively.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-010-1014-4

Publisher

Tsinghua University Press

Recommended Citation

Haiyu Nie,Wei Guo,Yuan Yuan,Zengpei Dou,Zujin Shi,Zhen Liu,Haifang Wang,Yuanfang Liu, PEGylation of double-walled carbon nanotubes for increasing their solubility in water. NanoRes.2010, 3: 103–109