Nano Research

, Volume 3, Issue 2, pp 103–109

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

Open Access
Research Article

DOI: 10.1007/s12274-010-1014-4

Cite this article as:
Nie, H., Guo, W., Yuan, Y. et al. Nano Res. (2010) 3: 103. doi:10.1007/s12274-010-1014-4


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.


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

Supplementary material

12274_2010_1014_MOESM1_ESM.pdf (1.1 mb)
Supplementary material, approximately 340 KB.

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking UniversityBeijingChina
  2. 2.Institute of Nanochemistry and NanobiologyShanghai UniversityShanghaiChina

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