Nano Research

, Volume 3, Issue 2, pp 103–109

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 EngineeringPeking University
  • Wei Guo
    • Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking University
  • Yuan Yuan
    • Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking University
  • Zengpei Dou
    • Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking University
  • Zujin Shi
    • Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking University
  • Zhen Liu
    • Institute of Nanochemistry and NanobiologyShanghai University
    • Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking University
    • Institute of Nanochemistry and NanobiologyShanghai University
    • Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking University
    • Institute of Nanochemistry and NanobiologyShanghai University
Open AccessResearch 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

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.

https://static-content.springer.com/image/art%3A10.1007%2Fs12274-010-1014-4/MediaObjects/12274_2010_1014_Fig1_HTML.jpg

Keywords

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