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Functionalization of Multi-Walled Carbon Nanotubes With Thermo-Responsive Azide-Terminated poly(N-isopropylacrylamide) via Click Reactions

Functionalization of Multi-Walled Carbon Nanotubes With Thermo-Responsive Azide-Terminated poly(N-isopropylacrylamide) via Click Reactions

Xin Su, Ya Shuai, Zanru Guo, Yujun Feng

Molecules. 2013 Apr 18;18(4):4599-612.

PMID: 23599017

Abstract:

Covalently functionalized multi-walled carbon nanotubes (MWNTs) were prepared by grafting well-defined thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) via click reactions. First, azide-terminated poly(N-isopropylacrylamide) (N3-PNIPAM) was synthesized by reversible addition fragmentation chain-transfer (RAFT) polymerization, and then the N₃-PNIPAM moiety was connected onto MWNTs by click chemistry. The products were characterized by means of FT-IR, TGA and TEM. The results show that the modification of MWNTs is very successful and MWNTs functionalized by N₃-PNIPAM (MWNTs-PNIPAM) have good solubility and stability in water. TEM images show the functionalized MWNTs are dispersed individually, indicating that the bundles of original MWNTs are separated into individual tubes by surface modification with polymer chains. These MWNTs modified with PNIPAM represent a potential nano-material for preparation of hydrophilic composite materials.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS74680	Poly(N-isopropylacrylamide), azide terminated			Price

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