Synthesis and Responsive Behavior of Amphiphilic PS-b-PEG Diblock Copolymer Brushes

doi:10.7503/cjcu20120114

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (12): 2816.doi: 10.7503/cjcu20120114

• Polymer Chemistry • Previous Articles Next Articles

Synthesis and Responsive Behavior of Amphiphilic PS-b-PEG Diblock Copolymer Brushes

YANG Mu-Quan, MAO Jun, DONG Zhi-Xin, WANG Da-Peng, JI Xiang-Ling

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received:2012-02-13 Online:2012-12-10 Published:2012-11-20
Contact: 相玲姬 E-mail:xlji@ciac.jl.cn

Abstract

Abstract:

Polystyrene-b-polyethylene glycol(PS-b-PEG) diblock copolymer brushes on a silicon wafer were synthesized via the combination of atom transfer radical polymerization(ATRP) and Click chemistry reaction. The ATRP initiator was grafted to silicon wafer. Then, polystyrene was grafted to the substrates through ATRP technique. After azidation with NaN₃, the Si/SiO₂/PS-Br brushes were transformed to Si/SiO₂/PS-N₃ with azide groups at the ends. The synthesis of PS-b-PEG brushes was then achieved via the click reaction of the obtained Si/SiO₂/PS-N₃ and an excess of alkynyl-PEG. The chemical compositions and the surface properties of the as-prepared PS-b-PEG brushes were detected via X-ray photoelectron spectroscopy(XPS), atomic force microscopy(AFM), ellipsometry, and water contact angle techniques. The responsive behavior of diblock copolymer brushes treated under different solvents was also discussed.

Key words: Polystyrene-b-polyethylene glycol diblock copolymer brush, Atom transfer radical polymerization, Click chemistry, Responsive behavior

CLC Number:

O631.4

TrendMD:

YANG Mu-Quan, MAO Jun, DONG Zhi-Xin, WANG Da-Peng, JI Xiang-Ling. Synthesis and Responsive Behavior of Amphiphilic PS-b-PEG Diblock Copolymer Brushes[J]. Chem. J. Chinese Universities, 2012, 33(12): 2816.

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Synthesis and Responsive Behavior of Amphiphilic PS-b-PEG Diblock Copolymer Brushes

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