Reversible Photo- and Thermo-Responsive Block Copolymer Micelles Functionalized by NIPAM and Azobenzene

Guixian Huang Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Zhou, Suzhou, P. R. China

Jian Zhu Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Zhou, Suzhou, P. R. China

Zhengbiao Zhang Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Zhou, Suzhou, P. R. China

Wei Zhang Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Zhou, Suzhou, P. R. China

Nianchen Zhou Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Zhou, Suzhou, P. R. China

Xiulin Zhu Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Zhou, Suzhou, P. R. China

Abstract

In this report, the photo and thermo dual responsive block copolymer, PVHMA-b-PNIPAM, is synthesized by reversible addition-fragmentation chain transfer polymerization. The structure of copolymer was characterized by GPC and NMR. The copolymer trends to form micelles in water. A photo controlled reversible size changing as well as temperature induced reversible precipitation and dispersion in water was found.

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Acknowledgments

The financial support from the National Nature Science, financial support for this work from the National Natural Science Foundation of China (Nos. 50803044), the Program of Innovative Research Team of Soochow University and the Qing Lan Project are gratefully acknowledged.

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Source: Royal Society of Chemistry (RSC)

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Reversible Photo- and Thermo-Responsive Block Copolymer Micelles Functionalized by NIPAM and Azobenzene

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