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Journal of Materials Science

, Volume 43, Issue 13, pp 4625–4630 | Cite as

Preparation of pH-responsive silver nanoparticles by RAFT polymerization

  • Youyi SunEmail author
  • Yaqing Liu
  • Guizhe Zhao
  • Xing Zhou
  • Jiangang Gao
  • Qijin Zhang
Article

Abstract

Silver nanoparticles were prepared by chemical reduction of AgNO3 in the presence of the PDMAEMA-b-PPA, which was synthesized by the reversible addition-fragmentation transfer technique. The formation of the silver nanoparticles was determined by the transmission electron microscopy (TEM) images and UV–Vis absorption spectra. The average size of the silver nanoparticles was shown to 11.4 nm. Particularly, the pH-responsive property of the silver nanoparticle was further observed. It was characterized by the zate potential, the UV–Vis spectra, and TEM images. The results show that the pH-responsive property is attributed to the aggregate of the silver nanoparticles as a function of pH. The characteristic is expected to apply in the nanoscale optical biosensor and biomaterials.

Keywords

Silver Nanoparticles Lower Critical Solution Temperature DMAEMA Raft Agent Surface Plasmon Resonance Absorption 

Notes

Acknowledgements

This work was supported by the Natural Science Foundation of Shangxi (Nos. 033004 and 200671037), Youthful Science Foundation of Shanxi province (Nos. P20072185 and P20072194), and the Youthful Science Foundation of North university. The authors are grateful for the financial support and express their thanks to Zhang Zhiyi for helpful discussions and Gao jinfeng for FT-IR measurements.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Youyi Sun
    • 1
    Email author
  • Yaqing Liu
    • 1
  • Guizhe Zhao
    • 1
  • Xing Zhou
    • 1
  • Jiangang Gao
    • 2
  • Qijin Zhang
    • 3
  1. 1.Research Center for Engineering Technology of Polymeric Composites of ShangxiNorth University of ChinaTaiyuanPeople’s Republic of China
  2. 2.Department of BiochemistryAnhui University of Technology and ScienceWuhuChina
  3. 3.Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefeiChina

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