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Preparation of pH-responsive silver nanoparticles by RAFT polymerization

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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.

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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 **feng for FT-IR measurements.

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Authors and Affiliations

  1. Research Center for Engineering Technology of Polymeric Composites of Shangxi, North University of China, Taiyuan, Shangxi, 030051, People’s Republic of China

    Youyi Sun, Yaqing Liu, Guizhe Zhao & **ng Zhou

  2. Department of Biochemistry, Anhui University of Technology and Science, Wuhu, Anhui, 241000, China

    Jiangang Gao

  3. Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China

    Qi** Zhang

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  1. Youyi Sun
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  2. Yaqing Liu
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  3. Guizhe Zhao
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  5. Jiangang Gao
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  6. Qi** Zhang
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Correspondence to Youyi Sun.

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Sun, Y., Liu, Y., Zhao, G. et al. Preparation of pH-responsive silver nanoparticles by RAFT polymerization. J Mater Sci 43, 4625–4630 (2008). https://doi.org/10.1007/s10853-008-2671-5

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