Preparation of pH-responsive silver nanoparticles by RAFT polymerization
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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.
KeywordsSilver Nanoparticles Lower Critical Solution Temperature DMAEMA Raft Agent Surface Plasmon Resonance Absorption
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.
- 8.Sang YP, You HB (1999) Macromol Rapid Commun 20:269. doi: https://doi.org/10.1002/(SICI)1521-3927(19990501)20:5<269::AID-MARC269>3.0.CO;2-3 CrossRefGoogle Scholar
- 22.Sun YY, Wang D, Gao JG, Zheng Z, Zhang QJ (2007) J Appl Polym Sci 103:701Google Scholar
- 26.Sooklal K, Hanus LH, Ploehn H, Murphy JC (1998) J Adv Mater 10:1083. doi: https://doi.org/10.1002/(SICI)1521-4095(199810)10:14<1083::AID-ADMA1083>3.0.CO;2-B CrossRefGoogle Scholar