Preparation of stable gold nanoparticles by using diblock copolymer mixture as encapsulating agent |
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| Authors: | Lianlian Song Xiaokai Zhang Jinhao Liu Xue Li |
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| Institution: | 1. Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, 106 Jiwei Road, Jinan, 250022, China
2. College of Physics and Electronics, Shandong Normal University, 88 Wenhuadong Road, Jinan, 250014, China
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| Abstract: | Gold nanoparticles by using the mixture of polystyrene-block-poly(2-vinyl pyridine)/poly(2-vinyl pyridine)-block-poly(ethylene oxide) (PS-b-P2VP/P2VP-b-PEO) block copolymers as encapsulating agent was prepared. The prepared nanoparticles were characterized by transmission electron microscopy, UV-Vis spectroscopy and contact angle. It is demonstrated that the obtained gold nanoparticles are covered with mixed block copolymer shells. The hydrophilic property of the nanoparticles can be varied by the change of the dispersion medium. The obtained gold nanoparticles with mixed block copolymer shells are stable in organic solvents (such as tetrahydrofuran and toluene) and water. |
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