Growth of silver nanoparticles on poly(acrylic acid) brushes and their properties

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• 作者：Liang Li ; Yumin Da ; Shu Ying ; Weiqian Zheng ; Xiaoya Zhang ; Xianghua Yu
• 关键词：Ag nanoparticles ; Polymer brushes ; Properties
• 刊名：Polymer Bulletin
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：74
• 期：2
• 页码：505-516
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Polymer Sciences; Soft and Granular Matter, Complex Fluids and Microfluidics; Characterization and Evaluation of Materials; Physical Chemistry;
• 出版者：Springer Berlin Heidelberg
• ISSN：1436-2449
• 卷排序：74

文摘

A simple procedure is employed for the growth of silver nanoparticles (Ag NPs) onto the silicon substrate modified by poly(acrylic acid) (PAA) brushes, via: (1) surface-initiated ATRP of tert-butyl acrylate on Si surface to the preparation of poly(tert-butyl acrylate) brushes, (2) acid hydrolysis of PBA to the formation of PAA, and (3) in situ synthesis of Ag NPs via chemical reduction of AgNO₃ in the presence of PAA brushes. The polymer brushes are thoroughly characterized. Moreover, Ag nanoparticles are homogeneously immobilized into the brush layer and have been used to fabricate a sensor platform of surface-enhance Raman scattering for the detection of organic molecules and effectively catalyze the reduction of methylene blue by NaBH₄.