Synthesis of aza-crown ether-modified silver nanoparticles as colorimetric sensors for Ba2+ |
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| Authors: | Haibing Li Liang Zhang Yao Yao Cuiping Han Shan Jin |
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| Institution: | 1. Key Laboratory of Pesticide and Chemical Biology , Central China Normal University , Wuhan, P.R. China lhbing@mail.ccnu.edu.cn;3. Key Laboratory of Pesticide and Chemical Biology , Central China Normal University , Wuhan, P.R. China |
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| Abstract: | In this paper, we have demonstrated a facile strategy of preparing aza-crown ether (ACE)-modified silver nanoparticles (Ag NPs) by an efficient nano-conjugate technology named dithiocarbamate. This is the first report of using ACE to modify Ag NPs. ACE-modified Ag NPs have a good recognition of Ba2+, with the detection limit of 10? 8 mol/l. It is reasonable to believe that Ba2+ induced the self-assembly of Ag NPs by the formation of the sandwich structure with ACE.  |
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| Keywords: | silver nanoparticles aza-crown ether colorimetric sensor |
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