Sub-10-nm multicolored gold nanoparticles for colorimetric determination of antibiotics via formation of interlocking rings.

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ID: 125661
2019
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Abstract
A general approach is presented for synthesis of multicolored gold nanoparticles (GNPs) by Au(I)-mediated generation of interlocking rings in proteins and antibiotics. The Au(I) ions are shuttled from proteins to antibiotics, and this causes the formation of interlocking rings. The multicolored GNPs of different sizes were synthesized in the rings by using the rapid nucleation method. To take the unique colors of GNPs, a functional array was designed for the colorimetric determination and discrimination of antibiotics, specifically of amoxicillin, chlortetracycline, erythromycin, spiramycin, neomycin, thiamphenicol, gentamycin and lincomycin. The method is based on the "three color" (RGB) principle. The color response patterns are characteristic for each antibiotic and can be quantitatively differentiated by statistical techniques. The limits of detection (LOD, at S/N = 3) for spiramycin (Sp) have been calculated to be 0.18 μM and 0.10 μM in water and milk, respectively. The good linear range (from 0.3 to 3.5 μM) has been used for the quantitative assay of Sp in a certified reference material. Graphical abstractSchematic presentation of gold nanoparticles (GNPs) synthesis via formation of interlocking rings in protein and antibiotics. The Au(I) ions mediate protein and antibiotics to be interlocking rings, which are quickly fixed via microwave reaction. The GNPs are synthesized and assembled in the rings.
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leng2019sub10nmmikrochimica Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Leng, Yumin;Fu, Yu;Lu, Zhiwen;Sang, Zhipei;Liu, Kecheng;Du, Chenxi;Ma, Linfeng;
Journal Mikrochimica acta
Year 2019
DOI
10.1007/s00604-019-3949-9
URL
Keywords
antibiotics discrimination array colorimetric analysis gold nanoparticle synthesis rapid nucleation shuttle spiramycin three color principle

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