| AuNP aggregation-induced quantitative colorimetric aptasensing of sulfadimethoxine with a smartphone |
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| 作者姓名： | Xiaoliang Zhang Le Wang Xiaochun Li Xiujun Li |
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| 作者单位： | 1. College of Biomedical Engineering, Taiyuan University of Technology;2. Department of Chemistry and Biochemistry, University of Texas at El Paso |
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| 摘 要： | A gold nanoparticle(AuNP) aggregation-induced colorimetric aptasensing method for quantitative detection of sulfadimethoxine(SDM) with a smartphone was developed. AuNPs were complexed with aptamers which protected Au NPs from aggregating in high-concentration salt solutions. In the presence of SDM,SDM bound with the aptamer on the surface of Au NPs with higher affinity, which competitively desorbed the aptamer from the AuNP surface and resulted in AuNPs aggregation, accompanied with a color chan...
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