期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 39, 页码 34518-34525出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b13841
关键词
gold nanoplate; copper ion; etching; aptamer; chloramphenicol
资金
- Taiwan Postdoctoral Research Abroad Program [105-2917-1-564-034]
- JSPS KAKENHI [JP25220204]
- Grant for Molecular Systems Research by RIKEN
A colorimetric method for fast, simple, and selective detection of Cu2+ was developed using I- -mediated etching of triangular gold nanoplates (AuNPLs). The method was based on our finding that Cu2+ efficiently promoted this etching in the presence of SCN- The etching process was accompanied by a dramatic color change from blue to red, allowing for visual and spectroscopic detection of Cu2+ with detection limits of 10 and 1 mu M, respectively. When molecular recognition by a DNA aptamer was incorporated into this method, visual detection of chloramphenicol was also achieved with a detection limit of 5 mu M.
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