Journal
RSC ADVANCES
Volume 9, Issue 33, Pages 18949-18953Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra01563a
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Funding
- National Key Research and Development Program [2016YFD0500105]
- Fundamental Research Funds for the Central Universities [2662018QD042]
- Da Bei Nong Group Promoted Project for Young Scholar of HZAU [2017DBN009]
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Gold nanoclusters (Au NCs) are widely used in various types of detections due to their unique fluorescence properties. However, there are rare reports on enhanced fluorescence sensors for drug molecules. Here, we report a novel strategy for detection of sodium 2-mercaptoethanesulfonate (MES) by using a fluorescence-enhanced histidine stabilized Au NCs (His-Au NCs) probe. This fluorescence probe showed excellent selectivity and sensitivity towards MES. Furthermore, we have demonstrated that the fluorescence enhancement of His-Au NCs was attributed to ligand exchange with MES by Fourier Transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The feasibility of practical applications of this probe was further investigated by sensing the MES content in Mesna injection (Uromitexan).
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