Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (4): 623.doi: 10.7503/cjcu20190686

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Glutathione Sensing: from Colorimetry to Single Particle Spectroscopy Based on Gold NP@MnO2 Nanosheets Supraparticles

LING Yunyun1,2,LI Li1,LIANG Xiurong1,XIA Yunsheng1,*()   

  1. 1. Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
    2. Department of Medical General Chemistry, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
  • Received:2019-12-18 Online:2020-04-10 Published:2020-02-17
  • Contact: Yunsheng XIA E-mail:xiayuns@mail.ahnu.edu.cn
  • Supported by:
    This paper is supported by the National Natural Science Foundation of China(21775004);the Young Program of Wannan Medical College, China(WK201512)

Abstract:

We herein study glutathione(GSH) sensing by two kinds of assay modes, namely colorimetry and single particle spectroscopy, using the as-prepared hybrid supraparticles made of gold nanoparticles and MnO2 nanosheets(denoted as AMNS-SPs) as probes. The sensing is based on the selective etching of decorated MnO2 nanosheets, which causes a substantial blue shift of the localized surface plasmon resonance of the AMNS-SPs. In terms of the two sensing systems, the detection limits are 0.018 μmol/L and 23.2 fmol/L, respectively. To our knowledge, the latter is one of the highest sensitivity for GSH sensing. This favorable performance is attributed to a rather thin thickness of the decorated MnO2 nanosheets.

Key words: Glutathione, Colorimetric, Naked eye detection, Single particle spectroscopy

CLC Number: 

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