Silver microspheres coated with a molecularly imprinted polymer as a SERS substrate for sensitive detection of bisphenol A

Xiaohui Ren¹, Emily C Cheshari^{1

2}, Jingyao Qi³, Xin Li^{4

5}

Affiliations

¹ MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China.
² Chemistry and Biochemistry Department, School of Science and Applied Technology, Laikipia University, Nyahururu, 20300-1100, Kenya.
³ State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China.
⁴ MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China. lixin@hit.edu.cn.
⁵ State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China. lixin@hit.edu.cn.

PMID: 29610992
DOI: 10.1007/s00604-018-2772-z

Silver microspheres coated with a molecularly imprinted polymer as a SERS substrate for sensitive detection of bisphenol A

Xiaohui Ren et al. Mikrochim Acta. 2018.

. 2018 Apr 2;185(4):242.

doi: 10.1007/s00604-018-2772-z.

Authors

Xiaohui Ren¹, Emily C Cheshari^{1

2}, Jingyao Qi³, Xin Li^{4

5}

Affiliations

¹ MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China.
² Chemistry and Biochemistry Department, School of Science and Applied Technology, Laikipia University, Nyahururu, 20300-1100, Kenya.
³ State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China.
⁴ MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China. lixin@hit.edu.cn.
⁵ State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China. lixin@hit.edu.cn.

PMID: 29610992
DOI: 10.1007/s00604-018-2772-z

Abstract

An efficient approach is demonstrated for preparing particles consisting of a silver core and a shell of molecularly imprinted polymer (Ag@MIP). The MIP is prepared by using bisphenol A (BPA) as the template and 4-vinylpyridine as the functional monomer. The Ag@MIP fulfills a dual function in that the silver core acts as a SERS substrate, while the MIP allows for selective recognition of BPA. The Ag@MIP is characterized by scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, thermogravimetric analysis and Raman spectroscopy. The Raman intensity of Ag@MIP is higher than that of bare silver microspheres. The detection limit for BPA is as low as 10^-9 mol·L^-1. Graphical abstract Schematic illustration of the preparation of silver microspheres coated with a molecularly imprinted polymer (Ag@MIPs) for detecting bisphenol A (BPA) by surface enhanced Raman scattering (SERS).

Keywords: Chemical enhancement; Core-shell system; Electromagnetic enhancement; Endocrine-disrupting chemicals; Molecular imprinting.

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References

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Silver microspheres coated with a molecularly imprinted polymer as a SERS substrate for sensitive detection of bisphenol A

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Silver microspheres coated with a molecularly imprinted polymer as a SERS substrate for sensitive detection of bisphenol A

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