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Reference type: Journal
Authors: Ren XH, Cheshari EC, Qi JY, Li X
Article Title: Silver microspheres coated with a molecularly imprinted polymer as a SERS substrate for sensitive detection of bisphenol A.
Publication date: 2018
Journal: Microchimica Acta
Volume: 185
Issue: (4)
Page numbers: ArticleNo242.
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
Template and target information: bisphenol A, BPA
Author keywords: Core-shell system, Chemical enhancement, Electromagnetic enhancement, endocrine-disrupting chemicals, molecular imprinting

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