期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 409, 期 19, 页码 4627-4635出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-017-0410-y
关键词
Molecularly imprinted polymers; Surface-enhanced Raman scattering; ZnO/Ag heterostructures; Self-cleaning; Selective detection
资金
- National Natural Science Foundation of China [21277063, 21407057, 21407064, 21507045, 21576111]
- National Basic Research Program of China (973 Program) [2012CB821500]
- Natural Science Foundation of Jiangsu Province [BK20140534, BK20140535]
- National Postdoctoral Science Foundation [2014M561595]
- Postdoctoral Science Foundation [1401108C]
Novel molecularly imprinted polymers (MIPs) based on the technique of surface-enhanced Raman scattering (SERS) were successfully prepared. Firstly, ZnO nanorods were fabricated with Ag by reduction of Ag+ on the surface of the ZnO nanorods. Then, ZnO/Ag heterostructures were used as the substrate, rhodamine 6G was used as the template molecule, acrylamide was used as the functional monomer, ethylene glycol dimethacrylate was used as the cross-linker, and 2,2'-azobis(2-methylpropionitrile) was used as the initiator to prepare the ZnO/Ag MIPs (ZOA-MIPs). Through characterization analysis, it was proved that the novel ZOA-MIPs exhibited excellent SERS properties and selectivity. Under the optimal conditions, there was a good linear relationship (R (2) = 0.996) between the Raman signal (at 1654 cm(-1)) and the concentration of the templates, and the detection limit was 10(-13) mol L-1. It was also proved that the ZOA-MIPs had the property of self-cleaning, resulting in good reusability. It is envisaged that the sensitivity of SERS coupled with the selectivity of MIPs could result in a promising chemosensor for practical applications.
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