Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 17, Issue 33, Pages 21343-21347Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp00206k
Keywords
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Funding
- National Natural Science Foundation of China [21176052, 51379052]
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [2013TS05]
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Driven by the ultrasensitivity of the surface-enhanced Raman scattering (SERS) technique and the directive selection of molecular imprinting polymers (MIPs), core-shell silver-molecularly imprinted polymer (Ag@MIP) hybrid structure was synthesized to serve as a novel SERS platform. The results show that as prepared Ag@MIPs wrapped over a thin shell of MIPs are sensitive to the template molecule (Rhodamine 6G). To investigate the selectivity of Ag@MIPs, the structurally related molecules, such as Rhodamine B and crystal violet, were chosen as controls. Notably, the high sensitivity of Ag@MIPs is restrained by the non-specific recognition of Rhodamine B and crystal violet. This high SERS enhancement of the template molecule can be interpreted by the gate effect and/or dummy hot spots. We believe that the sensitivity of SERS coupled with the selectivity of MIPs could induce a promising chemosensor or biosensor for practical applications.
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