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Molecularly imprinted polymer on ionic liquid-modified CdSe/ZnS quantum dots for the highly selective and sensitive optosensing of tocopherol†
Huilin Liu,Guozhen Fang,Changmo Li,Mingfei Pan,Cuicui Liu,Chao Fan,Shuo Wang
Journal of Materials Chemistry Pub Date : 08/08/2012 00:00:00 , DOI:10.1039/C2JM33522K
Abstract

A new molecularly imprinted polymer (MIP), which acts as a fluorescence nano-sensing material, has been developed for the highly selective and sensitive optosensing of tocopherol (TP). The material was constructed by anchoring the MIP layer on 1-vinyl-3-octylimidazolium ionic liquid (IL)-modified CdSe/ZnS quantum dots (QDs) by copolymerization. Here, the IL was first introduced to the surface of the QDs using a one-step modification of the electrostatic interactions to prepare uniform MIPs. The MIP fluorescence was more strongly quenched by TP than the non-imprinted polymer was, which indicated that the QDs@IL@MIP could recognize the corresponding TP without the need for inducers and derivatization.

Graphical abstract: Molecularly imprinted polymer on ionic liquid-modified CdSe/ZnS quantum dots for the highly selective and sensitive optosensing of tocopherol
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