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Issue 6, 2014
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A novel molecularly imprinted polymer on CdSe/ZnS quantum dots for highly selective optosensing of mycotoxin zearalenone in cereal samples

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Abstract

A novel molecularly imprinted optosensing material (MIOM) based on ionic liquid (IL)-stabilized CdSe/ZnS quantum dots (QDs) was prepared, for highly selective and sensitive recognition of the mycotoxin zearalenone (ZON). ZON is expensive and highly toxic, so the ZON analog cyclodo-decanyl-2,4-dihydroxybenzoate (CDHB) was instead used as the template. MIOM was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and adsorption experiment. Under optimal conditions, the relative fluorescence intensity of MIOM decreased linearly with increasing ZON concentration, in the range of 0.003–3.12 μmol L−1. MIOM had a detection limit of 0.002 μmol L−1. MIOM was used to detect ZON in corn, rice and wheat flours, and at three concentration levels 50, 100 and 500 ng g−1, ZON recoveries for these three cereals were 94.2–98.7%, 93.1–107.6% and 84.4–106.0%, respectively.

Graphical abstract: A novel molecularly imprinted polymer on CdSe/ZnS quantum dots for highly selective optosensing of mycotoxin zearalenone in cereal samples

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Publication details

The article was received on 17 Sep 2013, accepted on 26 Nov 2013 and first published on 26 Nov 2013


Article type: Paper
DOI: 10.1039/C3RA45172K
Citation: RSC Adv., 2014,4, 2764-2771

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    A novel molecularly imprinted polymer on CdSe/ZnS quantum dots for highly selective optosensing of mycotoxin zearalenone in cereal samples

    G. Fang, C. Fan, H. Liu, M. Pan, H. Zhu and S. Wang, RSC Adv., 2014, 4, 2764
    DOI: 10.1039/C3RA45172K

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