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Abstract: A novel molecularly imprinted polymer (MIP) based on hydrophobic CdSe/ZnS quantum dots (HBQDs) was synthesized via an approach that combines MIPs for the selectivity and sensitivity with semiconductor HBQDs as optosensing material (HBQDs@MIP). Here, using a one-pot water-in-oil reverse microemulsion polymerization, the HBQDs@MIP was used as a molecular recognition element to construct an Nε-carboxymethyllysine (CML) optosensor. The HBQDs were coated with silica to endow the nanoparticles with high dispersibility and broad compatibility with hydrophilic analytes. Under optima conditions, the relative fluorescence intensity of the HBQDs@MIP decreased linearly with increasing CML concentration in the range 5-400 μg L-1. The proposed method enables, detection procedures to be completed within 90 min, with good recoveries, ranging from 85% to 106%. It can be applied to the rapid and cost-effective monitoring of CML in food samples
Template and target information: Nε-carboxymethyllysine, CML
Author keywords: Nε-Carboxymethyllysine, Optosensing material, Hydrophobic quantum dots, molecularly imprinted polymer, Reverse microemulsion