%0 Journal Article %T Sensitive Determination of Aflatoxin B1 Using Fluorescence of ZnO Quantum Dots-Molecularly Imprinted Polymer Composite %J Nashrieh Shimi va Mohandesi Shimi Iran %I Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR %Z 1022-7768 %A Vahid, Behrouz %D 2019 %\ 02/20/2019 %V 37 %N 4 %P 211-222 %! Sensitive Determination of Aflatoxin B1 Using Fluorescence of ZnO Quantum Dots-Molecularly Imprinted Polymer Composite %K ZnO quantum dots %K Molecularly imprintثی polymer %K Composite %K Aflatoxin B1 %K Fluorescence %R %X Molecularly Imprinting Polymer (MIP)-coated A ZnO Quantum Dots (QDs) composite was introduced for selective determination of Aflatoxin B1 (AFB) as a template. The MIP layer was obtained by a simple method containing the self-assembly process of 3-aminopropyl triethoxysilane (APTES) monomers and tetraethyl ortho-silicate as a cross-linking agent. In order to create suitable sites in the polymeric matrix, AFB was applied as a proper template molecule. The inherent advantage of the MIP procedure is the great tendency of the prepared QDs toward the AFB molecules. The MIP-coated ZnO QDs displayed a potent fluorescence emission which could be quenched in the presence of AFB. This effect was exploited as the basis of a selective probe for the detection of AFB some water samples. In optimal conditions, a linear relationship between the emission intensity of prepared composite and concentration of AFB was obtained in the range of 0.008-1 mg/L with a detection limit of 0.003 mg/L. Linking the high selectivity of the MIP component with individual fluorescence features of ZnO QDs offers a sensitive and selective method for recognizing various toxic detection. The established method was satisfactorily applied for the determination of AFB contamination in environmental water samples. %U https://www.nsmsi.ir/article_29049_3dcfc9499203cf3316ee849120918928.pdf