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Reference type: Journal
Authors: Sadeghi S, Jahani M, Belador F
Article Title: The development of a new optical sensor based on the Mn doped ZnS quantum dots modified with the molecularly imprinted polymers for sensitive recognition of florfenicol.
Publication date: 2016
Journal: Spectrochimica Acta Part A-Molecular and Biomolecular Spctroscopy
Volume: 159
Page numbers: 83-89.
DOI: 10.1016/j.saa.2016.01.043
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1386142516300439

Abstract: The Mn doped ZnS quantum dots (Mn:ZnS QDs) capped with the florfenicol molecularly imprinted polymer (Mn:ZnS QDs@MIP) were prepared via the sol-gel surface imprinting approach using 3-aminopropyltriethoxysilane (APTES) as the functional monomer and tetraethoxysilane (TEOS) as the cross-linker for the optosensing of the florfenicol. Transmission electron microscopy (TEM), X-ray diffractometer, IR spectroscopy, UV-Vis absorption spectrophotometry, and spectrofluorometry were used to elucidate the formation, morphology, and identification of the products. To illustrate the usefulness of the new imprinted material, the non-imprinted coated Mn:ZnS QDs (Mn:ZnS QDs@NIP) were synthesized without the presence of the florfenicol. It was revealed that the fluorescence (FL) intensity of the Mn:ZnS QDs@MIP increased with increasing the FF concentration. Under the optimal conditions, changes in the FL intensity in the presence of the target molecule showed a linear response in the concentration range of 30-700 μmol L-1 with a detection limit of 24 μmol L-1. The developed method was finally applied successfully to the determination of FF in different meat samples with satisfactory recoveries
Template and target information: florfenicol, FF
Author keywords: Mn doped ZnS quantum dots, surface molecularly imprinted polymer, sol-gel, Florfenicol, Fluorescence optosensor


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