Inventors: Wei X, Li HJ, Xu YQ, Yu ZX, Zhou ZP, Yan YS
Patent Title: Preparation method and application of Mn-doped ZnS quantum dot imprinted sensor
Publication date: 2016
Publication number: CN104237182

Abstract: The invention relates to a preparation method and application of a Mn-doped ZnS quantum dot imprinted sensor and belongs to the technical field of environmental functional material preparation. The method comprises the steps of firstly stirring an aqueous solution of zinc sulfate heptahydrate and an aqueous solution of manganese chloride tetrahydrate at room temperature under the condition that nitrogen gas is introduced, and adding an aqueous solution of sodium sulfide nonahydrate, so as to obtain Mn-ZnS quantum dots; carrying out vinyl modification on the obtained Mn-ZnS quantum dots by using 3-(methacryloyloxy) propyl trimethoxysilane, then, synthesizing a Mn-doped ZnS quantum dot imprinted sensor, which takes 2,6-dichlorophenol as template molecules, methacrylic acid as functional monomers, Mn-ZnS-KH570 as auxiliary monomers, ethylene glycol di(methacrylate) as a cross-linking agent, 2,2-azodiisobutyronitrile as an initiator and acetonitrile as a solvent, by using a precipitation polymerization method through two-stage polymerization, and applying the Mn-doped ZnS quantum dot imprinted sensor to the optical detection on 2,6-dichlorophenol. The prepared phosphorescent molecular-imprinted polymer has very good optical and pH stability and has the capability of selectively identifying 2,6-dichlorophenol.
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