Preparation method of SrAlB2O7:Eu<3+> fluorescent probe for detection of OPs (organophosphorus pesticides)

An organophosphorus pesticide, sral2b2o7 technology, applied in the field of materials science, can solve the problems of many factors affecting fluorescence quenching, and the inability to determine the exact content of pesticide residues, etc., and achieve the effect of enhanced fluorescence intensity and a wide range of applications
CN105255484AActive Publication Date: 2016-01-20HEFEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEFEI UNIV
Publication Date
2016-01-20

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Abstract

The invention provides a preparation method of a SrAlB2O7:Eu<3+> fluorescent probe for detection of OPs (organophosphorus pesticides). The preparation method comprises two steps as follow: firstly, Eu<3+> and target analyte, OP molecules, interact to form organic ligand, then strontium nitrate, aluminum nitrate, boric acid and a pore-forming agent are added to a beaker accommodating deionized water, the mixture is stirred, and sol is formed; calcination is performed after gel is obtained, and Eu<3+> marked OP molecular printing SrAl2B2O7:Eu<3+> fluorescent probe is obtained. OP molecule selectivity recognition sites are available after template molecules are removed, the OP molecules further interact with Eu<3+> on the recognition sites after entering the recognition sites of the fluorescent probe, the OP molecules and the recognition sites form organic ligand, the organic ligand absorbs energy and transfers the energy to Eu<3+>, the fluorescence intensity of the fluorescent probe is changed, and selective recognition and detection of pesticide molecules are realized.
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Description

technical field

[0001] The invention relates to the field of material science, in particular to SrAl for the detection of organophosphorus pesticides 2 B 2 o 7 :Eu 3+ Methods for the preparation of fluorescent probes. Background technique

[0002] In recent years, research on the detection of pesticides and related fluorescent probes has attracted widespread attention and interest from social research institutions, and some fruitful results have been achieved. Laboratory detection of specific pesticides has been widely used by methods such as spectroscopy, chromatography, and enzyme inhibition. These traditional analytical techniques can meet the basic requirements in analysis, such as selectivity, reliability, accuracy and reproducibility, but these detection methods are expensive, time-consuming and cumbersome, because the sample must be detached The detection site is sent to the laboratory for analysis, and real-time on-site detection cannot be achieved. In summary,...

Claims

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