3,3'-dimethylthio-4,4'-bis(2,6-dichloro-4-nitrophenyldiazoamino)biphenyl and preparation method and application

A technology of diaminobiphenyl dithiazole and dimethylthio, which is applied in the field of bistriazene compounds, can solve the problems of difficult heavy metal ion fluorescence detection, large interference of coexisting ions, unsatisfactory sensitivity and selectivity, etc., and achieves selectivity. Good, improve sensitivity, enhance the effect of π electron mobility
CN105753755BInactive Publication Date: 2017-10-27SHANXI DATONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANXI DATONG UNIV
Publication Date
2017-10-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of double triazene compounds and provides 3,3'-dimethylthio-4,4'-bis(2,6-dichloro-4-nitrophenyl diazoamino) biphenyl, a preparation method and an application in order to solve the problems that when an existing triazene reagent is used for detecting heavy metal ions through photometric analysis, interference from coexisting ions is strong, sensitivity and selectivity are not ideal enough and the existing triazene reagent cannot be taken as a fluorescent reagent for fluorescence detection of the heavy metal ions. 3,3'-dimethylthio-4,4'-diaminodiphenyl and 2,6-dichloro-4-nitrophenyl are linked together through a triazene functional group -N=N-NH-, and a prepared reagent is not only a photometric analysis reagent with good sensitivity and selectivity, but also is a fluorescence analysis reagent with a high fluorescence characteristic. The sensitivity of the reagent for measuring mercury with a photometric method is improved; the reagent is a fluorescent lead (II) measurement reagent with good sensitivity and selectivity; the allowed coexistence number of common interfering ions is greatly increased; a synthetic method is simple, conditions are mild, and complexes formed by a solid reagent and a reagent solution with mercury are all stable.
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Description

technical field

[0001] The invention belongs to the technical field of bistriazene compounds, in particular to a 3,3'-dimethylthio-4,4'-bis(2,6-dichloro-4-nitrophenyldiazoamino)bis Benzene and its preparation method and application. Background technique

[0002] Triazene reagent refers to the general term of all reagents with R-N=N-NH-R' structure. The -N=N-NH-functional group of the reagent is easy to coordinate with IB and IIB group metal ions in the presence of surfactants to form stable colored complexes. Therefore, this type of reagent can be used for photometric detection of metal ions.

[0003] Currently, triazene reagents are mainly used for Ca 2+ 、Ni 2+ , Hg 2+ 、Cu 2+ 、Co 2+ 、Ag + Photometric determination of other metal ions (Teng Sijiang, Jiang Wanquan, Zhu Yurui, etc. Chemical Reagents, 1992, 14 (2): 109). Such reagents have attracted the attention of chemists because of their advantages such as simple operation, high sensitivity, high contrast in color r...

Claims

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