BHNAPPDP and preparation method and application thereof

A technology of naphthalene amino azo group and biphenol, which is applied in the field of bis-triazene compounds, can solve the problems of unsatisfactory sensitivity of reagents, and achieve the effects of high sensitivity, simple preparation method and good stability

Inactive Publication Date: 2014-03-26
SHANXI DATONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a 3,3'-bis(2-hydroxyl-1-naphthylaminoazo)-4,4'-bis(2-hydroxyl-1-naphthylaminoazo)-4,4'- Biphenol and its preparation method and application

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  • BHNAPPDP and preparation method and application thereof
  • BHNAPPDP and preparation method and application thereof
  • BHNAPPDP and preparation method and application thereof

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Embodiment Construction

[0031] The present invention provides a 3,3'-bis(2-hydroxyl-1-naphthylaminoazo)-4,4'-bis(2-hydroxyl-1-naphthylaminoazo)-4,4'-bis(3,3'-bis(2-hydroxyl-1-naphthylaminoazo)-4,4'-bis(2-hydroxyl-1-naphthylaminoazo) in order to solve the problem that the sensitivity of the reagents for detecting heavy metal ions in the prior art is not ideal enough. Hydroquinone and its preparation method and application.

[0032] The present invention is realized by the following technical scheme, a 3,3′-bis(2-hydroxy-1-naphthylaminoazo)-4,4′-biphenyldiol (BHNAPPDP for short)

[0033] Its molecular structural formula is:

[0034] .

[0035] 3,3'-bis(2-hydroxyl-1-naphthylaminoazo)-4,4'-diphenol preparation method comprises the following steps (as attached figure 1 shown):

[0036] ① Nitration of 4,4'-biphenyl bisphenol In a 250 mL round bottom flask equipped with a reflux condenser and a dropping funnel, add 75 mL of dichloromethane, and add 4,4'-biphenyl bisphenol 9.5 mL under stirring. g (0.0...

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Abstract

The invention relates to a di-triazene compound, and provides BHNAPPDP and a preparation method and application thereof to solve the problem that reagents for detecting heavy metal cadmium ions in the prior art is poor in sensitivity. The BHNAPPDP is obtained through combining two regents with the fluorescence characteristic, 1-amino-2-isonaphthol and 3-3'-diamido-4,4'-biphenol through diazo-reaction and coupled reaction. According to the compound, the conjugated system is increased, and the fluorescence characteristic of reagents is enhanced; hydroxyl at the ortho-position of the biphenyl in the triazene structure is introduced in, so as to be a good dentate under the alkaline condition and a good auxochrome, thereby greatly improving the sensitivity of the reagent. Therefore, the reagent is a good color developing agent for photometric analysis, and a good fluorometric analysis regent with high sensitivity, good selectivity and low limit of detection. The preparing method provided by the invention is simple and low in cost.

Description

technical field [0001] The invention relates to a bistriazene compound, specifically a preparation method of 3,3'-bis(2-hydroxy-1-naphthylaminoazo)-4,4'-biphenyldiol and its application . Background technique [0002] Cadmium is an accumulative and harmful element, and the determination of trace cadmium in the environment has certain practical significance. Triazene reagents are highly sensitive chromogenic reagents for the determination of cadmium, mercury, silver and other metal ions. Triazene reagents refer to a class of compounds containing the functional group "-N=N-NH-". Due to the p-π conjugation, =N-H has strong acidity. Group ⅠB and ⅡB metal ions coordinate sensitive metal color reaction, and are good coordination groups (J. Barker, N. D. Cameron, M. Kilner, et al., J. Chen. Soc. DationTrans[J ], 12(1991): 3435). Triazene reagent 1-(4-nitrophenyl)-3-(5,6-dimethyl-1,2,4-triazole)-triazene (Ma Weiwu, Zhang Chunniu, Zheng Yunfa. Yan Kuang Testing, 2007, 26(6):469-...

Claims

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Application Information

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IPC IPC(8): C07C245/24C09K11/06G01N21/64
Inventor 武美霞许琳樊月琴郭永
Owner SHANXI DATONG UNIV
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