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Schiff base zinc ion and magnesium ion fluorescent probe and preparation method thereof

A Schiff base zinc, fluorescent probe technology, applied in fluorescence/phosphorescence, chemical instruments and methods, preparation of imino compounds, etc. The effect of easy control of the reaction process, easy separation and high yield

Inactive Publication Date: 2014-04-02
DEZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, highly toxic heavy metals such as lead, cadmium, and mercury are widely used in current industrial production. However, when they are discharged into nature in the form of cations along with industrial wastewater or smoke, they will seriously pollute the atmosphere and the entire water system, causing serious damage to the ecosystem and environment. Great harm to the human living environment

Method used

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  • Schiff base zinc ion and magnesium ion fluorescent probe and preparation method thereof
  • Schiff base zinc ion and magnesium ion fluorescent probe and preparation method thereof
  • Schiff base zinc ion and magnesium ion fluorescent probe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 4.5mmol (0.8685g) of tetrakis-(diethylamino)-salicylaldehyde and dissolve it in 20ml of absolute ethanol to the reaction bottle, heat up to 70°C; dissolve 2mmol (0.216g) of p-phenylenediamine in 10ml of absolute ethanol, Add dropwise to the reaction bottle, reflux reaction for 8 hours; filter and dry to obtain N-diethylamino salicylaldehyde Schiff base based on p-phenylenediamine, that is, Schiff base zinc ion and magnesium ion fluorescent probe.

Embodiment 2

[0021] Take 4.5mmol (0.8685g) of tetrakis-(diethylamino)-salicylaldehyde and dissolve it in 21ml of absolute ethanol to the reaction bottle, heat up to 80°C; dissolve 2mmol (0.216g) of p-phenylenediamine in 12ml of absolute ethanol, Add dropwise to the reaction bottle, reflux reaction for 7 hours; filter and dry to obtain N-diethylamino salicylaldehyde Schiff base based on p-phenylenediamine, that is, Schiff base zinc ion and magnesium ion fluorescent probe.

Embodiment 3

[0023] Take 4.5mmol (0.8685g) of tetrakis-(diethylamino)-salicylaldehyde and dissolve it in 18ml of absolute ethanol to the reaction bottle, heat up to 75°C; dissolve 2mmol (0.216g) of p-phenylenediamine in 8ml of absolute ethanol, Add dropwise to the reaction bottle, reflux reaction for 7.5 hours; filter and dry to obtain N-diethylamino salicylaldehyde Schiff base based on p-phenylenediamine, that is, Schiff base zinc ion and magnesium ion fluorescent probe.

[0024] figure 1 It can be clearly seen that after adding 10 times the amount of zinc ions to the methanol solution of Schiff base compound L with a concentration of 1×10-5M, although the fluorescence emission wavelength position of the compound around 520nm does not change, its fluorescence emission The intensity increased significantly; the fluorescence emission intensity increased by 15 times compared with that before the addition of Zn2+. When Mg2+ was added to the compound, it not only red-shifted the fluorescence ...

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Abstract

The invention discloses a Schiff base zinc ion and magnesium ion fluorescent probe and a preparation method thereof. The preparation method comprises the following steps: by adopting absolute ethyl alcohol as a solvent, dissolving tetra-(diethylin)-salicylaldehyde in a reaction bottle, and heating to 70-80 DEG C; by adopting absolute ethyl alcohol as a solvent, after dissolving p-phenylenediamine, dropwise adding into the reaction bottle, and carrying out reflux reaction for 7-8 hours; and filtering and drying the mixed liquid after reaction to remove the solvent to obtain the Schiff base zinc ion and magnesium ion fluorescent probe. The method is simple and convenient and efficient to operate, and the needed intermediate is low in cost. The reaction process is easy to control, and the product is easy to separate, high in yield and high in purity. The fluorescent probe has a special identifying performance on zinc and magnesium ions, and has an application prospect in the aspects such as sensor technology, photochemistry and electroluminescent apparatuses.

Description

technical field [0001] The invention relates to the field of Schiff base synthesis, in particular to a fluorescent probe for detecting zinc ions and magnesium ions and a preparation method. Background technique [0002] With the development of society, the problem of environmental pollution is a hot spot of global concern. For example, highly toxic heavy metals such as lead, cadmium, and mercury are widely used in current industrial production. However, when they are discharged into nature in the form of cations along with industrial wastewater or smoke, they will seriously pollute the atmosphere and the entire water system, causing serious damage to the ecosystem and environment. It has caused great harm to the living environment of human beings. In addition, cations also play an important role in many life processes. For example, zinc ions are the most abundant metal ions in the human body, and play a key role in many life processes such as gene transcription, metalloenzy...

Claims

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Application Information

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IPC IPC(8): C09K11/06G01N21/64C07C251/24C07C249/02
Inventor 陈玉婷
Owner DEZHOU UNIV
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