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Fluorescent probe for visual detection of silver ions and 2, 4, 6-trinitrophenol, preparation method and application

A technology of trinitrophenol and fluorescent probes, applied in chemical instruments and methods, fluorescence/phosphorescence, luminescent materials, etc., to achieve good selectivity, good application prospects, and high selectivity

Active Publication Date: 2021-03-12
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on a probe material capable of high selectivity, high sensitivity, and visual detection of the above two substances in the aqueous environment.

Method used

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  • Fluorescent probe for visual detection of silver ions and 2, 4, 6-trinitrophenol, preparation method and application
  • Fluorescent probe for visual detection of silver ions and 2, 4, 6-trinitrophenol, preparation method and application
  • Fluorescent probe for visual detection of silver ions and 2, 4, 6-trinitrophenol, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Quina 1 19 g (13.2 mmol), 3,3'-diaminobliphenyidine 1.29 g (6 mmol) and 25 ml of polyphosphate (PPA) were added to 50 ml of three flasks and mixed mix, heated to 160 The reaction was stirred at ° C for 48 h, stop heating, and 25 ml of deionized water was added after cooling to room temperature. The mixture was adjusted with a sodium hydroxide solution to give PH = 9, filtered to give a brown solid. Anhydrous ethanol was recrystallized 3 times, dried to give probe L, yield: 83.6%.

Embodiment 2

[0039] (1) Quina 1 1.39 g (13.8 mmol), 3,3'-diaminobliphenyidine 1.29 g (6 mmol) and 36 ml of polypophosphate (PPA) were added to 100 ml of three flasks and mixed mixed, heated to 165 The reaction was stirred at ° C for 50 h, stop heating, cooled to room temperature, and 36 ml of deionized water was added. The mixture was adjusted with a sodium hydroxide solution to allow PH = 10, filtered to give a brown solid. Anhydrous ethanol was recrystallized 3 times, dried to give probe L, yield: 84.9%.

Embodiment 3

[0041] (1) Quina 1 18 g (12.6 mmol), 3,3'-diaminophenylideine 1.29 g (6 mmol) and 24 ml of polyphosphate (PPA) were added to 50 ml of three flasks and mixed mixed, heated to 155 The reaction was stirred at ° C for 48 h, stop heating, and 24 ml of deionized water was added after cooling to room temperature. The mixture was adjusted with a sodium hydroxide solution to give PH = 9, filtered to give a brown solid. Anhydrous ethanol was recrystallized 3 times, dried to obtain probe L, yield: 81.2%.

[0042] Nuclear magnetic resonance analysis was carried out by a nuclear magnetic resonance unit, and the results were as follows:

[0043] 1H NMR (400MHz, DMSO, unit: PPM, such as figure 1 The shown: 7.61-7.79 (m, 6H), 7.95-7.85 (m, 4H), 8.07-8.12 (D, J = 8.1 Hz, 2H), 8.17-8.25 (D, J = 8.3Hz, 2H), 8.50-8.63 (m, 4H), δ13.30 (S, 2H).

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Abstract

The invention belongs to the field of fluorescent probe preparation technology and application, and particularly relates to a fluorescent probe for detecting silver ions and 2, 4, 6-trinitrophenol. The preparation method comprises the step of synthesizing the fluorescent probe by taking quinaldine acid, 3, 3 '-diaminobenzidine and polyphosphoric acid as raw materials in one step. The fluorescent probe has good selectivity and visual color change on silver ions and 2, 4, 6-trinitrophenol, has detection limits of 1.36 mu M and 0.82 mu M respectively, can be used for identifying the silver ions and the 2, 4, 6-trinitrophenol respectively in environmental water bodies or soil such as tap water and river water, and has a good application prospect.

Description

Technical field [0001] The present invention belongs to the preparation and application of fluorescent probes, and in particular, the present invention relates to fluorescent probes, preparation methods and applications for silver ions and 2,4,6-trinitrophenols. Background technique [0002] 2,4,6-trinitrophenol (TNP) is also known as bitter acid, one of the powerful explosives in nitrofromad explosives (NAES), is widely used in industrial and civil, such as fireworks, leather And the chemical industry such as dyes. It is a potential soil and water pollutant during production, use and transportation. [0003] Since fluorescent probes have a certain advantage in rapid, accurate, convenient and economic, etc.. In recent years, there have been many reports on fluorescence probes to identify TNP, such as fluorescence conjugated polymers, small molecular fluorophore, metal organic skeletons, and aggregated luminescent materials. The small molecular organic fluorescent probe has been w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D401/14C09K11/06G01N21/64
CPCC07D401/14C09K11/06G01N21/643G01N21/6447C09K2211/1029C09K2211/1044G01N2021/6432G01N2021/6439Y02A50/30
Inventor 王斌江帆马祥梅马静
Owner ANHUI UNIV OF SCI & TECH
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