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MOFs fluorescent probe for detecting aromatic amine VOC as well as preparation method and application of MOFs fluorescent probe

A fluorescent probe, aromatic amine technology, applied in fluorescence/phosphorescence, chemical instruments and methods, luminescent materials, etc., can solve the problems of complicated catalyst synthesis, unfavorable material application, few reports on detection, etc., and achieves simple preparation method, Low cost and good effect

Active Publication Date: 2021-08-06
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in general, the synthesis of organic ligands with large π-conjugated systems is cumbersome or requires the use of more expensive catalysts, which is not conducive to the subsequent application of materials.
[0004] At room temperature, aromatic amines have a low vapor pressure. At present, most of the reports on the fluorescence detection of aromatic amines are detected under liquid conditions, but there are few reports on the detection under gaseous conditions.

Method used

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  • MOFs fluorescent probe for detecting aromatic amine VOC as well as preparation method and application of MOFs fluorescent probe
  • MOFs fluorescent probe for detecting aromatic amine VOC as well as preparation method and application of MOFs fluorescent probe
  • MOFs fluorescent probe for detecting aromatic amine VOC as well as preparation method and application of MOFs fluorescent probe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] MOFS fluorescent probe detecting aromatic amines VOC and preparation:

[0031] 1) Preparation of the organic ligand: 1 nmol o-vanilla, 1 nmol 4-imidazole benzide hydrazide was heated in 40 ml of anhydrous ethanol to reflux for 6 h, cooled, washed with methanol 2 ~ 3 times, 60 ° C dry 12H, obtained N- (2-hydroxy-3-methoxybenzyl) -4- (imidazolyl) benzoyl hydrazide ligand (IMZ ligand);

[0032] 2) Preparation of fluorescent probes: 0.2 nmol N- (2-hydroxy-3-methoxybenzyl) -4- (imidazolyl) benzyl hydrazide (IMZ ligand) and 0.15 nmol cadmium chloride Soluble in a 1.5 ml DMF solution, then slowly pour the IMZ ligand solution into a cadmium chloride solution, ultrasound form a uniform solution, and heated 100 ° C after sealed for 3 days, the program cooling, filtered, DMF was washed 2 times, MECN wash it once , Dry, get clean yellow crystals (MECS-2);

[0033] Washing clean MECS-2 was soaked for two days with acetonitrile, and a new acetonitrile was replaced once a day, filtered, d...

Embodiment 2

[0036] MOFS fluorescent probe detecting aromatic amines VOC and preparation:

[0037] 1) Preparation of the organic ligand: 1.5 nmol 4-imidazole benzide hydrazine in 40 ml of anhydrous ethanol to heat 60 ° C for 8 h, cooled, washed with methanol 2 to 3 times, 60 ° C It was dried for 12 h to give N- (2-hydroxy-3-methoxybenzyl) -4- (imidazolyl) benzoyloride ligand (IMZ ligand);

[0038] 2) Preparation of fluorescent probes: 0.2 nmol N- (2-hydroxy-3-methoxybenzyl) -4- (imidazolyl) benzyl hydrazide (IMZ ligand) and 0.15 nmol cadmium chloride The object is dissolved in 2 ml DMF solution, and then the IMZ ligand solution was slowly poured into a cadmium chloride water compound, and the ultrasound forms a uniform solution, and the heated reaction was heated at 90 ° C after sealed 2.5 days, the procedure was cooled, filtered, DMF was washed twice, 2 times, Mecn wash it once, dry, get clean yellow crystals (MECS-2);

[0039] The washed clean MECs-2 was soaked for two days with methanol, an...

Embodiment 3

[0042] MOFS fluorescent probe detecting aromatic amines VOC and preparation:

[0043]1) Preparation of the organic ligand: 1 nmol o-vanilla, 1.5 nmol 4-imidazole-hydrazine hydrazide was heated in 40 ° C for 40 ° C for 10 h, cooled, washed with methanol 2 ~ 3 times, 60 ° C It was dried for 12 h to give N- (2-hydroxy-3-methoxybenzyl) -4- (imidazolyl) benzoyloride ligand (IMZ ligand);

[0044] 2) Preparation of fluorescent probes: 0.2 nmol N- (2-hydroxy-3-methoxybenzyl) -4- (imidazolyl) benzyl hydrazide (IMZ ligand) and 0.15 nmol cadmium chloride Soluble in a 1.5 ml DMF solution, then slowly pour the IMZ ligand solution into a cadmium chloride solution, ultrasound form a uniform solution, and heated 100 ° C after sealed for 3 days, the program cooling, filtered, DMF was washed 2 times, MECN wash it once , Dry, get clean yellow crystals (MECS-2);

[0045] Washing MECs-2 was soaked for two days with trichloromethane, and a new trichloromethane was replaced once a day, filtered, dried t...

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Abstract

The invention belongs to the technical field of metal organic framework materials, and particularly relates to an MOFs fluorescent probe for detecting aromatic amine VOC as well as a preparation method and application of the MOFs fluorescent probe. The MOFs fluorescent probe is an infinite network structure material formed by connecting a cadmium salt and an organic ligand in a coordination bond manner, and the cadmium salt comprises cadmium chloride or cadmium chloride hydrate; the organic ligand comprises an N-(2-hydroxy-3-methoxybenzylidene)-4-(imidazolyl) benzoyl hydrazine ligand; the MOFs fluorescent probe has the advantages that the fluorescent effect of the MOFs fluorescent probe on aromatic amine VOC is obviously enhanced, the MOFs fluorescent probe not only has fluorescence enhanced detection on liquid aromatic amine, but also has detection effect on gaseous aromatic amine, and as a porous multifunctional material, the MOFs fluorescent probe shows completely reversible behavior on adsorption of aniline steam at room temperature, the preparation method is simple, the cost is low, the effect is good, and the material is a promising aniline vapor light-emitting sensor and adsorbent material, and has high practical application value.

Description

Technical field [0001] The present invention belongs to the technical field of metal organic skeleton material, and more particularly to a MOFS fluorescent probe detecting an aromatic amine VOC and a preparation method thereof and a method thereof. Background technique [0002] In recent years, with the development of human society, it is inevitable to bring a variety of environmental issues. In particular, volatile gas (VOCs) has a potential impact on the atmospheric environment, but also affect the indoor gas environment. They can seriously endanger the health of human body. The harmful gases include aromatic amines such as aniline, N-methyl aniline, etc. from leather fields, often induced human cell carcinoma thus to endanger human health, so the detection of aromatic amines in the environment is particularly important. The current detection method commonly used has a chromatography, an electrochemical analysis method, a gas-based method, and other aromatic amines. However, th...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06G01N21/643C09K2211/188Y02A50/20
Inventor 洪旭佳杨芳萍林紫微马琳媛
Owner SOUTH CHINA NORMAL UNIVERSITY
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