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Organic bi-metal gel capable of recognizing cyanide?ion through fluorescent colorimetric method, preparation method and applications thereof
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A technology of cyanide ion and organic gel factor, which is applied in the field of anion detection and can solve the problems of complex operation, expensive equipment, and limited application
Inactive Publication Date: 2014-03-05
NORTHWEST NORMAL UNIVERSITY
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Problems solved by technology
So far, although people have proposed a variety of methods for detecting cyanideion, many of them require expensive instruments and complicated operations, which severely limit the application of these methods
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Embodiment 1
[0036] 1. Synthesis of gelling factor 1-naphthalene-3,4,5-tris(hexadecyloxy)benzoylhydrazone:
[0037] Add 30mL of absolute ethanol, 5.0mmol of 3,4,5-tris(hexadecyloxy)benzohydrazide, 5.0mmol of 1-naphthaldehyde, and 0.01-0.05mL of glacial acetic acid into a 50mL reaction bottle, and stir at reflux for 3- After cooling for 8 hours, filter with suction and recrystallize from chloroform-ethanol to obtain a white solid product which is 1-naphthalene-3,4,5-tris(hexadecyloxy)benzoylhydrazone. Yield: 75%.
[0038] m.p.89-91℃, 1 H-NMR (CDCl 3 ,400MHz)δ9.59(s,H,=CH), .043(s,H,-NH),8.691~8.672(m,8H,-ArH),7.109(s,2H,-phH),4.013~ 3.885(m,6H,-OCH 2 ),1.803~1.030(m,72H,-C 12 h 24 ),0.894~0.862(m,9H,-CH 2 CH 3 ).IR(KBr,cm -1 ) v :3449.924(-NH),1715.631(C=O),1648.878(CH=N).MS: m / z :996.1[C 66 h 110 N 2 o 4 +H + ];CalcdforC 66 h 110 N 2 o 4 :995.59.
[0039] 2. Preparation of organobimetallic gels
[0040] Add 12mg of gelling factor L1 into 1mL of ethanol, heat to disso...
Embodiment 2
[0044] 1. Synthesis of gelling factor 1-naphthalene-3,4,5-tris(hexadecyloxy)benzoylhydrazone: same as Example 1
[0045] 2. Preparation of organobimetallic gels
[0046] Add 12mg of L1 to 1mL of ethanol, heat it to dissolve, and become a white solution, and then add Ca in a molar amount twice the gel factor 2+ ethanol solution, gel factor 4 times the molar amount of Cu 2+ ethanol solution, the white solution immediately turns dark green, shake well, and after cooling to room temperature, a dark green organic bimetallic gel OMG1 is formed;
[0047] 3. Detection of cyanide ion: with embodiment 1.
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Abstract
The invention discloses an organic bi-metal gel capable of recognizing cyanic group ions through a fluorescent colorimetric method. The gel is prepared by dissolving a gelator, namely 1-naphthyl-3,4,5-tri(hexadecyloxyl) benzoyl hydrazone, Ca<2+>, and Cu<2+> into an organic solvent, and cooling to the room temperature so as to form the organic bi-metal gel. When negative ions are added into the organic bi-metal gel, only CN<-> can convert the color of the organic bi-metal gel from dark green to tawny, and very strong fluorescence is generated at the same time; other negative ionaqueous solution do not change the color of the organic bi-metal gel, and no fluorescence is generated; so the organic bi-metal gel can recognize the CN<-> in water liquid through a fluorescent colorimetric method in a mono-selectivity way, so that a person can quickly and conveniently detect CN<-> in water through his naked eyes.
Description
Technical field [0001] The present invention belongs to the field of anion detection, which involves an organic bipolar gel that detects cyanocytic ions, especially an organic dual metal gel with fluorescence -color recognition of cyanocytes.The application of glue in the detection of cyanone ions. Background technique [0002] Cyanide is widely used in the process of metallurgy, construction, electroplating and other chemical processes, and plays an important role in industrial production.However, cyanide has strong toxicity and is very easy to be absorbed by the human body. It can enter the human body through mouth, respiratory tract or skin.Cyanide enters the stomach. Under the dismissal of the gastric acid, it can be immediately hydrolyzed into hydrocyanic acid and is absorbed.After this substance enters the blood circulation, the FE of the cytochrome oxidase in the blood 3+ With CN - Combine, generate cyanide high -speed rail cell pigmeal oxidase, loses the ability to transm...
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