Bimetallic organic gel and preparation and application thereof in detection of cyanide ions

An organogel, bimetallic technology, applied in the field of anion detection, can solve problems such as large demand and no supramolecular gel

Inactive Publication Date: 2015-03-25
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although currently reported counter anions (such as F - and AcO - ) There are many organogels with sensing capabilities, but RSGs that can selectively detect specific anions are in great demand
For example: well known CN - Although a highly toxic chemical in organisms and the environment, there is no CN - Reports of Supramolecular Gels in Response

Method used

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  • Bimetallic organic gel and preparation and application thereof in detection of cyanide ions
  • Bimetallic organic gel and preparation and application thereof in detection of cyanide ions
  • Bimetallic organic gel and preparation and application thereof in detection of cyanide ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 5.0 mmol of 3,4,5-tris(hexadecyloxy)benzoic hydrazide, 5.0 mmol of 1-naphthaldehyde and 30 mL of absolute ethanol (as solvent) to a 50 mL reaction bottle, and 0.12~0.24 mL of ice Acetic acid (catalyst), reflux and stir for 8h, suction filter after cooling to obtain a white solid; recrystallize with chloroform-ethanol to obtain gel factor G .

[0029]Weigh 10 mg (0.01 mmol) of gelling factor G and add it into 1 mL of ethanol, heat it to dissolve, and form a white organic gel OG after cooling to room temperature (the mass percentage of gelling factor is 1%). Organogel OG is non-fluorescent. Then add 0.01 mmol of Mg 2+ ethanol solution to make it diffuse slowly; after standing for a period of time, Mg 2+ The ethanol solution completely infiltrates into the gel, which is the magnesium metal organogel MgG, and it is relatively stable. The magnesium metal organogel has a strong bright blue fluorescence; then add 0.01 mmol Cu to it 2+ ethanol solution to make it diffus...

Embodiment 2

[0032] The preparation of gel factor G is the same as in Example 1.

[0033] Weigh 10 mg (0.01 mmol) of gelling factor G and add it into 1 mL of ethanol, heat it to dissolve, and form a white organic gel OG after cooling to room temperature (the mass percentage of gelling factor is 1%). Organogel OG has no fluorescence under the irradiation of 365nm ultraviolet lamp. Then add (0.02 mmol) Mg 2+ and (0.02 mmol) Cu 2+ The ethanol solution was shaken to disperse evenly, and the magnesium-copper bimetallic organogel MgCuG was formed after cooling to room temperature. The organogel MgCuG has no fluorescence under the irradiation of 365nm ultraviolet lamp.

[0034] Addition of CN to bimetallic organogel MgCuG - In aqueous solution, MgCuG gel produced strong bright blue fluorescence, while F - , Cl - , Br - , I - , AcO - , H 2 PO 4 - , N 3 - , SCN - , HSO 4 - , ClO 4 - The addition of isoanionic aqueous solution cannot produce similar fluorescence change phenomenon....

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Abstract

The invention provides organic metal gel for detecting CN<->. The organic metal gel is metal organic gel MgCuG which is prepared from 1-naphthyl-3,4,5-tri(hexadecyloxy)benzoyl hydrazone as a gelator matched with metal ions Mg<2+> and Cu<2+>. When a water solution of CN<-> is added to the bimetallic organic gel, the organic gel generates relatively strong light blue fluorescence, and a similar fluorescence change phenomenon cannot be generated by addition of other anions, and therefore, the bimetallic organic gel can achieve the single selective response on the CN<->, can be used as a solid soft material of an intelligent sensor of the CN<->, and is used for detecting the CN<->; the defects in identification of the CN<-> in the solution are overcome; and the bimetallic organic gel is easy to store and carry, and convenient to use, and has the certain potential application value.

Description

technical field [0001] The invention belongs to the technical field of anion detection, and relates to a - Detected organometallic gels, specifically a bimetallic organogel based on the 1-naphthalene-3,4,5-tris(hexadecyloxy)benzoylhydrazone factor; the invention also relates to the bimetallic Preparation of organogel and its detection in fluorescence CN - in the application. Background technique [0002] Stimuli-responsive supramolecular gels (RSGs) have attracted increasing attention as a new class of smart materials for their potential applications in chemistry, drug carriers, biomaterials, surface science, and electronic displays. Molecular gels are formed by the self-assembly of small molecules through non-covalent weak interactions. Due to the reversible kinetics of non-covalent interactions, RSGs have certain responsiveness such as sensing. Although RSGs formed by organic molecules have been reported a lot, metal-based RSGs have been rarely reported in recent years...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F19/00G01N21/64
Inventor 林奇杨青平孙斌张有明魏太保
Owner NORTHWEST NORMAL UNIVERSITY
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