Univalent gold molecule cluster, preparation method, porous polymer film based on univalent gold molecule cluster, film-based cyanide detection method
A technology of porous polymers and detection methods, applied in the fields of analytical materials, organic chemistry, and measuring devices, which can solve the problems of cumbersome synthesis process, inefficiency, complex actual sample system, etc., and achieve reduced production costs, easy operation, and sensitivity The effect of rapid detection
Active Publication Date: 2014-02-12
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing cyanide colorimetric detection method, which are cumbersome in the preparation and synthesis process and cannot be effectively used in complex actual sample systems, and provide a monovalent gold molecular cluster and its preparation method and based on monovalent gold molecular Clustered porous polymer film and cyanide detection method based on the film
Method used
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Embodiment 1
[0035] Example 1: Preparation of 0.2M HAuCl 4 Add 0.5ml of ethanol solution of 3-mercapto-1,2,4-triazole into 1ml of ethanol solution of 3-mercapto-1,2,4-triazole (0.1M), add secondary water after stirring for 2 hours, centrifuge and wash the obtained precipitate, redisperse in DMF solvent middle.
Embodiment 2
[0036] Example 2: Preparation of 0.2M HAuCl 4 Add 0.5ml of ethanol solution of 3-mercapto-1,2,4-triazole into 2.5ml of ethanol solution of 3-mercapto-1,2,4-triazole (0.1M), stir for 2 hours, add secondary water, centrifuge and wash the obtained precipitate, redisperse in DMF in solvent.
Embodiment 3
[0037] Example 3: Preparation of 0.2M HAuCl 4 Add 0.5ml of ethanol solution of 3-mercapto-1,2,4-triazole into 5ml of ethanol solution of 3-mercapto-1,2,4-triazole (0.1M), add secondary water after stirring for 2 hours, centrifuge and wash the obtained precipitate, redisperse in DMF solvent middle.
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The invention relates to a univalent gold molecule cluster, a preparation method, a porous polymer film based on univalent gold molecule cluster, a film-based cyanide detection method. The chemical composition of the univalent gold molecule cluster is [Au(I)MTA]n, wherein MTA is a ligand; the mole ratio of Au(I) to ligand in the univalent gold molecule cluster is 1:1; n is a natural number. The porous polymer film based on univalent gold molecule cluster has the following advantages in the detection of cyanide that (1) through the porosity property of the film, the contact sites with to-be-detected objects can be greatly enhanced, the diffusion and migration of the to-be-detected objects are favorable, and therefore, the fast detection on the sensitivity of the cyanide can be realized; (2) the used polymer polyacrylonitrile has stable blue light as a reference, thus realizing the colorimetric and reliable detection on the cyanide; (3) the preparation method of the film is simple and economic, and the production cost can be greatly lowered. By utilizing the film, the colorimetric and sensitive detection of cyanide in red wine, coffee and other complicated systems can be realized.
Description
technical field [0001] The invention belongs to the field of cyanide analysis and detection, and in particular relates to a monovalent gold molecular cluster and a preparation method, a porous polymer film based on the monovalent gold molecular cluster, and a cyanide detection method based on the film. Background technique [0002] Cyanide is highly toxic and can be fatal in a short period of time. It is one of the most highly toxic substances currently known. At the same time, due to the wide use of cyanide in metallurgy, tanning and other industrial fields, a large amount of cyanide is produced and utilized every year, and the unreasonable discharge poses a serious hazard to the environment and human health. For this reason, the World Health Organization stipulates that the cyanide content in drinking water shall not exceed 1.9μM. On the other hand, because cyanide is cheap and easy to obtain, and has a rapid onset of toxicity, it may be used as a chemical weapon by terro...
Claims
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Login to View More IPC IPC(8): C07D249/12C08J9/00C08L33/20C08K5/37G01N21/78
CPCC07D249/12C08J9/00C08J2333/20C08K5/0091C08L2203/16G01N21/78G01N2021/775C08L33/20
Inventor 宗成华逯乐慧
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI