A colorimetric fluorescent dual-channel silver ion sensor molecule and its synthesis and application
A sensor and silver ion technology, which is applied in the fields of chemical synthesis and anion detection, can solve the problems of high cost, restricting the large-scale promotion and use of sensor molecules, and strong professionalism
Active Publication Date: 2018-11-09
南通诺林新科技有限公司
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Problems solved by technology
At present, there have been many silver ion sensors designed and synthesized, but due to their strong specialization, high cost and long recognition time, these factors have restricted the large-scale promotion and use of many sensor molecules.
Method used
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Embodiment Construction
[0041] The synthesis, characterization and application of the silver ion sensor of the present invention to detect anions in aqueous solution will be further described through specific examples below.
[0042] Instruments and reagents
[0043] 1 H NMR was measured using a Mercury-400BB nuclear magnetic resonance instrument, and TMS was used as an internal standard. IR was measured using a Digilab FTS-3000 FT-IR infrared spectrometer (KBr tablet); the melting point was measured using an X-4 digital display microscopic melting point analyzer (the thermometer was not calibrated); the fluorescence spectrum was measured using a RF-5301 fluorescence spectrometer from Shimadzu Corporation, Japan Record.
[0044] The cations used were perchlorate, and the solvent was (DMSO / H 2 O(1:1, v / v) HEPES buffer solution (pH=7.2) (analytical grade). Other reagents were commercially available analytically pure.
[0045] 1. Synthesis of silver ion fluorescent sensor
[0046] Add 2 mmol of 2,...
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Abstract
The invention designs and synthesizes a sensor molecule capable of achieving colorimetric and fluorescent dual-channel silver ion detection, namely 2-phenyl-1H-imidazole[4,5-b]phenazine. According to the sensor molecule, intermolecular hydrogen bonding is used for forming a dimer, a supermolecular self-assembly system is formed between phenazine rings through the pi-pi accumulation function, and accordingly a solution of a host molecule is made to emit strong fluorescent light; imidazole and the phenazine rings serve as a recognition functional site, the molecule can achieve highly selective recognition of silver ions in a water-containing medium, and the recognition process is not interfered with other positive ions. Besides, after the silver ions are added at room temperature, the fluorescent light intensity of the solution is quickly reduced within 3 seconds, and a good naked eye recognition effect can be achieved. Ag+ detection testing paper manufactured by means of the sensor molecule can be used for conveniently and quickly detecting silver ions in an environment system.
Description
technical field [0001] The invention relates to a silver ion sensor molecule, in particular to a sensor molecule capable of colorimetric fluorescent dual channels being covered with silver ions—2-phenyl-1H-imidazol[4,5-b]phenazine; the present invention simultaneously It also relates to the application of the silver ion sensor molecule in aqueous solution to identify silver ions by fluorescence colorimetry, and belongs to the field of chemical synthesis and the technical field of anion detection. Background technique [0002] With the rapid development of science and technology, silver ions and their compounds are widely used in jewelry, electroplating, photosensitive materials and other fields. With the expansion of the use of silver ions and their compounds, the amount of silver ions discharged into the environment has gradually increased. As time goes by, the migration and diffusion of silver ions in wastewater in the environment not only pollutes natural water bodies, bu...
Claims
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IPC IPC(8): C07D487/04C09K11/06G01N21/64G01N21/78
CPCC07D487/04C09K11/06C09K2211/1044G01N21/643G01N21/78G01N2021/6432
Inventor 魏太保张海丽张有明林奇
Owner 南通诺林新科技有限公司