pH fluorescent sensor based on cadmium complex and preparation method thereof

The technology of a fluorescence sensor and a cadmium complex is applied in the field of chemistry, and can solve the problems of poor repeatability of pH sensors, difficult to observe the change of fluorescence intensity, etc., and achieve the effects of easy fluorescence intensity change, high yield and easy observation.

Active Publication Date: 2019-02-01
HUAIYIN TEACHERS COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This pH sensor has poor repeatability and is not easy to observe changes in fluorescence intensity

Method used

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  • pH fluorescent sensor based on cadmium complex and preparation method thereof
  • pH fluorescent sensor based on cadmium complex and preparation method thereof
  • pH fluorescent sensor based on cadmium complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Example: synthesis of 2,4'-tmbpt ligand; 0.04 g (0.15 mmol) of Cd(CH 3 COO) 2 2H 2 O, 0.018 g (0.1 mmol) of 5-hydroxy-isophthalic acid, 0.03 g (0.1 mmol) of 2,4'-tmbpt, a mixture of 0.012 g (0.3 mmol) of NaOH and 8 mL of water in a 15 mL Heat in a PTFE-lined reactor at 130°C for 72 hours; after the reaction, cool to room temperature at a cooling rate of 10°C / h to obtain colorless crystals, which are pH fluorescent sensors based on cadmium-containing complexes , yield 35%.

[0020] The main infrared absorption peaks of the sensor obtained above are: 3351 (s), 3026 (w), 1621 (m), 1567 (s), 1511 (m), 1468 (m), 1419 (s), 1365 (s ), 1299(w), 1268(w), 1201(w), 1131(w), 1012(w), 987(w), 889(w), 838(w), 798(w), 778(w ), 727(w), 692(w), 667(w), 502(w).

[0021] The relevant characterization of the sensor obtained above is as follows:

[0022] (1) Determination of crystal structure: the diffraction data were collected on an Oxford Diffraction Gemini R Ultra diffractometer, ...

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Abstract

The invention discloses a pH fluorescence sensor based on a cadmium-containing coordination compound, and a preparation method thereof, and belongs to the field of chemical technology. The chemical formula of the cadmium-containing coordination compound is [Cd(2,4'-tmbpt)<2>(5-OH-bdc)]*5H<2>O. The preparation method comprises following steps: a mixture of Cd(CH<3>COO)<2>*2H<2>O, 5-hydroxy-isophthalic acid, 2,4'-tmbpt,NaOH, and water is sealed and heated in a reaction still provided with a polytetrafluoroethylene lining; after reaction, the temperature in the reaction still is reduced to room temperature at a cooling speed of 10 DEG C / h so as to obtain a colorless crystal which is the pH fluorescence sensor based on the cadmium-containing coordination compound. According to the preparation method, pH fluorescence sensing performance of the cadmium-containing coordination compound, and application research of the cadmium-containing coordination compound in the field of molecular logic gate are disclosed for the first time; repeatability is high; yield is high; product performance is stable; sensitive pH sensing properties are achieved; it is convenient to observe the change of fluorescence intensity; and molecular logic gates with INH functions can be obtained via design.

Description

technical field [0001] The invention belongs to the technical field of chemistry and relates to a coordination polymer, in particular to a pH fluorescent sensor based on a cadmium-containing complex and a preparation method thereof. Background technique [0002] Coordination polymers have attracted extensive attention due to their diverse topological structures and potential applications in catalysis, adsorption, luminescence, and magnetism (J. C. Jiang, O. M. Yaghi, Chem. Rev. . 2015, 115 , 6966). Among various applications, fluorescent coordination polymer-based chemical sensing has received special attention (L. L. Zhang, Z. X. Kang, X. L. Xin, D. F. Sun, CrystEngComm 2016, 18 , 193). Because coordination polymers are composed of metal ions or metal clusters and organic ligands, and there are almost infinite combinations of organic ligands and metal ions or metal clusters, coordination polymers have easy-to-adjust physical and chemical properties. This property faci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06C09K2211/188G01N21/6428
Inventor 阚卫秋温世正
Owner HUAIYIN TEACHERS COLLEGE
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