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Electrochemical preparation and applications of rare earth coordination polymer film

A technology of coordination polymers and films, applied in electrolysis process, electrolysis components, electrolysis organic production, etc., can solve the problems of difficult to obtain molecular dispersion, unfavorable performance of rare earth complex fluorescent probes, and complex agglomeration. , to achieve the effect of simple operation, convenient and quick measurement, and simple method

Inactive Publication Date: 2013-02-20
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that when the concentration of the complex is high, the complex itself is prone to agglomeration, so it is difficult to obtain molecular dispersion, which is not conducive to giving full play to the performance of the fluorescent probe of the rare earth complex

Method used

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  • Electrochemical preparation and applications of rare earth coordination polymer film
  • Electrochemical preparation and applications of rare earth coordination polymer film
  • Electrochemical preparation and applications of rare earth coordination polymer film

Examples

Experimental program
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Effect test

Embodiment 1

[0048] New compound: preparation and crystal structure characterization of europium biquinoline dicarboxylic acid coordination polymer (I).

[0049] (1) 0.039g 2,2'-biquinoline-4,4'-dicarboxylic acid (H 2 BQDC) was dissolved in 10mL of DMF to obtain solution A;

[0050] (2) 0.026g EuC1 3 ·6H 2 O was dissolved in 10mL DMF to obtain solution B;

[0051] (3) Solution A and solution B were mixed, and the resulting mixture was transferred to an autoclave, and reacted for 3 days under solvothermal conditions at 80° C., filtered after natural cooling, and washed twice with 3 mL DMF to obtain light yellow compound I, The yield was 79%.

[0052] Single crystal structure analysis shows that the compound is triclinic, P-1 space group, α=11.122(1), b=11.938(1), α=74.869(2), β=76.480(2), γ=73.859(2)°, Z=2, its molecular formula is {[Eu 2 (BQDC) 3 (DMF) 3 (H 2 O)]·0.5DMF·H 2 O} n (I). Rare earth coordination polymer I has a two-dimensional layered structure, and adjacent tw...

Embodiment 2

[0066] Film preparation route 2: a method for preparing a terbium terephthalic acid coordination polymer (II) film, comprising the following steps:

[0067] (1) Preparation of electrolyte: Tb(NO 3 ) 3 0.010M, terephthalic acid (H 2 BDC) 0.015M and NH 4 NO 3 0.050M, the solvent is a mixed solvent of DMF and water (volume ratio is 100:1);

[0068] (2) Use graphite rod as auxiliary electrode (anode), FTO glass as working electrode (cathode), constant current 0.20mA / cm 2 , electrolysis time 20min;

[0069] (3) After the electrolysis, a white, dense film is uniformly deposited on the surface of the FTO glass. Its powder diffraction pattern and [Tb 2 (BDC) 3 4H 2 Powder Diffraction of O]n(II) Single Crystal Simulation Figure 1 To (if Figure 9 , refer to: J.Am.Chem.Soc.1999, 121, 1651-1657), confirmed that the prepared thin film is rare earth coordination polymer II thin film, the microscopic morphology of this thin film is shown in Figure 10 .

Embodiment 3

[0071] Applications of Rare Earth Coordination Polymer Films:

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Abstract

The present invention discloses electrochemical preparation and applications of a rare earth coordination polymer film. The preparation method for the rare earth coordination polymer film comprises two ways: (A) an electrodeposition coupled hydrothermal / solvothermal method: preparing a layer of a rare earth oxide film or a layer of a rare earth hydroxide film on the surface of an electric conduction substrate material, and adopting a solvothermal method or a hydrothermal method to grow a layer of a rare earth coordination polymer film on the surface of the rare earth oxide film or the rare earth hydroxide film; and (B) a direct electrochemical deposition method: selecting a suitable electrolyte system, changing overpotential of the related ions on an electrode, and directly depositing on a cathode to obtain the rare earth coordination polymer film. According to the rare earth coordination polymer film, a metal organic framework microporous structure of the coordination polymer can be maintained, regular film morphology can be formed, and the electrochemical preparation can be expected to be applied in gas absorption, molecule ion identification, shape-selective catalysis, material separation and other fields.

Description

technical field [0001] The invention relates to a preparation method of a coordination compound thin film, in particular to an electrochemical method for preparing a rare earth coordination polymer thin film, and its application as a fluorescent probe device in ion detection. Background technique [0002] There are 17 rare earth elements, including 15 elements from lanthanum (La) with atomic number 57 to lutetium (Lu) with 71 plus scandium (Sc) with atomic number 21 and yttrium with atomic number 39 ( Y). Since the rare earth elements have the same electronic structure in the outer layer, and the electronic layer structure of the inner 4f electron energy level is similar, the complexes containing rare earth elements exhibit many unique physical and chemical properties, such as: high coordination, magnetism, optical Luminescence, photoelectric conversion and other properties, so it has been widely used in the fields of light, electricity, magnetism, catalysis and so on. In ...

Claims

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Application Information

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IPC IPC(8): C25B3/12C25B3/13
Inventor 杨洋溢朱艺敏曾承辉褚天舒
Owner SUN YAT SEN UNIV
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