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Novel barium metal organic coordination polymer and preparation method and application of thereof

A coordination polymer, metal-organic technology, applied in the direction of 2/12 group organic compounds without C-metal bonds, indium organic compounds, platinum group organic compounds, etc., can solve difficult preparation, affect particle size, long period and other problems, to achieve the effect of excellent luminous performance and good thermal stability

Active Publication Date: 2016-04-13
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The precipitation method is currently one of the most widely used methods for liquid-phase chemical synthesis of luminescent materials, but the irreversible agglomeration during the drying process affects the particle size, which in turn affects the light conversion performance of the material.
The sol-gel method has high requirements on the particle size of the reaction material, which makes the price of the reaction raw material high, sometimes it is difficult to prepare, the reaction operation is also complicated, and the cycle is long

Method used

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  • Novel barium metal organic coordination polymer and preparation method and application of thereof
  • Novel barium metal organic coordination polymer and preparation method and application of thereof
  • Novel barium metal organic coordination polymer and preparation method and application of thereof

Examples

Experimental program
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Effect test

Embodiment example 1

[0035] Using hydrothermal method to synthesize barium metal organic coordination polymer, its steps are:

[0036] (1) Preparation of Ir 2 (ppy) 4 Cl 2

[0037] Add 0.01 mole of IrCl 3 ·3H 2 O and 0.02 moles of 2-phenylpyridine were dissolved in a mixed solvent consisting of 4.00-4.20 moles of ethylene glycol ether and 2.60-2.80 moles of water, and reacted under reflux for 24 hours to obtain a pale yellow precipitate, which was cooled to room temperature and filtered. Then wash with ethanol and acetone to get Ir 2 (ppy) 4 Cl 2 ;

[0038] The reaction equation is as follows

[0039] 2IrCl 3 ·3H 2 O+4ppy→Ir 2 (ppy) 4 Cl 2 +4H + +4Cl -

[0040] (2) Synthetic Ir(ppy) 2 (Hdcbpy)

[0041] 0.02 mole of H 2 dcbpy and 0.01 mole of Ir obtained in step (1) 2 (ppy) 4 Cl 2 Add to 37.00 moles or more of methanol solution, then add more than 0.052 moles of anhydrous sodium carbonate, reflux for more than 3 hours to obtain an orange solution;

[0042] Then the methanol solvent is evaporated to obtain an ...

Embodiment example 2

[0054] Thermogravimetric analysis and X-ray powder diffraction were used to determine the thermal stability of the material of the present invention. Use Netzsch STA449C thermal analyzer to test the mass change of samples from room temperature to 1100°C at 10°C / min, such as Figure 4 It is the barium metal organic coordination polymer {Ba 3 [Ir 6 (ppy) 12 (dcbpy) 6 (H 2 O) 4 ]}·10H 2 Thermogravigram of O crystal. In addition, heat an appropriate amount of samples at 200°C for 6 hours to perform an X-ray powder test. The obtained spectrum is as follows image 3 As shown, it is similar to the X-ray simulation spectrum of the single crystal ( figure 1 ) Very good overlap, indicating that it can still maintain a stable framework at 200°C and has good thermal stability.

Embodiment example 3

[0056] Use EdinberghAnalyticalinstrumentFLS920 test to obtain optical information.

[0057] {Ba 3 [Ir 6 (ppy) 12 (dcbpy) 6 (H 2 O) 4 ]}·10H 2 Test of O excitation spectrum, fluorescence lifetime and quantum yield test. Such as Figure 5 Shown is the {Ba 3 [Ir 6 (ppy) 12 (dcbpy) 6 (H 2 O) 4 ]}·10H 2 Excitation spectrum of O crystal; Image 6 This is {Ba 3 [Ir 6 (ppy) 12 (dcbpy) 6 (H 2 O) 4 ]}·10H 2 Emission pattern of O crystal.

[0058] As shown in the figure, the maximum excitation wavelength is 468nm, which is in the visible light band; its emission peak is 558nm, which shows yellow light, the fluorescence lifetime is 9.86us, and the quantum yield is 16%, compared to Ir(ppy) 2 (Hdcbpy) (fluorescence lifetime: 7.8us, quantum yield: 6.8%) has been greatly improved.

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Abstract

The invention relates to a novel barium metal organic coordination polymer. A structural formula of the novel barium metal organic coordination polymer is {Ba3[Ir6(ppy)12(dcbpy)6(H2O)4]}.10H2O, wherein the ppy is 2-phenylpyridine, and the dcbpy is 2,2-bipyridine-4,4-dicarboxylic acid ions. The novel barium metal organic coordination polymer disclosed by the invention has the beneficial effects that {Ba3[Ir6(ppy)12(dcbpy)6(H2O)4]}.10H2O crystals are generated; good heat stability and excellent luminous performance are obtained, the fluorescence lifetime is 9.86 mus, and the quantum yield is 16 percent; the maximum excitation position of the novel barium metal organic coordination polymer is in a 468-nm position, and the novel barium metal organic coordination polymer is a photoluminescence material which is capable of utilizing solar energy.

Description

Technical field [0001] The invention relates to a new type of barium metal organic coordination polymer and its preparation method and application. Background technique [0002] Materials, energy and information are the three pillars of the 21st century. As one of the most important materials in human life, luminescent materials have an extremely important and special status. With the further development of science and technology, luminescent materials are widely used in various fields such as chemical industry, medicine and food, electric power, public engineering, aerospace, marine ships and so on. Various new high-tech applications in human daily life will inevitably require some luminescent materials with different compositions and properties. [0003] Currently, most of the popular luminescent materials are based on rare earth elements, which also leads to fewer and fewer rare earth reserves. Due to the excellent photophysical and photochemical properties of phosphorescent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F19/00C09K11/06C07F3/00C07F15/00
CPCC07B2200/13C07F3/003C07F15/004C09K11/06C09K2211/181C09K2211/187
Inventor 罗军华许营营李丽娜
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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