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A kind of cadmium-based complex and its preparation method and application

A technology of complexes and methyl groups, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of unfavorable phosphor application and high price

Active Publication Date: 2021-04-23
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usual phosphorescent materials need to introduce metal elements such as Pt and Ir, which are expensive and are not conducive to the application of phosphors with long triplet excited state lifetimes.

Method used

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  • A kind of cadmium-based complex and its preparation method and application
  • A kind of cadmium-based complex and its preparation method and application
  • A kind of cadmium-based complex and its preparation method and application

Examples

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preparation example Construction

[0030] The present invention also provides a method for preparing the cadmium-based complex described in the above technical scheme, comprising the following steps:

[0031] Mix 1,2,4-benzenetricarboxylic acid, 1,4-bis(imidazol-1-ylmethyl)benzene, and cadmium salt with water, and then carry out hydrothermal reaction to obtain the cadmium-based complex.

[0032] In the present invention, the molar ratio of 1,2,4-benzenetricarboxylic acid, 1,4-bis(imidazol-1-ylmethyl)benzene and cadmium salt is preferably 1:2:2~4, more preferably It is 1:2:3. The present invention has no special limitation on the specific type of the cadmium salt, and the water-soluble chromium salt well known to those skilled in the art can be used, specifically, such as chromium nitrate.

[0033] In the present invention, the dosage ratio of the cadmium salt to water is preferably 1g:15-30mL, more preferably 0.31g:8mL.

[0034] In the present invention, the temperature of the hydrothermal reaction is prefera...

Embodiment 1

[0042] Mix 0.11g of 1,2,4-benzenetricarboxylic acid, 0.24g of 1,4-bis(imidazol-1-ylmethyl)benzene and 0.31g of cadmium nitrate tetrahydrate with water (8mL) and seal it in a 25mL reaction kettle , heated to 150°C at a rate of 5°C per hour, maintained at this temperature for 72 hours, and then naturally cooled to room temperature to obtain colorless blocky crystals, which were washed and dried in turn to obtain the target product - Cd(HBTC)( BIMB) (cadmium-based complexes).

[0043] The obtained cadmium-based complexes were characterized as follows:

[0044] (1) Crystal structure determination of cadmium-based complexes

[0045] A single crystal with a suitable size is selected for X-ray diffraction experiment at room temperature. Diffraction data collected on a BrukerApex II X-ray single crystal diffractometer, MoKα rays monochromated with a graphite monochromator by to collect diffraction data. All data were corrected by Lp factor and empirical absorption. The crysta...

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Abstract

The invention provides a cadmium-based complex, which belongs to the field of complex materials and crystalline materials. The chemical formula of the cadmium complex of the present invention is: {[Cd(HBTC)(BIMB)]} ∞ , where BTC is 1,2,4-benzenetricarboxylic acid, and BIMB is 1,4-bis(imidazol-1-ylmethyl)benzene. The invention utilizes organic phosphors and cheap metal compounds (cadmium) to construct complexes through coordination bonds, and at the same time can fix the phosphors in the rigid framework, reduce energy loss caused by thermal vibration, promote intersystem jumping, and improve phosphorescence performance And stability, it has important practical application value for the development of cheap metal complexes of non-noble metals and non-rare earth metals with long phosphorescence lifetime. The data in the examples show that the cadmium-based complex provided by the present invention obtains a phosphorescence emission peak at 527nm under the excitation of a 350nm transient light source, and the phosphorescence lifetime is 1.24ms.

Description

technical field [0001] The invention relates to the technical field of complex materials and crystalline materials, in particular to a cadmium-based complex and its preparation method and application. Background technique [0002] Phosphors with long triplet excited state lifetimes, whose excitons can migrate over long distances, increase the generation of free charges, and thus have broad application prospects in optoelectronic fields such as photovoltaic devices, photocatalytic reactions, optical storage, and molecular sensing. [0003] At present, the phosphorescent compounds mainly focus on platinum, iridium and other noble metals and rare earth metal complexes that emit light from the metal center. Common phosphorescent materials need to introduce metal elements such as Pt and Ir, which are expensive, which is not conducive to the application of phosphors with long triplet excited state lifetimes. Contents of the invention [0004] In view of this, the object of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C08G83/00
CPCC08G83/008C09K11/06C09K2211/188
Inventor 常新红赵颖杨晓刚马录芳
Owner LUOYANG NORMAL UNIV