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Organic-inorganic hybrid metal halide luminescent material and preparation method thereof

A technology of metal halides and luminescent materials, applied in luminescent materials, zinc organic compounds, chemical instruments and methods, etc., can solve the problems of low quantum efficiency of photoluminescence, and achieve simple preparation methods, easy large-scale promotion, and chemical properties stable effect

Pending Publication Date: 2022-08-09
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] As mentioned above, Zn has the characteristics of enhancing the stability and photoluminescence quantum efficiency of organic-inorganic hybrid metal halides, but the photoluminescence quantum efficiency of single-component Zn-based organic-inorganic hybrid metal halides is usually low

Method used

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  • Organic-inorganic hybrid metal halide luminescent material and preparation method thereof
  • Organic-inorganic hybrid metal halide luminescent material and preparation method thereof
  • Organic-inorganic hybrid metal halide luminescent material and preparation method thereof

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Embodiment 1

[0038] The chemical composition formula of this embodiment is (C 9 H 15 N 3 )ZnCl 4 The preparation method of the organic-inorganic hybrid metal halide light-emitting material is as follows:

[0039] Dosing according to stoichiometric ratio, weighing high-purity ZnCl separately 2 Compound powder raw material, weighed organic 1-(2-pyridyl) piperazine (C 9 H 13 N 3 ) solution, measure HCl acid. The measured organic 1-(2-pyridyl) piperazine solution and ZnCl 2 The powder raw materials of the compound are mixed in a container, and a certain amount of HCl acid solution is added to the above organic 1-(2-pyridyl) piperazine solution and ZnCl 2 In the container in which the powdered raw material is located. Then, the obtained mixed solution is heated, heated to a temperature of 70-90 ° C and continuously stirred until the mixture inside is completely dissolved to obtain a clear solution. -4 days to get what you need (C 9 H15 N 3 )ZnCl 4 Crystals and residual solutions, t...

Embodiment 2

[0042] The chemical composition formula of this embodiment is (C 9 H 15 N 3 )ZnCl 4 : Mn 2+ The preparation method of the organic-inorganic hybrid metal halide light-emitting material is as follows:

[0043] Dosing according to stoichiometric ratio, weighing high-purity ZnCl separately 2 and MnCl 2 Compound powder raw material, weighed organic 1-(2-pyridyl) piperazine (C 9 H 13 N 3 ) solution, measure HCl acid. The measured organic 1-(2-pyridyl) piperazine solution and ZnCl 2 Compounds and MnCl 2 The powder raw materials of the compound are mixed in a container, and a certain amount of HCl acid solution is added to the above organic 1-(2-pyridyl) piperazine solution and ZnCl 2 and MnCl 2 In the container in which the powdered raw material is located. Then, the obtained mixed solution is heated, heated to a temperature of 70-90 °C and continuously stirred until the mixture inside is completely dissolved to obtain a clear solution. -4 days to get what you need (C ...

Embodiment 5

[0048] Example 5 Taking an organic-inorganic hybrid metal halide material prepared by a cooling crystallization method as an example, the thermal quenching resistance of the organic-inorganic hybrid material was tested.

[0049] Table 2

[0050] Example chemical composition measure temperature Percent (relative room temperature strength) 5 (C 9 H 15 N 3 )ZnCl 4

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Abstract

The invention discloses an organic-inorganic hybrid metal halide luminescent material and a preparation method thereof, and belongs to the field of luminescent materials. The luminescent material is a hybrid metal halide luminescent material based on 1-(2-pyridyl) piperazine, the chemical composition formula of the luminescent material is (C9H15N3) ZnCl4 and (C9H15N3) ZnCl4: Mn < 2 + >, and C9H15N3 represents a cation of the 1-(2-pyridyl) piperazine. According to the present invention, the organic matter 1-(2-pyridyl) piperazine is adopted as the organic ligand of the luminescent material, the excitation wavelength range is 220-390 nm, the emission wavelength coverage is 370-600 nm, and the emission peak values are 400-420 nm and 500-550 nm; the preparation method disclosed by the invention is simple in process, low in raw material cost and easy for large-scale technical popularization, and the material has high thermal quenching temperature and relatively high luminous efficiency. The luminescent material can be used for manufacturing luminescent devices and applied to the fields of fluorescent powder, temperature indication and the like.

Description

technical field [0001] The invention relates to the technical field of solid-state lighting and temperature indication, in particular to the preparation methods of two organic-inorganic hybrid metal halides based on 1-(2-pyridyl)piperazine ligands and their application in the field of optoelectronics. Background technique [0002] Low-dimensional organic-inorganic hybrid metal halides, as a new type of optoelectronic materials, have high structural flexibility and compositional coordination, and have been demonstrated in solid-state lighting, scintillation, nonlinear optics, thermometry, and solar cells. Has a wide range of applications. [0003] Unfortunately, most materials suffer from low absorptivity, poor thermal stability, and environmental toxicity, which greatly hinder their practical applications in solid-state lighting. The thermal stability of organic-inorganic hybrid metal halides has been an insurmountable obstacle. In recent years, metallic zinc has received ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C09K11/06C09K11/61
CPCC07F3/003C09K11/06C09K11/615C09K2211/188C09K2211/1029C09K2211/1044Y02E10/549
Inventor 赵静张旭升刘泉林
Owner UNIV OF SCI & TECH BEIJING
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