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Metal organic framework material with single-component white light characteristic

A metal-organic framework, one-component technology, used in luminescent materials, climate sustainability, thermometers with physical/chemical changes, etc., can solve problems such as white light self-absorption, complex intrinsic color balance devices, etc. Large, stable luminescence performance, high yield effect

Active Publication Date: 2021-10-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, multi-component mixing to produce white light has problems such as self-absorption, intrinsic color balance, and device complexity. Therefore, single-component intrinsic white light materials are the main goal of realizing WLEDs.

Method used

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  • Metal organic framework material with single-component white light characteristic
  • Metal organic framework material with single-component white light characteristic
  • Metal organic framework material with single-component white light characteristic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] 1.5mmol PbCl 2 and 3.0mmol 2,5-furandicarboxylic acid powder were mixed in 8mL N,N-dimethylacetamide (DMAC) and acetonitrile mixed solvent (V DMAC :V 乙腈 =3:1), mixed and stirred for 30 minutes, placed in a hydrothermal kettle at 150°C in an oven for 3 days, and then slowly cooled to room temperature within 2 days to obtain flaky crystals, which were separated by suction filtration, and successively used After washing with DMAC and ethanol, and vacuum drying at 60° C. for 12 hours, 0.6038 g of the target crystal was obtained with a yield of 78.12% (calculated based on Pb).

[0024] characterize

[0025] 1. Crystal structure characterization:

[0026] Metal-organic framework materials were characterized by single crystal X-ray diffractometer (SCXRD). The detailed information is as follows: the instrument is Bruker SMART APEX II single crystal X-ray diffractometer of Brucker Company. X-ray source is Mo target, radiation wavelength Graphite monochromator. Diffractio...

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Abstract

The invention discloses a cage type metal organic framework (MOFs) material with high radiation and solvent stability single-component white light characteristics and high absolute photoluminescence quantum efficiency, and belongs to the field of material preparation. The molecular formula of the metal organic framework material is {[Pb (s-2FDC) (H2O) 2]} n, and the metal organic framework material is prepared by taking lead chloride and 2, 5-furandicarboxylic acid as reaction raw materials and adopting a simple solvothermal synthesis method. The preparation cost is low, the operation method is simple, the obtained material shows intrinsic broadband white light emission at room temperature under the irradiation of ultraviolet light, the emitted white light is high in intensity and stable in luminescence property, the fluorescence intensity of the material is in certain correlation with the temperature, and the material can be used as a novel luminescent material for preparing a white light emitting diode.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a metal-organic framework-based high-stability single-component white light broadband emission luminescent material and a preparation method and application thereof. Background technique [0002] White light-emitting diodes (WLEDs for short) are particularly important in solid-state lighting technology and have attracted widespread attention for their potential to significantly reduce energy consumption and reduce greenhouse gas emissions. At present, commercial white light-emitting diodes usually use yellow-emitting YAG:Ce phosphors coated on InGaN blue LED lamps to produce mixed white light, or near-ultraviolet LED lamps mixed with red, green, and blue primary color phosphors to produce mixed white light. However, there are problems such as self-absorption, intrinsic color balance, and device complexity in multi-component mixing to produce white light. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06G01K11/00H01L33/50
CPCC08G83/008C09K11/06H01L33/502G01K11/006C09K2211/188Y02B20/00
Inventor 李浩宏林翔玲陈之荣
Owner FUZHOU UNIV
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