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Dimeric crystal of multidentate 8-hydroxyquinoline zinc complex and its preparation method and application

A hydroxyquinoline-based dimerization technology, applied in zinc-organic compounds, chemical instruments and methods, luminescent materials, etc., can solve the limitations of large-scale applications, poor solubility and film-forming properties, and the difficulty of organic electroluminescent device technology. major problems, to achieve broad commercial application prospects, low cost, and avoid the effect of preparation technology and equipment

Active Publication Date: 2019-06-28
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the solubility and film-forming properties of this type of metal complexes are poor, and the process of preparing organic electroluminescent devices is difficult, which limits the large-scale application of this type of complexes as a light-emitting material in the field of light-emitting devices.

Method used

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  • Dimeric crystal of multidentate 8-hydroxyquinoline zinc complex and its preparation method and application
  • Dimeric crystal of multidentate 8-hydroxyquinoline zinc complex and its preparation method and application
  • Dimeric crystal of multidentate 8-hydroxyquinoline zinc complex and its preparation method and application

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Embodiment 1

[0073] Example 1 Preparation of (E)-2-[3,5-dibromo-2-hydroxystyryl]-8-acetoxyquinoline, ligand H 2 Dimeric Crystals of L-Br and 8-Hydroxyquinoline Zinc Complexes

[0074] 1. The preparation method of (E)-2-[3,5-dibromo-2-hydroxystyryl]-8-acetoxyquinoline comprises the following steps:

[0075] (1) Weigh 0.80g (5mmol) 2-methyl-8-hydroxyquinoline, 1.53g (5.5mmol) 3,5-dibromosalicylaldehyde, add to a 100mL round bottom flask, then add 15mL acetic anhydride to fully dissolve;

[0076] (2) Carry out magnetic stirring under the protection of nitrogen, and heat and reflux at 145° C. for 22 hours;

[0077] (3) After heating to reflux, cool to room temperature, add 30mL of ice water below 0°C, and filter when solids are precipitated to obtain solids, wash the solids with deionized water, and dry them in vacuum for 3 hours to obtain 2.22g of light yellow solids The compound is (E)-2-[3,5-dibromo-2-hydroxystyryl]-8-acetoxyquinoline, and its yield is 88%;

[0078] Its reaction equatio...

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Abstract

The invention discloses a polydentate 8-hydroxyquinoline zinc complex dimeric crystal as well as a preparation method and application thereof. Zinc as a metal center is matched with ligand H2LTBR to obtain the crystal with a dimeric structure. The method successfully prepares an infinitely-extended multi-tooth-chain-structure dimeric crystal with a unique rule, the energy of the system is reduced,better luminous intensity is achieved, the heat stability and the solubility are good, and the complex dimeric crystal can be used as a novel soluble luminescent small molecule with good performance,low cost and clear space structure. In addition, the preparation process is simple, a corresponding light-emitting device can be prepared by adopting an evaporation film forming method, the use of complex preparation processes and equipment is avoided, the cost is reduced, large-scale production can be realized, and the polydentate 8-hydroxyquinoline zinc complex dimeric crystal has a wide commercial prospect in the fields of preparation of luminescent materials or light-emitting devices and the like.

Description

technical field [0001] The invention belongs to the technical field of metal complexes. More specifically, it relates to a multidentate 8-hydroxyquinoline zinc complex dimer crystal and its preparation method and application. Background technique [0002] Organic electroluminescent devices (OLEDs) have the advantages of low power consumption, high brightness, fast response, low driving voltage, and full-color display. They have broad application prospects in the fields of flat panel displays and solid light sources, and have attracted domestic and foreign experts Scholars widely concerned. Since C.W.Tang of the United States first reported the use of tris(8-hydroxyquinoline)aluminum (Alq3) to make organic electroluminescent devices in 1987, research in related fields has flourished. In recent years, OLED has been widely used in the field of small and medium-sized displays, and has gradually entered the fields of large-area display and lighting. [0003] The luminescent ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/06C09K11/06
CPCC07F3/06
Inventor 毛元优霍延平籍少敏程树森牛建平闫丽峰
Owner GUANGDONG UNIV OF TECH
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