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Phenolic group-pyridine metal complexes and their application as electroluminescent materials

A multi-nuclear complex, phenol-based technology, applied in the field of organic electroluminescent materials, to achieve the effect of high brightness, low turn-on voltage and good film-forming properties

Inactive Publication Date: 2004-11-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The phenomenon of organic electroluminescence has been discovered for more than 30 years. Before 1987, due to the huge defect of organic electroluminescent devices (turn-on voltage > 200V), its application was limited.

Method used

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  • Phenolic group-pyridine metal complexes and their application as electroluminescent materials
  • Phenolic group-pyridine metal complexes and their application as electroluminescent materials
  • Phenolic group-pyridine metal complexes and their application as electroluminescent materials

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Embodiment 1

[0033] Embodiment 1: The present invention has adopted the following 30 kinds of ligands to prepare complex luminescent materials:

[0034]

[0035]

[0036]

[0037]

Embodiment 2

[0038] Embodiment 2: (L 1 ) 3 Al 2 Synthesis

[0039] Dissolve 2.0 g (7.6 mmol) of ligand in 30 ml of methanol, add Al 2 (SO 4 ) 3 0.86 g (2.5 mmol), 0.60 g (15.0 mmol) of NaOH, and stirred at room temperature for 5 hours. After the reaction, it was allowed to stand still, filtered to obtain a white solid, washed three times with methanol (3×30ml), washed three times with ether (3×30ml), and dried in the air. After sublimation and purification, 1.28 g of the product was obtained, with a yield of 61.3%. Mass spectrum showed molecular ion peak: 837. Elemental analysis, according to molecular formula C 51 h 33 N 3 o 6 Al 2 Calculated: C: 73.1%, H: 4.0%, N: 5.0%; Experimental: C: 73.4%, H: 4.1%, N: 4.9%.

Embodiment 3

[0040] Embodiment 3: (L 2 ) 3 Al 2 Synthesis

[0041] Dissolve 2.2 g (7.6 mmol) of the ligand in 30 ml of methanol, add Al 2 (SO 4 ) 3 0.86 g (2.5 mmol), 0.60 g (15.0 mmol) of NaOH, and stirred at room temperature for 5 hours. After the reaction, it was allowed to stand still, filtered to obtain a white solid, washed three times with methanol (3×30ml), washed three times with ether (3×30ml), and dried in the air. After sublimation and purification, 1.43 g of the product was obtained, with a yield of 62.0%. Mass spectrum showed molecular ion peak: 922. Elemental analysis, according to molecular formula C 57 h 45 N 3 o 6 Al 2 Calculated: C: 74.3%, H: 4.9%, N: 4.6%; Experimental: C: 74.2%, H: 4.8%, N: 4.8%.

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Abstract

The invention provides a series of multi-nuclear metal complexes whose structure is illustrated by formula (I) disclosed in the specification, wherein M is bivalent or trivalent metallic atom, x=2-4, n=0-6, m=0-12. These materials can be applied to the preparation of high-performance organic electroluminescent devices. the organic electroluminescent device comprises a glass substrate, a positive electrode, a negative electrode formed by active metals e.g. Al, Mg:Ag alloy, and the carrier injection layer between the positive electrode and the negative electrode including a cavity injection layer and an electron injection layer, a carrier transmission layer and a luminescent layer.

Description

technical field [0001] The invention relates to an organic electroluminescent material and its application, in particular to a complex formed by phenolic pyridine or its derivatives and metal ions and its preparation to obtain blue, green, red or white electroluminescence device applications. Background technique [0002] The phenomenon of organic electroluminescence has been discovered for more than 30 years. Before 1987, its application was limited due to the huge defect of organic electroluminescent devices (turn-on voltage>200V). In the past ten years, due to continuous breakthroughs in materials and device technology, organic electroluminescence has reached or is close to the practical stage. [0003] In 1965, Gurnee et al first published a patent on organic electroluminescent devices (U.S. Pat. No. 3,172,862; 3,173,050). In 1973, Dresner also published a patent on organic electroluminescent devices (U.S. Pat. No. 3,170,167). In these inventions polyaromatic organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06
Inventor 王悦刘宇吴英叶开其
Owner JILIN UNIV
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