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Organic electroluminescent devices and metal complex compounds

An electroluminescence device and metal complex technology, which can be applied in electroluminescence light sources, organic chemistry, electric light sources, etc., and can solve the problems of not being able to achieve persistence and luminescence characteristics at the same time.

Active Publication Date: 2006-05-24
UDC IRELAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these complexes cannot simultaneously achieve compatibility of long-lasting and luminescent properties such as color purity.

Method used

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  • Organic electroluminescent devices and metal complex compounds
  • Organic electroluminescent devices and metal complex compounds
  • Organic electroluminescent devices and metal complex compounds

Examples

Experimental program
Comparison scheme
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Embodiment

[0491] The present invention will now be explained in more detail with reference to the following examples, but it should be understood that the specific scheme for implementing the present invention does not constitute a limitation of the present invention.

[0492] Synthesis of compound (1)

[0493] To 6,6'-bis(2-hydroxyphenyl)-2,2'-bipyridine (0.1g) and PtCl 2 Benzonitrile (10 ml) was added to (0.16 g), followed by heating to reflux for 3 hours under a nitrogen atmosphere. After cooling the reaction solution to room temperature, methanol was added to the reaction solution to form a precipitate, which was suction filtered. The obtained solid was purified by silica gel chromatography (chloroform as a developer) to obtain 0.06 g of compound (1). The structure of compound (1) was identified by mass spectrometry. Under nitrogen atmosphere, UV irradiates the chloroform solution containing compound (1) to obtain red-orange emission light (λ max = 624nm).

[0494]

[0495] ...

Embodiment 1

[0514]The cleaned ITO substrate is placed in a vacuum evaporator, and evaporated TPD (N, N-diphenyl-N, N-two (m-tolyl) benzidine) forms a film with a thickness of 50 nm on the substrate, Compound (1) according to the present invention and compound A (weight ratio 1:17) were then co-evaporated to form a film having a thickness of 36 nm, followed by evaporation of compound B to form a film having a thickness of 36 nm. Next, a pattern mask (adjusting each emission region to 4 mm × 5 mm) was set on the organic thin layer obtained above, and lithium fluoride was further evaporated in a vacuum evaporator, thereby forming a film having a thickness of 3 nm thereon. ; Then deposit a 400nm thick aluminum film.

[0515] The EL device thus produced was made to emit light by means of a source-measurement device (Model 2400 (trade name)) manufactured by Toyo Technica Co., Ltd. by applying a DC constant voltage thereto; and using a photometer manufactured by Topcon Co. BM-8 (trade name) mea...

Embodiment 2

[0517] Place the cleaned ITO substrate in a vacuum evaporator, and evaporate TPD (N, N-diphenyl-N, N-two (m-tolyl) benzidine) successively to form a film with a thickness of 50 nm on the substrate. , and then co-evaporated compound (1) according to the present invention and compound A (weight ratio 1:2) to form a film with a thickness of 36 nm, followed by evaporation of compound B to form a film with a thickness of 36 nm. Next, a pattern mask (adjusting each emission region to 4 mm × 5 mm) was set on the organic thin layer obtained above, and lithium fluoride was further evaporated in a vacuum evaporator, thereby forming a film having a thickness of 3 nm thereon. ; Then deposit a 400nm thick aluminum film.

[0518] The EL device thus produced was made to emit light by means of a source-measurement device (Model 2400 (trade name)) manufactured by Toyo Technica Co., Ltd. by applying a DC constant voltage thereto; and using a photometer manufactured by Topcon Co. BM-8 (trade na...

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Abstract

The present invention relates to an organic electroluminescent device having a pair of electrodes and at least one organic layer between said pair of electrodes comprising a light-emitting layer, wherein at least one layer between said pair of electrodes comprises at least one Metal complexes with tridentate ligands or higher multidentate ligands.

Description

technical field [0001] The present invention relates to organic electroluminescent devices (light emitting devices or EL devices) that convert electrical energy into light. The invention also relates to metal complexes suitable for use in said organic electroluminescent devices. Background technique [0002] Recently, various types of display devices have been actively researched and developed. Among them, more attention has been focused on organic electroluminescent (EL) devices. This is because organic EL devices are promising display devices capable of emitting light with high luminance at low voltage. [0003] Recently, application of organic EL devices to color display devices and incandescent light sources has been actively studied. However, the development of high-grade color display devices and incandescent light sources requires enhancement of the characteristics (performance) of devices emitting blue, green and red light. [0004] On the oth...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07D207/20C07D213/53C07D213/74C07D471/04C07F15/00H05B33/14
Inventor 新居一巳渡边康介五十岚达也市嶋靖司伊势俊大
Owner UDC IRELAND
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