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Liquid composition having phosphorescence luminescent material

A technology of phosphorescent light-emitting materials and compositions, applied in the field of organic electroluminescent elements, can solve the problems of insolubility and limited use, and achieve the effects of inhibiting solubility, inhibiting the reduction of current efficiency, and inhibiting the shortening of light-emitting life.

Active Publication Date: 2015-03-18
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, oxalic acid is insoluble in organic solvents such as aromatic hydrocarbons and aromatic ethers, and there are also problems of limited use

Method used

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  • Liquid composition having phosphorescence luminescent material
  • Liquid composition having phosphorescence luminescent material
  • Liquid composition having phosphorescence luminescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0507] Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to the following Example.

Synthetic example 1

[0509] (Synthesis of Polymer Compound 1)

[0510] Add 2,2'-[9,9-bis(3-hexylphenyl)-9H-fluorene-2,7-diyl to a 1L separable flask equipped with stirring blade, baffle, condenser and thermometer ]-bis(4,4,5,5-tetramethyl-[1.3.2]-dioxaborolane) 15.24g, 2,7-bis[N-(4-bromophenyl)-N- (4-methylphenyl)amino]-9,9-dioctylfluorene 15.97g, 2,7-dibromo-9,9-bis(bicyclo[4,2,0]octyl-1,3, 1.33 g of 5-trien-3-yl)fluorene and 495 g of toluene were used to replace the air in the flask with nitrogen. The flask was immersed in an oil bath, and the temperature was raised until the internal temperature reached 90°C. After adding 0.005 g of palladium acetate and 0.03 g of tris(o-methoxyphenyl)phosphine, 20% by weight of tetraethylhydrogen was added dropwise over 1 hour. Ammonium oxide water 73g. After stirring for 5 hours at an oil bath temperature of 100° C., 0.25 g of phenylboronic acid and 0.015 g of dichlorobistriphenylphosphine were added, and the mixture was further stirred at an oil bath temp...

Synthetic example 2

[0512] (Synthesis of Polymer Compound 2)

[0513] Add 2,2'-(2,5-dihexyl-1,4-phenylene)-bis(4,4,5 , 5-tetramethyl-[1.3.2]-dioxaborolane) 16.44g, 9,9'-bis(4-hexylphenyl)-2,7-dibromo-9H-fluorene 17.01g, 4.19 g of 2,4-bis(4-bromophenyl)-6-(4-n-dodecylphenyl)-1,3,5-triazine and 446 g of toluene, and replace the air in the flask with nitrogen . The flask was immersed in an oil bath, and the temperature was raised to an internal temperature of 90°C. After adding 0.007 g of palladium acetate and 0.05 g of tris(o-methoxyphenyl)phosphine, 20% by weight of tetraethylhydrogen was added dropwise over 1 hour. Ammonium oxide water 117g. After making the temperature of the oil bath 100° C. and stirring for 5 hours, 0.40 g of phenylboronic acid, 0.023 g of dichlorobistriphenylphosphine and 117 g of 20% by weight of tetraethylammonium hydroxide water were added, and the temperature of the oil bath was further reduced to Stir at 100°C for 15 hours. After cooling the reaction solution to roo...

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Abstract

The inveiton is to provide a liquid composition which is excellent in stability, contains a phosphorescence luminescent material and is used in organic electroluminescence elements. The liquid composition is composed of a solvenet which contains the phosphorescence luminescent material and is in liquid state at 25 DEG and under one atomospheric pressure, and more than one additives (A) selected from a group composed of free radical chain terminators and peroxide disintegrants.

Description

technical field [0001] The present invention relates to a liquid composition containing a phosphorescent material, an organic electroluminescence element produced using the liquid composition, and a production method thereof. Background technique [0002] In recent years, the development of color displays and lighting using organic electroluminescence elements (hereinafter also referred to as "organic EL elements") has been active. From the viewpoint of suppressing power consumption and the like, higher-efficiency organic electroluminescent devices are required, and development of organic electroluminescent devices using phosphorescent materials has been active. [0003] The film-forming method of the organic light-emitting layer included in the organic electroluminescent element includes dry methods such as vapor deposition and wet methods such as coating. From the viewpoint of productivity, wet methods attract more attention. [0004] When producing an organic light-emitt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06H01L51/54H01L51/56
CPCH05B33/14C09K11/06C07D307/78C07D471/04H10K50/00
Inventor 小松圣史柿本秀信齐藤宽幸吉田完
Owner SUMITOMO CHEM CO LTD