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Polymer electroluminescence material containing amides iridium metal complexes and preparation method thereof

A technology of iridium metal complexes and electroluminescent materials, which is applied in the direction of luminescent materials, electroluminescent light sources, electric light sources, etc., can solve the problems of poor anti-crystallization performance, and achieve low cost, easy synthesis, and strong phosphorescence performance Effect

Inactive Publication Date: 2008-09-17
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material can be made into PLED by spin coating, so as to solve the disadvantages of thermal decomposition and poor anti-crystallization performance of small molecule luminescent materials in the evaporation process, and give full play to the advantages of phosphorescent metal complexes and polymers, and obtain an electroluminescent Materials for Luminescent Device Conditions

Method used

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  • Polymer electroluminescence material containing amides iridium metal complexes and preparation method thereof
  • Polymer electroluminescence material containing amides iridium metal complexes and preparation method thereof
  • Polymer electroluminescence material containing amides iridium metal complexes and preparation method thereof

Examples

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Embodiment 1

[0068] Example 1: The auxiliary ligand is N-phenylmethacrylamide, and the main ligand is a metal iridium complex (ppy) of 2-phenylpyridine 2 Synthesis of Ir(N-phMA), and its homopolymers and copolymers. PPy is the abbreviation of 2-phenylpyridine, which is L 2 N-phMA is an abbreviation for -phenylmethacrylamide. The structural formulas of metal iridium complexes, homopolymers and copolymers are as follows:

[0069]

[0070] (1) Preparation of N-phenylmethacrylamide:

[0071] Take 34.1mL methacrylic acid (0.4mol), 13.7mL PCl 3 (0.15mol) in a reaction flask, keep at 65-70°C for 12 hours, raise the temperature to above 80°C and keep for 1 hour, then cool to about 50°C, the upper layer solution is methacryloyl chloride, and the phosphorous acid is at the bottom layer. Pour off the supernatant and proceed directly to the next reaction.

[0072] Place 41.08 mL (0.45 mol) of aniline and 84.7 mL (0.6 mol) of triethylamine in a reaction flask, stir at room temperature, and slowly...

Embodiment 2

[0081] Example 2: Synthesis of metal iridium complexes with N-(4-methylphenyl)methacrylamide as the auxiliary ligand and 2-phenylpyridine as the main ligand, and their homopolymers and copolymers. Its structural formula is:

[0082]

[0083] (1) Preparation of N-(4-methylphenyl)methacrylamide:

[0084] Place 6.2g of p-methylaniline (0.12mol), 26mL of triethylamine (0.15mol), and 10mL of dichloromethane solution in a reaction flask. Stir at room temperature and slowly drop methacryloyl chloride solution to produce a large amount of white solid. After dropping, the temperature was raised to 50°C and stirring was continued for 3h. After the reaction, the reaction solution was washed with water, dilute acid and water in sequence, and the organic solution was dried. After filtration, the solvent was sucked dry, and the solid was recrystallized from ethanol. White crystals were obtained (yield 73%), m.p = 88°C. IR υ(cm -1 )(KBr): υ N-H (3269); υ C＝O (1655); υ C＝C (1624)υ...

Embodiment 3

[0091] Embodiment 3: the auxiliary ligand is N-phenylmethacrylamide, and the main ligand is the synthesis of metal iridium complexes of 2-phenyl (4-chloro) pyridine, and its structural formula is as follows:

[0092]

[0093] (1) Synthesis of 2-phenyl (4-chloro) pyridine:

[0094] Dissolve 5g of 2,4-dichloropyridine (33.79mmol) in 10mL of tetrahydrofuran, dissolve 6g of phenylboronic acid (49.1mmol) in 20mL of tetrahydrofuran, mix the two solutions with a 250mL round bottom flask under nitrogen, and then add 0.5g of triphenyl Base phosphorus (1.9mmol), 0.1g palladium acetate (0.45mmol) as catalyst, finally add 2mol / L sodium carbonate solution 10mL, reflux under nitrogen for 16h. Cooling, liquid separation, the aqueous phase was extracted 3 times with ethyl acetate, then the ethyl acetate solution was returned to the oil phase, and the resulting solution was washed 3 times with saturated sodium chloride solution. dry. The solvent was distilled off at room temperature at 80...

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Abstract

The invention relates to a polymer electroluminescent material containing an amide iridium metal complex and a preparation method thereof, which belong to the synthetic material and electroluminescent material technology field. The invention discloses the polymer electroluminescent material containing the amide iridium metal complex, the metal complex of the polymer adopts a metal complex containing a 2-phenylpyridine structure, the molecular structural formula is (L<2>)2Ir(MA), wherein the L<2> signifies bidentateligand containing the 2-phenylpyridine, and the MA signifies bidentateligand containing amide structure and double bonds. The synthesized polymer is divided into two types, one is the homopolymer Poly (L<2>)2Ir(MA), of the metal complex, or the other is the homopolymer Poly VK-(L<2>)2Ir(MA) of the metal complex and the N-vinyl carbazole (N-VK). All the polymers containing the iridium metal complex synthesized in the invention have higher luminescence performance in the solution at room temperature, and can be used as the functional material in organic electroluminescent devices.

Description

technical field [0001] The polymer electroluminescent material containing amide-type iridium metal complex and its preparation relate to the electroluminescent material containing the polymer of amide-type Ir(III) metal complex which can be used in the field of electroluminescence. The invention belongs to the technical field of synthetic materials and electroluminescent materials. Background technique [0002] Organic luminescence (electroluminescence, EL) refers to the phenomenon that luminescent materials are excited by current and electric field under the action of an electric field to emit light. It is a luminescent process that directly converts electrical energy into light energy. The research on organic electroluminescent devices (OEL), that is, organic light-emitting diodes (OLEDs), began in the 1950s. By 1987, Eastern Kodak Company Tang et al. adopted an organic small molecule material with high fluorescence efficiency, electron transport properties and vacuum coa...

Claims

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Application Information

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IPC IPC(8): C09K11/06H05B33/14
Inventor 丁玉强李程王微洁符浩林贵昆王权
Owner JIANGNAN UNIV
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