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Electrophosphorescent discoloration neutral iridium complex and preparation method thereof

An iridium complex, electrophosphorescence technology, applied in organic compounds/hydrides/coordination complex catalysts, color-changing fluorescent materials, compounds containing elements of Group 8/9/10/18 of the periodic table, etc. Problems such as complex chemical reactions, to achieve the effect of simple and easy operation

Active Publication Date: 2016-02-03
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the photophysical properties of phosphorescent iridium complexes can be adjusted by changing the ligand structure. However, the current photophysical properties of phosphorescent metal complexes are mainly based on changing the metal center, chemical modification of ligands, or synthesis of new ligands. body framework, and these methods often require complex chemical reactions

Method used

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  • Electrophosphorescent discoloration neutral iridium complex and preparation method thereof
  • Electrophosphorescent discoloration neutral iridium complex and preparation method thereof
  • Electrophosphorescent discoloration neutral iridium complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the preparation of complex 1

[0031]

[0032] Weigh 176.5mg (0.5mmol) of IrCl 3 ·3H 2 O and 194.2 mg (1.0 mmol) of 2-phenylbenzimidazole were added to a double-necked flask, vacuumed in the double-row tube-filled with nitrogen-vacuumized, and circulated three times in this way, and then under nitrogen protection, use a syringe After injecting 6mL of 2-ethoxyethanol and 2mL of water (3:1, v / v) respectively, the reaction mixture was heated to 110°C, and after stirring for 17-28 hours, the reaction mixture was cooled to room temperature and poured into the reaction solution After adding a large amount of water, the precipitate was filtered. The product was dried to give the iridium dichloro bridge compound as a yellow solid. Weigh the iridium dichloro bridge compound of 245.3mg (0.2mmol) and the potassium carbonate of 55.2mg (0.4mmol) and join in the double-necked flask, install the condenser tube, seal, vacuumize-fill nitrogen three times, weigh 40.6 ...

Embodiment 2

[0037] Embodiment 2: the preparation of complex 2

[0038]

[0039] Weigh 176.5mg (0.5mmol) of IrCl 3 ·3H 2 The 2-(4-trifluoromethylphenyl) benzimidazole of 0 and 262.3mg (1.0mmol) is added in the double-necked flask, vacuumizes-inflates nitrogen-vacuumizes in the double row tube, circulates like this three times, Then under the protection of nitrogen, after injecting 6mL of 2-ethoxyethanol and 2mL of water (3:1, v / v) respectively with a syringe, the reaction mixture was heated to 110 ° C, and after stirring for 17-28 hours, the reaction The mixture was cooled to room temperature, a large amount of water was added to the reaction liquid, and a precipitate was obtained by filtration. The product was dried to give the iridium dichloro bridge compound as a yellow solid. Weigh 300.4mg (0.2mmol) of iridium dichloride bridge compound and 55.2mg (0.4mmol) of potassium carbonate and join in the double-necked flask, install a condenser tube, seal, vacuum-fill nitrogen three times...

Embodiment 3

[0044] Embodiment 3: the preparation of complex 3:

[0045]

[0046] Weigh 176.5mg (0.5mmol) of IrCl 3 ·3H 2 O and 200.1mg (1.0mmol) of 2-(2-thienyl)benzimidazole were added to the double-necked flask, vacuumed in the double-row tube-filled with nitrogen-vacuumized, and circulated three times in this way, and then protected under nitrogen After injecting 6mL of 2-ethoxyethanol and 2mL of water (3:1, v / v) with a syringe, the reaction mixture was heated to 110°C, and after stirring for 17-28 hours, the reaction mixture was cooled to room temperature , After adding a large amount of water to the reaction liquid, the precipitate was obtained by filtration. The product was dried to give the iridium dichloro bridge compound as a yellow solid. Weigh the iridium dichloro bridge compound of 250.7mg (0.2mmol) and the potassium carbonate of 55.2mg (0.4mmol) and join in the double-necked flask, install the condenser tube, seal, vacuumize-fill nitrogen three times, weigh 40.6 Pour 1...

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Abstract

The invention relates to an electrophosphorescent discoloration neutral iridium complex and a preparation method thereof. O-phenylenediamine, aromatic formaldehyde, iridium trichloride, acetylacetone and the like are used as raw materials, and finally a neutral iridium complex containing reactive hydrogen is synthesized through a series of organic synthesis reactions. Researches find that the phosphorescence property of the complex does not depend on an electric field; however, the complex can present the electrophosphorescent discoloration phenomenon after tetrabutylammonium salt is added. The structural formula of the electrophosphorescent discoloration neutral iridium complex is shown as follows, wherein Ar1 and Ar2 are the same or different aromatic nucleuses.

Description

technical field [0001] The invention relates to the field of organic optoelectronics, in particular to a neutral iridium complex containing active hydrogen and its preparation. technical background [0002] Phosphorescent transition metal complexes are mainly d 6 , d 8 and d 10 Group metal ions, such as iridium, platinum, osmium, gold, etc. Phosphorescent metal complexes have excellent photophysical properties such as high luminous efficiency, large Stokes shift, and easy adjustment of luminous color. In particular, phosphorescent iridium complexes have aroused extensive research interest due to their good luminescent properties, and have been widely used in organic light-emitting diodes, luminescent electrochemical cells, phosphorescent sensing, biomarkers, and imaging. This is because phosphorescent iridium complexes not only have excellent photophysical properties, such as high phosphorescent quantum efficiency and long emission lifetime, but also an important reason ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C07D235/18C07D409/04C09K9/02B01J31/22
Inventor 赵强黄维蒋瑞谭奇许文娟刘淑娟林文鹏
Owner NANJING UNIV OF POSTS & TELECOMM
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