Gold complexes for OLED applications

A compound and metal technology, applied in the field of gold complexes for OLED applications, can solve problems such as weak binding force and affecting long-term stability of OLEDs

Active Publication Date: 2018-03-27
THE UNIVERSITY OF HONG KONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the relatively weak binding force between the gold(III) center and the auxiliary monodentate ligands can affect the long-term stability of these OLEDs

Method used

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  • Gold complexes for OLED applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 601

[0076] Example 601 - Preparation of Intermediate 411

[0077]

[0078] in N 2 At 77 K, n-BuLi (2.7 mL, 6.48 mmol) was added to ligand 301 (1 g, 3.21 mmol) dissolved in 30 mL of anhydrous ether. The reaction mixture was immediately allowed to warm to room temperature and stirred for 2 hours. Dibutyltin dichloride (0.98 g, 3.23 mmol) dissolved in 3 mL of anhydrous diethyl ether was injected into the reaction mixture by syringe. After the addition, the light yellow cloudy solution turned milky white. After stirring overnight at room temperature, H 2 O, and extract the organic layer. Removal of solvent gave a light yellow solid. Subsequent column chromatography with pure hexane gave the pure product as a white solid. Yield: 0.72 g (58.3%). 1 H NMR (400 MHz, CDCl 3 ): δ7.96 (d, 2H, J = 7.82 Hz) , 7.63 (d, 2H, 118 Sn companion (satellite), J = 7.82 Hz, J HPt = 35.0 Hz) , 7.40 (t, 2H, J = 7.62 Hz) , 7.28 (d, 2H, J = 7.06 Hz) , 1.58-1.66 (m, 4H) , 1.31 -1.39 (m, 8H) , 0....

Embodiment 602

[0079] Example 602 - Preparation of Intermediate 412

[0080]

[0081] The procedure was similar to Example 601, except that ligand 302 (1.4 g, 3.31 mmol) was used instead of ligand 301. Yield: 0.70 g (42.6 %). 1 H NMR (400 MHz, CDCl 3 ): δ 7.84 (d, 2H, J = 8.28 Hz) ,7.62 (d, 2H, 118 Sn companion, J = 1.97 Hz, J HPt = 36.1 Hz) , 7.39 (dd, 2H, J = 8.25Hz, J = 2.10 Hz) , 1.64 - 1.69 (m, 4H) , 1.31 - 1.42 (m, 26H) , 0.89 (t, 6H, J = 7.31 Hz ).

Embodiment 603

[0082] Example 603 - Preparation of Intermediate 421

[0083]

[0084] Make HAuCl 4 .3H 2 O (200 mg, 0.508 mmol) was dissolved in 20 mL of MeCN. Intermediate 411 (200 mg, 0.52 mmol) was added. The mixture was heated to 80°C and reacted overnight. The off-white precipitate was filtered and washed thoroughly with MeCN and CHCl 3 washing. Yield: 77 mg (38.7%).

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PUM

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Abstract

Gold (III) emitters showing high emission quantum efficiency and stable in thermal deposition process are described. High performance OLEDs can be fabricated from these emitters.

Description

technical field [0001] The present disclosure relates to a class of gold emitters, their preparation and their use in organic light emitting diodes (OLEDs). Background of the invention [0002] There has been an interest in studying emissive materials for OLED applications, whether to discover suitable dopant materials or to optimize device structures for high quantum efficiency, long device lifetime, or color tuning. Ir(III) and Pt(II) complexes dominate the field of research. They are highly recognized for their excellent luminescence quantum yield and stability. [0003] In order to have these desirable properties, besides the choice of metal ion, the structural design of the ligand plays a decisive role. The general practice is to use multidentate ring metallating ligands. These multidentate ligands usually contain strong-field donor atoms, such as C- or O-, to remove lower non-emissive metal center (MC) excited states. At the same time, the chelating effect conferre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/12C09K11/06H01L51/50C07C49/92
CPCC07F9/5045C07F1/12C07F9/36C09K11/06C09K2211/188C09K2211/1011C09K2211/1007C09K2211/1029H10K85/1135H10K85/371H10K50/11H10K2101/10H10K71/164
Inventor 支志明
Owner THE UNIVERSITY OF HONG KONG
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