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Fused ring compound, as well as preparation method and application thereof

A compound and fused ring technology, applied in the field of fused ring compounds and their preparation, can solve the problems of low glass transition temperature, poor thermal stability, inability to combine thermal stability and high triplet energy level, etc., to reduce the barrier value , effective transmission improvement, and mild reaction conditions

Active Publication Date: 2019-06-25
NINGBO LUMILAN NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of low glass transition temperature, amorphous film-forming property and poor thermal stability in the hole transport materials in the prior art, which cannot have both good thermal stability and high triplet energy level.

Method used

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  • Fused ring compound, as well as preparation method and application thereof
  • Fused ring compound, as well as preparation method and application thereof
  • Fused ring compound, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides a condensed ring compound having the structure represented by the following formula C-1:

[0051]

[0052] The synthetic route of the compound represented by formula C-1 is as follows:

[0053]

[0054] The preparation method of the compound represented by formula C-1 specifically includes the following steps:

[0055] (1) Preparation of intermediate (D)

[0056] Under the protection of nitrogen, into a 500ml four-necked flask, 24.3g (100mmol) of the compound represented by formula (A), 24.7g (100mmol) of the compound represented by formula (B), 200ml of toluene, 19.2g( 200mmol) Sodium tert-butoxide, 91mg (0.1mmol) Pd 2 (dba)3, 0.6ml (0.3mmol) tri-tert-butyl phosphine toluene solution (the mass fraction of tri-tert-butyl phosphine in the toluene solution of tri-tert-butyl phosphine is 10%), after refluxing for 2 hours, add water to quench the reaction , The water phase was separated, most of the solvent was removed by rotary evaporation, the solid was ...

Embodiment 2

[0063] This embodiment provides a condensed ring compound having the structure represented by the following formula C-2:

[0064]

[0065] The difference between the preparation steps of the compound represented by formula C-2 and the preparation steps of the compound represented by C-1 provided in Example 1 is only:

[0066] The compound represented by formula F-2 was substituted for compound F-1 in step (3) of Example 1, and the yield was 85%.

[0067]

Embodiment 3

[0069] This embodiment provides a condensed ring compound having the structure represented by the following formula C-3:

[0070]

[0071] The difference between the preparation steps of the compound represented by formula C-3 and the preparation steps of the compound represented by C-1 provided in Example 1 is only:

[0072] The compound represented by formula F-3 was substituted for compound F-1 in step (3) of Example 1, and the yield was 87%.

[0073]

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Abstract

The invention relates to the technical field of display, in particular to a fused ring compound and a preparation method and application thereof. The fused ring compound has a structure shown as a formula (I), has an appropriate HOMO energy level, can reduce barriers required to be overcome when holes are injected into a light-emitting layer from an anode increases effective injection of the holes, and is beneficial to reducing the working voltage of a device and improving the light-emitting efficiency of the device. The invention also provides an organic light-emitting device. At least one functional layer of the OLED contains the fused ring compound. The compound is used as a hole transport material, so that the working voltage of the OLED device can be reduced, and the current efficiency is improved.

Description

Technical field [0001] The invention relates to the field of display technology, in particular to a fused ring compound and a preparation method and application thereof. Background technique [0002] Organic light-emitting diodes (OLEDs) have the advantages of fast response, low energy consumption, self-luminescence, wide color gamut, ultra-thin, foldable and flexible, etc., which are more promising than liquid crystal display technology in the future. The new display technology has attracted more and more attention. [0003] OLED is a carrier double injection light-emitting device. The light-emitting mechanism is: driven by an external electric field, electrons and holes are injected into the organic light-emitting layer from the cathode and anode respectively, and recombine in the organic light-emitting layer to generate excitons and excitons The radiation transitions back to the ground state and emits light. As early as the 1960s, Pope et al. first reported the electroluminesc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/16H01L51/50H01L51/54
Inventor 张玉祥龚明明
Owner NINGBO LUMILAN NEW MATERIAL CO LTD
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