Hole organic electroluminescent compound as well as preparation method and application thereof

A compound and luminescence technology, which is applied in the preparation of organic compounds, amino compounds, organic chemistry, etc., can solve the problems of low driving voltage and unsatisfactory life, and achieve life extension, maximum external quantum efficiency improvement, drive The effect of voltage reduction
CN112062749AInactive Publication Date: 2020-12-11JILIN OPTICAL & ELECTRONICS MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JILIN OPTICAL & ELECTRONICS MATERIALS
Publication Date
2020-12-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a hole organic electroluminescent compound as well as a preparation method and application thereof; the compound has the structural formula defined in the specification, wherein m and n are integers from 0 to 1 and are not 0 at the same time; the ring A and the ring B are adamantane and do not exist at the same time; X and Y independently represent a connection bond, -O-,-S-, -C(R3)(R4), -N(R5)-, -Si(R6)(R7)-, and at most one of X and Y is a connection bond; R1 and R2 are the same or different from each other, and are each independently hydrogen, deuterium, halogen, cyano, carboxyl, nitro, hydroxyl, amino, sulfonic acid group, sulfonyl, phosphate group, phosphoryl, silicon group and borane group; L1 and L2 are a link bond, a substituted or unsubstituted C6-C30 aryl group, and a substituted or unsubstituted three-membered-10-membered heteroaryl group; and R3, R4, R5, R6, R7, R8, R9, R10 and R11 are the same as or different from each other and are each independently a substituted or unsubstituted C1-C10 alkyl group. A device prepared from the compound provided by the invention has excellent current efficiency, low driving voltage and long service life.
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Description

technical field

[0001] The invention relates to the technical field of luminescent materials, in particular to a hole-type organic electroluminescent compound and its preparation method and application. Background technique

[0002] The organic electroluminescence element is a self-luminous element utilizing the principle that a fluorescent substance emits light by recombination energy of holes injected from the anode and electrons injected from the cathode by applying an electric field. It has the following structure: an anode, a cathode, and a layer of organic material in between. In order to improve the efficiency and stability of organic electroluminescent elements, the organic material layer usually includes multiple layers with different materials, such as hole injection layer (HIL), hole transport layer (HTL), light emitting layer, electron transport layer (ETL ) and electron injection layer (EIL). In this organic light-emitting element, when a voltage is applied be...

Claims

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