Spiro structure-containing compound and application thereof
By using compounds with helical structures as electron transport materials for OLED devices, the problems of insufficient electron mobility and thermal stability have been solved, achieving high efficiency, low voltage, and long lifespan of the devices.
CN122079913APending Publication Date: 2026-05-26SHANGHAI PHICHEM MATERIAL CO LTD +1
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Patent Information
- Application Number
- CN202610346149.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-19
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
The electron mobility and thermal stability of electron transport materials in existing OLED devices are insufficient, affecting the device's voltage, efficiency, and cycle life.
Method used
Compounds containing spiro compounds are used as electron transport materials. These compounds are formed by combining nitrogen-containing six-membered heterocycles such as pyridine, pyrimidine, or triazine with spirofluorene derivatives and aryl groups. This improves the heat resistance of the compounds and modulates the HOMO and LUMO energy levels, thereby enhancing electron mobility.
Benefits of technology
It improves the thermal stability and electron mobility of OLED devices, reduces the operating voltage, extends the device lifespan, and enhances luminous efficiency.
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Abstract
The invention discloses a spiro structure-containing compound and application thereof, and belongs to the technical field of display. The chemical structural formula of the compound is shown in the specification, wherein Ar1 to Ar4 are each independently one of a substituted or unsubstituted C6-C60 arylene group, a substituted or unsubstituted C3-C30 heteroarylene group, a substituted or unsubstituted heteroarylene group, a substituted or unsubstituted heteroarylene group, a substituted or unsubstituted heteroarylene group, a substituted or unsubstituted heteroarylene group, a substituted or unsubstituted Ar5, Ar6 and R are respectively and independently one of a substituted or unsubstituted C6-C60 aryl group and a substituted or unsubstituted C3-C30 heteroaryl group; at least one of Z1 to Z3 is N, and the balance is CH; l is one of the following groups:; r1 to R10 are respectively and independently one of hydrogen, halogen, a cyano group, a nitro group, an alkyl group of C1-C8, an alkoxy group of C1-C12, a substituted or unsubstituted aryl group of C6-C30, and a substituted or unsubstituted heteroaryl group of C3-C30. The compound has excellent electron transmission performance, and is beneficial to improving the voltage, efficiency and service life of a device.
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