Dibenzofurans and dibenzothiophenes
US10217946B2 · kind B2 · utility
2Cited by
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28Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 13, 2015 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Jun 11, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to compounds of formula (I) which are characterized in that they are substituted by at least one nitrile substituted carbazolyl group and their use in electronic devices, especially electroluminescent devices. When used as electron transport material, hole blocking material and/or host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.