Hole transporting materials with twisted aryl groups
US8716484B1 · kind B1 · utility
1Cited by
34References
11Claims
0Family size
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Key dates
| Filing date | Dec 5, 2012 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Dec 5, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/549
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel compounds, and in particular, novel molecules having twisted aryl groups are provided. In particular, the compounds include an aryl group at the ortho position relative to an amine nitrogen, thereby causing a twist within the compound from the plane of the aryl group due to the steric effect. As a result, this decreases the tendency of the molecules to pack closely and results in a higher solid state triplet energy due to reduced solid state π-stacking. Additionally, organic light emitting devices (OLEDs) comprising a layer including these novel compounds are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.