Methods for producing organic light emitting diode (OLED) materials
US9376428B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | May 9, 2013 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | May 9, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/626
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods of producing OLED materials containing fluorene ring systems in which two alkyl substituents at the 9-position of fluorene ring are alkyl substituted through key intermediates generically represented by the formula: where X represents a substituent that increases the acidity of the hydrogen atoms on the adjoining methylene group (which is immediately adjacent the fluorene ring systems 9 -position).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.