Hole-transporting material and use thereof
US5681664A · kind A · utility
24Cited by
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8Claims
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Key dates
| Filing date | Aug 2, 1995 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Aug 2, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Hole-transporting materials of the following formula (1) have excellent hole-transporting capability and excellent durability, EQU H--A----B--A--!.sub.n --B--A--H (1) PA1 wherein A is an aromatic amine derivative residue of the following formula (2), B is a residue of the following formula (3), and n is an integer of 1 to 5,000, PA0 Formula (2): ##STR1## Formula (3): ##STR2## and the above hole-transporting materials therefore give an organic EL device and an electrophotographic photoreceptor which are excellent in stability in the continuous operation for a long period time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.