Polyfluorenes as materials for photoluminescence and electroluminescence
US5900327A · kind A · utility
109Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Nov 5, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fluorenes and polyfluorenes having one or two polar-group-containing alkyl substituents on their "9" carbon methylenes are disclosed together with the polymers' use as luminescent materials in organic light-emitting diodes and light-emitting electrochemical cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.