Organic light-emitting polymerand device
AssigneesCambridge Display Technology Limited, Sumitomo Chemical Company, Limited
InventorsMichael Cass, Matthew Roberts, Florence Bourcet, Andrey Nikolaenko
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Abstract
A polymer comprising a fluorescent light-emitting repeating unit comprising a group of formula ED-EA wherein ED is an electron-donating unit; EA is an electron-accepting unit; and a band gap EgCT of a charge-transfer state formed from the electron-donating unit and the electron-accepting unit is smaller than the bandgap of either the electron-accepting unit EgEA or that of the electron-donating unit EgED.
Claims15
A polymer comprising a fluorescent light-emitting repeating unit comprising a group of formula ED-EA wherein ED is an electron-donating unit;
- EA is an electron-accepting unit;
- and a band gap EgCT of a charge-transfer state formed from the electron-donating unit and the electron-accepting unit is smaller than the bandgap of either the electron-accepting unit EgEA or that of the electron-donating unit EgED.
Dependencies are inferred from the claim text.