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US 9,559,307 B2Granted
Polymer and organic electronic device
AssigneesCambridge Display Technology Limited, Sumitomo Chemical Company, Limited
InventorsAnnette Steudel, Florence Bourcet, Kiran Kamtekar
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Abstract
A composition comprising a polymer and a phosphorescent material wherein the polymer comprises repeat units of formula (I): wherein A is a heteroaryl group containing a nitrogen atom, and A may be unusubstituted or substituted with one or more substituents; R1 in each occurrence is independently a substituent; and n is 0, 1, 2, 3 or 4.
Claims20
A composition comprising a polymer and a phosphorescent material wherein the polymer comprises repeat units of formula (III):
- wherein:
- R1 in each occurrence is independently C1-40hydrocarbyl, —OR11, —SR11, —NR112, or —SiR113;
- R11 each occurrence is C1-40hydrocarbyl;
- R2 is a C1-40hydrocarbyl;
- and
- n is 0, 1, 2, 3 or 4.
3 more elements
A polymer comprising a repeat unit of formula (III):
- wherein:
- R2 is a C1-40hydrocarbyl;
- R1 in each occurrence is independently C1-40hydrocarbyl, —OR11, —SR11, —NR112, or —SiR113;
- R11 each occurrence is C1-40hydrocarbyl;
- and
- n is 0, 1, 2, 3 or 4.
3 more elements
Dependencies are inferred from the claim text.