CPC C09K 11/06 (2013.01) [C08G 61/02 (2013.01); C08G 61/12 (2013.01); H10K 85/111 (2023.02); H10K 85/151 (2023.02); H10K 85/342 (2023.02); H10K 85/361 (2023.02); C08G 61/122 (2013.01); C08G 2261/11 (2013.01); C08G 2261/122 (2013.01); C08G 2261/1412 (2013.01); C08G 2261/312 (2013.01); C08G 2261/3142 (2013.01); C08G 2261/3422 (2013.01); C08G 2261/374 (2013.01); C08G 2261/411 (2013.01); C08G 2261/5242 (2013.01); C08G 2261/95 (2013.01); H10K 50/11 (2023.02); H10K 85/30 (2023.02); H10K 85/623 (2023.02); H10K 2101/00 (2023.02); H10K 2101/10 (2023.02); H10K 2102/103 (2023.02)] | 17 Claims |
1. A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer; wherein the polymer has an anisotropy factor α of no more than 0.8, wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone, wherein the light-emitting repeat unit is a phosphorescent repeat unit comprising a phosphorescent metal complex, wherein the polymer comprises one or more co-repeat units of formula (VI):
wherein Ar is an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, and angle θ is 180°±40°; and
wherein the phosphorescent repeat units are separated from one another in the backbone by the one or more co-repeat units.
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