Blue electroluminescent materials for polymer light-emitting diodes
AssigneeAgency for Science, Technology and Research
InventorsWei Huang, Wang Lin Yu, Jian Pei, Soo Jin Chua
Life of this patent
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Abstract
A polymeric material comprising alternate substituted fluorene and phenylene units, as represented by the following formula wherein R1, R2, R3 and R4, which may be identical or different, are each selected from the group consisting of H, a (C1-C22) linear or branched alkyl, alkoxy or oligo (oxyetylene) group, a (C6-C30) cycloalkyl group, and an unsubstituted or substituted aryl group, and n is from about 3 to about 5000.
Claims18
A polymeric material comprising alternate substituted fluorene and phenylene units, as represented by the following formula
- wherein R1 and R2 which may be identical or different, are each H, a (C1-C22) linear or branched alkyl, alkoxy or oligo (oxyethylene) group, a (C6-C30) cycloalkyl group, or an unsubstituted or substituted aryl group;
- wherein R3 and R4, which may be identical or different, are each a linear or branched octoxyl group;
- and wherein n is from about 3 to about 5000.
A polymeric material comprising Poly[(9,9-dihexyl-2,7-fluorene)-alt-co-(2,5-dioctoxyl-1,4-phenylene)].
Dependencies are inferred from the claim text.