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US 8,308,978 B2Granted
Polymer matrix electroluminescent materials and devices
AssigneeSumitomo Chemical Company, Limited
InventorsMatthew L. Marrocco, III, Farshad J. Motamedi
Life of this patent
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Abstract
Photoluminescent and electroluminescent compositions are provided which comprise a matrix comprising aromatic repeat units and a luminescent metal ion or luminescent metal ion complex. Methods for producing such compositions, and the electroluminescent devices formed therefrom, are disclosed.
Claims69
A composition comprising a polymer comprising repeat units selected from the group consisting of:
- where R is independently selected from H, D, F, alkoxy, aryloxy, alkyl, aryl, alkyl ketone, aryl ketone, alkylester, arylester, amide, carboxylic acid, fluoroalkyl, fluoroaryl, polyalkyleneoxy, any two of the R groups may be bridging, A and B are independently selected from the group consisting of —O—, —S—, —NR1—, and —CR1R2—, —CR1R2CR3R4—, —N═CR1—, —CR1═CR2—, —N═N—, and —(CO)—, where R1-R4 are H, D, F, alkyl, aryl, alkyleneoxy, polyalkyleneoxy, alkoxy, aryloxy, fluoroalkyl, and fluoroaryl, two of the R1-R4 groups may be bridging within the repeat unit, m is 0-2, n is 0-3, o is 0-4, p is 0-5, q is 0-6, and E is selected from the group consisting of O, NH, and S;
- and one or more luminescent metal ions or luminescent metal ion complexes, wherein the excited state of the polymer is at a higher energy level than the excited state of the luminescent metal ions or luminescent metal ion complexes.
A composition comprising a polymer of the structure:
- R-polarizable ligand-RY and one or more luminescent metal ions or metal ion complexes, wherein Y is a polymer repeat unit, R-polarizable ligand-R is a polarizable ligand linked through backbone R groups to form part of the backbone of the polymer, and each backbone R group is independently selected from alkoxy, aryloxy, alkyl, aryl, alkyl ketone, aryl ketone, alkylester, arylester, amide, carboxylic acid, fluoroalkyl, fluoroaryl, polyalkyleneoxy, any two of the backbone R groups may be bridging, wherein the polymer repeat unit Y is selected from the group consisting of:
- where each R group of the Y repeat unit(s) is independently selected from H, D, F, Cl, Br, I, alkoxy, aryloxy, alkyl, aryl, alkyl ketone, aryl ketone, alkylester, arylester, amide, carboxylic acid, fluoroalkyl, fluoroaryl, polyalkyleneoxy, any two of the Y repeat unit R groups may be bridging, m is 0-2, n is 0-3, o is 0-4, p is 0-5, and q is 0-6, A and B are independently selected from the group consisting of —O—, —S—, —NR1—, and —CR1R2—, —CR1R2—CR3R4—, —N═CR1—, —CR1═CR2—, —N═N—, and —(CO)— where R1-R4 are H, D, F, Cl, Br, I, alkoxy, aryloxy, alkyl, aryl, alkyleneoxy, polyalkyleneoxy, aryloxy, fluoroalkyl, and fluoroaryl, two of the R1-R4 groups may be bridging within the repeat unit, and E is selected from the group consisting of O, NH, and S.
Dependencies are inferred from the claim text.