Polymer matrix electroluminescent materials and devices
AssigneeSumitomo Chemical Company, Limited
InventorsMatthew L. Marrocco, III, Farshad J. Motamedi, Feras Bashir Abdelrazzaq
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Abstract
Photoluminescent and electroluminescent compositions are provided which comprise a matrix comprising aromatic repeat units covalently coordinated to a phosphorescent or luminescent metal ion or metal ion complexes. Methods for producing such compositions, and the electroluminescent devices formed therefrom, are also disclosed.
Claims128
A light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the excited state of the polymer is at a higher energy level than the excited state of the metal ion or metal ion complex such that upon excitation of the composition, the metal ion or metal ion complex removes excited state energy from the covalently coordinated polymer, and further wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the at least one polymer is selected from the group of conjugated, partially conjugated, and a mixture thereof.
A light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the excited state of the polymer is at a higher energy level than the excited state of the metal ion or metal ion complex such that upon excitation of the composition, the metal ion or metal ion complex removes excited state energy from the covalently coordinated polymer, and further wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the composition comprises a mixture of the at least one polymer and at least one at least partially conjugated charge carrying polymer that is at least one of a hole and electron transport material, wherein the at least one polymer is selected from the group of hyperbranched and dendrimeric and is at least partially conjugated.
A light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the excited state of the polymer is at a higher energy level than the excited state of the metal ion or metal ion complex such that upon excitation of the composition, the metal ion or metal ion complex removes excited state energy from the covalently coordinated polymer, and further wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the polymer comprises repeat units selected from the group consisting of:
- where R is independently selected from the group consisting of H, D, F, alkoxy, aryloxy, alkyl, aryl, alkyl ketone, aryl ketone, alkylester, arylester, amide, carboxylic acid, fluoroalkyl, fluoroaryl, polyalkylene oxy, Cl, Br, I, CN, NO2, OH, and SH;
- m is 0-2;
- n is 0-3;
- o is 0-4;
- p is 0-5;
- q is 0-6;
- A and B are independently selected from the group consisting of —O—, —S—,—NR8—, and —CR1R2—, —CR1R2CR3R4—, —N═CR1—, —CR1═CR2—, —N═N—, and —(CO)—, where R1-R4 are selected from the group consisting of H, D, F, alkyl, aryl, alkyleneoxy, polyalkyleneoxy, alkoxy, aryloxy, fluoroalkyl, and fluoroaryl;
- R8 is selected from the group consisting of H, D, alkyl, aryl, heteroaryl, fluoroalkyl, fluoroaryl, ketone, arylketone, arylester, alkylester, and carboxylic acid;
- E is selected from the group consisting of O, NH, and S;
- where any of the R groups may be polymeric and selected from the group consisting of linear, branched, hyperbranched, and dendrimeric;
- and where any two adjacent R groups taken together may be bridging within the repeat unit.
A light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the polymer has a conjugation length that is controlled with at least one non-aromatic spacer group.
A light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the polymer contains at least one spacer group selected from the group consisting of —O—, —S—, —NR8—, —CR1R2—, —(CH2)n—, —(CF2)n—, -ester-, -amide-, and —Si—;
- where R1-R2 are selected from the group consisting of H, D, F, alkyl, aryl, alkyleneoxy, polyalkyleneoxy, alkoxy, aryloxy, fluoroalkyl, and fluoroaryl;
- n is 0-3;
- R8 is selected from the group consisting of H, D, alkyl, aryl, heteroaryl, fluoroalkyl, fluoroaryl, ketone, arylketone, arylester, alkylester, and carboxylic acid;
- where any of the R groups may be polymeric and selected from the group consisting of linear, branched, hyperbranched, and dendrimeric;
- and where any two adjacent R groups taken together may be bridging.
A light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the excited state of the polymer is at a higher energy level than the excited state of the metal ion or metal ion complex such that upon excitation of the composition, the metal ion or metal ion complex removes excited state energy from the covalently coordinated polymer, and further wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the polymer is a mixture of more than one phosphorescent polymer.
A light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the excited state of the polymer is at a higher energy level than the excited state of the metal ion or metal ion complex such that upon excitation of the composition, the metal ion or metal ion complex removes excited state energy from the covalently coordinated polymer, and further wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the polymer is a mixture of at least one phosphorescent polymer and at least one fluorescent polymer.
An electroluminescent device comprising:
- a first electrode and a second electrode;
- and
- a polymer mixture disposed therebetween comprising
- an electroluminescent layer comprising a light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the composition emits light primarily from a triplet state, or a state of higher multiplicity;
- and
- at least one charge transport material.
An electroluminescent device comprising a light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the luminescent metal ion or metal ion complex is present as part of an inorganic solid.
An electroluminescent device comprising a light emitting composition comprising at least one polymer covalently coordinated to a luminescent or phosphorescent metal ion or metal ion complex, wherein the composition emits light primarily from a triplet state, or a state of higher multiplicity, wherein the device has a turn-on voltage of less than 15V.
A light emitting composition comprising a polymer mixture of at least one non-conjugated polymer covalently coordinated to at least one luminescent or phosphorescent metal ion or metal ion complex;
- and one or more at least partially conjugated charge carrying polymer that is at least one of a hole and electron transport material, wherein the excited state of at least the non-conjugated polymer is at a higher energy level than the excited state of the metal ion or metal ion complex such that upon excitation of the composition, the metal ion or metal ion complex removes excited state energy from the covalently coordinated polymer, and further wherein the metal ion or metal ion complex of the composition emits light primarily from a triplet state, or a state of higher multiplicity.
Dependencies are inferred from the claim text.