# US 8,147,986 B2 · Organic electroluminescent device

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- Number: US 8,147,986 B2
- Document ID: US8147986B2
- Status: Granted
- Kind: B2
- Application number: 11/529,595
- Filed: 2006-09-29
- Published: 2007-04-05
- Granted: 2012-04-03
- Earliest claimed: 2005-09-30
- Assignees: FUJIFILM Corporation
- Inventors: Hisashi Okada
- Web page: https://patentgrep.com/patent/US8147986B2

## CPC

- C07F 15/0086: {Platinum compounds}
- C07F 1/08: Copper compounds
- C07F 3/02: Magnesium compounds
- C07F 15/04: Nickel compounds
- C07F 15/06: Cobalt compounds
- C09K 11/06: containing organic luminescent materials
- H05B 33/14: characterised by the chemical or physical composition or the arrangement of the electroluminescent material {, or by the simultaneous addition of the electroluminescent material in or onto the light source}
- H10K 50/125: specially adapted for multicolour light emission, e.g. for emitting white light
- H10K 85/331: {Metal complexes comprising an iron-series metal, e.g. Fe, Co, Ni}
- H10K 85/341: {Transition metal complexes, e.g. Ru(II)polypyridine complexes (H10K85/331 takes precedence)}
- H10K 85/342: {comprising iridium}
- H10K 85/346: {comprising platinum}
- H10K 85/351: {Metal complexes comprising lanthanides or actinides, e.g. comprising europium}
- C09K 2211/1416: Condensed systems
- C09K 2211/1425: Non-condensed systems
- C09K 2211/1466: containing nitrogen as the only heteroatom
- C09K 2211/1475: containing nitrogen and oxygen as heteroatoms
- C09K 2211/185: of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
- Y10S 428/917: Electroluminescent
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

The invention provides an organic electroluminescent device having at least an organic compound layer provided between a pair of electrodes. The organic electroluminescent device has at least a polymer comprising a metal complex containing a tri- or higher-dentate ligand in the polymer molecule. The metal complex preferably contains a tetra- or higher-dentate ligand in the polymer molecule. At least one of the ligands is preferably a chain. The metal complex preferably contains a transition metal ion or a rare earth metal ion. The metal complex preferably contains a nitrogen atom in its complex structure. Further, the polymer preferably contains the metal complex in its main chain or its side chain.

## Claims

### Claim 1

An organic electroluminescent device comprising an organic compound layer provided between a pair of electrodes, which comprises a polymer represented by the formula
wherein Uem represents a unit comprising a metal complex represented by the following Formula (3-C):
wherein RC1 and RC2 each independently represent an alkyl group or an aryl group; RC3, RC4, RC5, and RC6 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a halogen atom, or a cyano group; each of nC3 and nC6 represents an integer of 0 to 3; each of nC4 and nC5 represents an integer of 0 to 4; when there are plural RC3s, RC4s, RC5s, or RC6s, the plural RC3s, RC4s, RC5s, or RC6s may be the same as each other or different from each other,
the metal complex being linked to the polymer via RC1;
wherein Up represents a unit comprising a hole transporting moiety having the following structure:
wherein the asterisk * represents a site at which the hole transporting moiety bonds to the polymer; and
each of m and n represents a mole percentage that satisfies the equation of m+n=100 mol %, with the mole percent ratio of m:n being in the range of from 5:95 to 20:80.