# US 9,040,718 B2 · Hybrid host materials for electrophosphorescent devices

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- Number: US 9,040,718 B2
- Document ID: US9040718B2
- Status: Granted
- Kind: B2
- Application number: 12/692,462
- Filed: 2010-01-22
- Published: 2010-07-22
- Granted: 2015-05-26
- Earliest claimed: 2009-01-22
- Assignees: University of Rochester
- Applicants: Shaw H. Chen; Lichang Zeng; Thomas Yung-Hsin Lee
- Inventors: Shaw H. Chen; Lichang Zeng; Thomas Yung-Hsin Lee
- Web page: https://patentgrep.com/patent/US9040718B2

## CPC

- C07D 209/82: Carbazoles; Hydrogenated carbazoles
- C07D 251/12: having three double bonds between ring members or between ring members and non-ring members
- C07D 307/91: Dibenzofurans; Hydrogenated dibenzofurans
- C07D 405/10: linked by a carbon chain containing aromatic rings
- C07F 7/081: {comprising at least one atom selected from the elements N, O, halogen, S, Se or Te}
- C07F 9/5325: {Aromatic phosphine oxides or thioxides (P-C aromatic linkage)}
- C08G 61/12: Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
- C08G 61/122: {derived from five- or six-membered heterocyclic compounds, other than imides}
- C08G 61/123: {derived from five-membered heterocyclic compounds}
- C08G 61/124: {with a five-membered ring containing one nitrogen atom in the ring}
- C08G 61/126: {with a five-membered ring containing one sulfur atom in the ring}
- C08G 73/0644: {Poly(1,3,5)triazines}
- C08G 73/0672: {with only one nitrogen atom in the ring}
- C08G 73/08: Polyhydrazides; Polytriazoles; Polyaminotriazoles; Polyoxadiazoles
- C08L 79/04: Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L 79/06: Polyhydrazides; Polytriazoles; Polyamino-triazoles; Polyoxadiazoles
- C08G 2261/3142: fluorene-based, e.g. fluorene, indenofluorene, or spirobifluorene
- C08G 2261/3221: containing one or more nitrogen atoms as the only heteroatom, e.g. pyrrole, pyridine or triazole
- C08G 2261/3241: containing one or more nitrogen atoms as the only heteroatom, e.g. carbazole
- C08G 2261/3424: non-conjugated, e.g. paracyclophanes or xylenes
- C08G 2261/52: Luminescence
- Y10S 428/917: Electroluminescent
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

Compounds (including polymers) for use in hybrid host materials which can be used in electroluminescent devices. The compounds comprise at least one electron-transporting moiety and at least one hole-transporting moiety which are joined by a flexible linker. Hybrid host materials comprising the compounds exhibit stability against phase separation, elevated glass transition temperature, morphological stability against crystallization, and isolation of the electron transporting moiety and hole transporting moiety π-systems.

## Claims

### Claim 1

A compound having the following structure:
2,4,6-tris(4-(3-(6-(9-(2-methylpropyl)carbazol-3-yl)-9-(2-methylpropyl)carbazol-3-yl)propyl)phenyl)-1,3,5-triazine (TRZ-3Cz(MP)2);
2-(4-(3-(6-(9-(2-methylpropyl)carbazol-3-yl)-9-(2-methylpropyl)carbazol-3-yl)propyl)phenyl)-4,6-diphenyl-1,3,5-triazine (TRZ-1Cz(MP)2);
2,4,6-tris(4-(3-(3,6-bis(9-(2-methylpropyl)carbazol-3-yl)carbazol-9-yl)propyl)phenyl)-1,3,5-triazine (TRZ-3Cz(N)Cz(MP)2);
2,4,6-tris(4-(3-(6-(7-(9-(2-methylpropyl)carbazol-3-yl)-9,9-bis(2-methylpropyl)fluoren-2-yl)-9-(2-methylpropyl)carbazol-3-yl)propyl)phenyl)-1,3,5-triazine (TRZ-3Cz(MP)2F(MP));
Tris(4-(3-(6-(9-(2-methylpropyl) carbazol-3-yl)-9-(2-methylpropyl) carbazol-3-yl)propyl)phenyl)amine (TPA-3Cz(MP)2); or
1,3,5-tris(4-(3-(6-(9-(2-methylpropyl)carbazol-3-yl)-9-(2-methylpropyl)carbazol-3-yl)propyl)phenyl)benzene (TPB-3Cz(MP)2).

### Claim 2

A compound having the following structure: