# US 2014/0151646 A1 · Compounds for triplet-triplet annihilation upconversion > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151646 A1 - Document ID: US20140151646A1 - Status: Published application - Kind: A1 - Application number: 13/693,122 - Filed: 2012-12-04 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Universal Display Corporation - Inventors: Chuanjun XIA - Web page: https://patentgrep.com/patent/US20140151646A1 ## CPC - C09K 11/06: containing organic luminescent materials - C07F 15/0033: {Iridium compounds} - C07F 15/0066: {without a metal-carbon linkage} - C07F 15/0093: {without a metal-carbon linkage} - 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 85/791: {Starburst compounds} - C09K 2211/185: of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd - H10K 50/125: specially adapted for multicolour light emission, e.g. for emitting white light - H10K 59/38: comprising colour filters or colour changing media [CCM] - Y02E 10/549: Organic PV cells - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Novel compounds, and in particular, a dendritic system for improved triple-triplet annihilation upconversion (TTA-UC) are provided. The core of the dendrimer compound includes a metal complex, and on the peripheral, multiple acceptor moieties are covalently linked to the core through a spacer. Consequently, a high efficiency TTA-UC system in both solution and solid state is provided, with particularly high efficiency in the solid state. Additionally, organic light emitting devices (OLEDs) comprising a layer including these novel compounds are provided. ## Claims ### Claim 1 A compound for triplet-triplet annihilation upconversion comprising: a metal complex sensitizer core; a first acceptor group; and a first spacer group between the metal complex core and the first acceptor group, wherein the first acceptor group has a first triplet energy lower than a first triplet energy of the metal complex sensitizer core. ### Claim 2 (depends on 1) The compound of claim 1, wherein the first spacer group substantially surrounds the metal complex sensitizer core. ### Claim 3 (depends on 1) The compound of claim 1, further comprising a second spacer group, wherein the second spacer group substantially surrounds the first acceptor group. ### Claim 4 (depends on 3) The compound of claim 3, further comprising a second acceptor group. ### Claim 5 (depends on 4) The compound of claim 4, wherein the second acceptor group substantially surrounds the second spacer group. ### Claim 6 (depends on 1) The compound of claim 1, further comprising a second acceptor group. ### Claim 7 (depends on 1) The compound of claim 1, further comprising a second spacer group. ### Claim 8 (depends on 1) A device comprising a layer, the layer comprising a compound of claim 1. ### Claim 9 (depends on 8) The device of claim 8, wherein the device comprises an OLED. ### Claim 10 (depends on 9) The device of claim 9, further comprising a thin film encapsulation layer disposed over or under the OLED. ### Claim 11 (depends on 1) A consumer product comprising the compound of claim 1. ### Claim 12 A compound for triplet-triplet annihilation upconversion, wherein the compound has the following general structure: wherein A is a metal complex; wherein L1 to Lx is a spacer group; wherein B1 to Bx is an acceptor group B; wherein m1 is greater than 0; wherein mx is equal to or greater than 0, wherein n is greater than 0, and wherein the acceptor group B has a first triplet energy lower than a first triplet energy of the metal complex A. ### Claim 13 (depends on 12) The compound of claim 12, wherein m1 is in the range of 1 to 20. ### Claim 14 (depends on 12) The compound of claim 12, wherein mx is in the range of 0 to 20. ### Claim 15 (depends on 12) The compound of claim 12, wherein n is in the range of 1 to 20. ### Claim 16 (depends on 12) The compound of claim 12, wherein the metal complex is selected from the group consisting of: an iridium complex, an osmium complex, a platinum complex, a palladium complex, a rhenium complex, a ruthenium complex, and a gold complex. ### Claim 17 (depends on 12) The compound of claim 12, wherein the acceptor group B is a fused aromatic group. ### Claim 18 (depends on 12) The compound of claim 12, wherein the acceptor group B is selected from the group consisting of: naphthalene, anthracene, tetracene, pyrene, chrysene, and perylene. ### Claim 19 (depends on 12) The compound of claim 12, wherein the ratio of the acceptor group B to the metal complex A is at least 4. ### Claim 20 (depends on 12) The compound of claim 12, wherein the spacer group L is selected from the group consisting of: alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, ester, and combinations thereof. ### Claim 21 (depends on 12) A device comprising a layer, the layer comprising a compound of claim 12. ### Claim 22 (depends on 21) The device of claim 21, wherein the device comprises a light emitting diode. ### Claim 23 (depends on 21) The device of claim 21, wherein the device comprises an OLED. ### Claim 24 (depends on 23) The device of claim 23, further comprising a thin film encapsulation layer disposed over or under the OLED. ### Claim 25 (depends on 12) A consumer product comprising the compound of claim 12. ### Claim 26 (depends on 12) A photovoltaic device comprising the compound of claim 12. ### Claim 27 (depends on 12) A device, comprising: an organic light emitting device comprising an emissive material having an emissive spectrum; and an up-conversion layer disposed adjacent to the organic light emitting device such that light emitted by the organic light emitting device is incident on the up-conversion layer, the up-conversion layer comprising the compound of claim 12. ### Claim 28 A compound selected from the group consisting of: