Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
37 results about "Excited singlet" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Copper (i) complexes for optoelectronic devices
ActiveUS20130150581A1Short possible emission decay timeDiminished roll-off behaviorFinal product manufactureGroup 5/15 element organic compoundsSolubilityChlorobenzene
The invention relates to neutral mononuclear copper (I) complexes for emitting light and with a structure according to formula (A) in which: M represents: Cu(I); L∩L represents: a single, negatively charged, bidentate ligand; N∩N represents: a diimine ligand (substituted with R and FG), in particular a substituted 2,2′-bipyridine derivative (bpy) or a substituted 1,10-phenanthroline derivative (phen); R represents: at least one sterically demanding substituent for preventing the planarisation of the complex in the excited state; FG=functional group, and represents: at least one second substituent for increasing solubility in organic solvents. The substituent can also be used for electron transport or alternatively for hole transport, said functional group being bound to the diimine ligands either directly or by means of suitable bridges; and the copper (I) complex: having a ΔE(S1−T1) value of less than 2500 cm−1 between the lowest excited singlet state (S1) and the triplet state (T1) which lies below; having an emission lifespan of at most 20 μs; having an emission quantum yield of greater than 40%, and a solubility of at least 1 g / L in organic solvents, in particular polar organic hydrocarbons such as acetone, methyl ethyl ketone, benzene, toluene, chlorobenzene, dichlorobenzene, dichloromethane, chloroform, dichloroethane, tetrachloroethylene, alcohols, acetonitrile or water.
Owner:SAMSUNG DISPLAY CO LTD
Photovoltaic Structures and Method to Produce the Same
InactiveUS20090308456A1Efficient charge transportEfficiently quenchedSolid-state devicesSemiconductor/solid-state device manufacturingElectron donorHost material
The present disclosure relates to the field of organic optoelectronics. More particularly, the present disclosure relates to photovoltaic structures and to methods to produce the same. One aspect of the disclosure is a photovoltaic structure comprising:an electron acceptor material, andan electron donor material, wherein the electron donor material comprises:a host material, anda guest material,wherein the energy of the lowest excited singlet state of the guest is smaller than the energy of lowest excited singlet state of the host, wherein the fluorescence emission spectrum of the host overlaps with at least part of the absorption spectrum of the guest and wherein the energy of the lowest excited triplet state of the guest is larger than the energy of the lowest excited triplet state of the host.
Owner:INTERUNIVERSITAIR MICRO ELECTRONICS CENT (IMEC VZW)
Singlet harvesting with organic molecules for optoelectronic devices
InactiveUS20130264518A1Reduce intersystem crossing time constantEnhanced couplingElectroluminescent light sourcesSolid-state devicesTriplet stateComputational chemistry
The invention relates to a composition comprising an organic emitter molecule, this molecule having a ΔE(S1−T1) value between the lowermost excited singlet state (S1) and the triplet state beneath it (T1) of less than 2500 cm−1, and an optically inert atom or molecule for reducing the inter-system crossing time constant of the organic molecule to less than 10−6 s.
Owner:CYNORA
Organic light emitting device with reverse intersystem crossing light emitting molecules
InactiveUS7034454B2Break the limitationsDischarge tube luminescnet screensElectroluminescent light sourcesHigh concentrationQuantum yield
There is provided an organic light emitting device to break through the limit of 25% of internal quantum efficiency and 5% of external quantum efficiency while using singlet luminescence. Specifically provided is an organic light emitting device comprising an anode, an organic layer and a cathode, wherein light-emitting molecules present in an emissive layer which is at least a part of the organic layer and responsible for luminescence by charge injection effect transition from a triplet excited state having an energy level higher than a lowest excited singlet state to a singlet excited state and effect fluorescent emission in a fluorescence quantum yield of 60% or more in the same state as existing in the emissive layer, and wherein the emissive layer comprises the light-emitting molecules as a main component in an amount of 50 wt % or more, or is doped with the light-emitting molecules at a high concentration of 7 wt % or more, or is a layer in which the light-emitting molecules are excitable by direct trapping of electrons and holes has enabled to break through the limit of 25% of internal quantum efficiency and 5% of external quantum efficiency while using singlet luminescence.
Owner:CANON KK
Hydrocarbon compound, charge transfer material, charge transfer material composition and organic electroluminescent element
Novel hydrocarbons which are excellent in heat resistance and light resistance and in solubility in organic solvents and which exhibit high energy levels of excited singlet and triplet states and wide electric oxidation-reduction potentials have partial structures represented by the general formula (I) in the molecule: (I) wherein G is a substituent represented by the general formula (II); and R<1> and R<2> are each independently an arbitrary hydrocarbon group, with the proviso that the benzene ring to which R<1>, R<2> and G are bonded has no substituent except R<1>, R<2> and G: (II) wherein R<3> to R<5> are each independently hydrogen or an arbitrary hydrocarbon group, with the proviso that the terphenyl group in the general formula (II) has no substituent except R<3> to R<5>.
Owner:MITSUBISHI RAYON CO LTD
Method of deep tissue imaging using multi-photon excitation of a fluorophore
A method is provided for deep tissue imaging using multi-photon excitation of a fluorescent agent. The fluorescent agent is irradiated with an ultrafast laser to produce an excited singlet state (Sn) which subsequently undergoes non-radiative relaxation to a first singlet state (S1). The S1 state undergoes fluorescence to the ground state S0 to produce an emission wavelength. Both the excitation and emission wavelengths are within the near infrared optical window, thereby permitting deep tissue penetration for both the incoming and outgoing signals.
Owner:ALFANO ROBERT R
Organic compound, charge-transporting material, composition for charge-transporting material and organic electroluminescent device
ActiveUS8022617B2Improve heat resistanceGood natureOrganic chemistryDischarge tube luminescnet screensSolubilitySimple Organic Compounds
An organic compound having excellent heat resistance, an excellent amorphous nature, an excellent ability to transport charges, highly excited singlet and triplet states, and excellent solubility in an organic solvent is an organic compound represented by Formula (I):wherein Ar1 represents an optionally-substituted aromatic hydrocarbon group, an optionally-substituted aromatic heterocyclic group, or an optionally-substituted alkyl group; Ar2 represents an optionally-substituted aromatic hydrocarbon group or an optionally-substituted aromatic heterocyclic group; R1 and R2 each represent a hydrogen atom or a substituent, and R1 and R2 may be bonded to each other to form a ring; and Q is represented by Formula (I-1) or (I-2):wherein Ar3 to Ar5 each represent an optionally-substituted aromatic hydrocarbon group or an optionally-substituted aromatic heterocyclic group, and Ar3 and Ar4 may be bonded to each other to form a ring.
Owner:MITSUBISHI CHEM CORP
Organic molecules for oleds and other optoelectronic devices
ActiveUS20150155500A1Low working voltageHigh resolutionFinal product manufactureElectroluminescent light sourcesTriplet stateIntersystem crossing
The invention relates to a composition having an organic emitter molecule, which has a ΔE(S1−T1) value between the lowest excited singlet state (S1) and the triplet state thereunder of less than 3000 cm−1 and an atom or molecule for reducing the intersystem crossing time constant of the organic molecule.
Owner:SAMSUNG DISPLAY CO LTD
Method, system and apparatus for an enhanced electrically pumped oxygen iodine laser
In one embodiment of the present invention an oxygen iodine laser includes a gas mixing section. Ground state oxygen and a carrier gas are introduced into the first gas mixing section, sometimes separately. The laser includes a discharge region to generate at least said excited oxygen from the flow of the first gas mixing section. A sensitizer gas having a lower ionization threshold than ground state oxygen is also introduced into the first gas mixing section, such that electrons are more easily produced in the electrical generator. The laser system includes introducing a source of iodine into the excited singlet delta oxygen flow to generate a laser-active gas. In another embodiment a conditioner is placed into the gas mixing section to help mix the flow and / or introduce one or more of the aforementioned gases.
Owner:CU AEROSPACE +1
Conjugated polymer with aryl-containing side chain, and preparation method and applications thereof
ActiveCN107057043AImprove external quantum efficiencyEasy to prepareSolid-state devicesSemiconductor/solid-state device manufacturingElectricityAryl
The invention provides a conjugated polymer with an aryl-containing side chain, and a preparation method and applications thereof. The conjugated polymer with an aryl-containing side chain has a structure shown as the formula (I). The energy difference between a first excited singlet state and a first excited triplet state of the polymer is small, so that the polymer has E type delay fluorescent emission, the corrugated polymer can be applied to an electroluminescence device by selecting specific polymer units and selecting a specific polymer unit ratio, the external quantum efficiency of the electroluminescence device prepared from the obtained corrugated polymer is high, and the efficiency roll-off of the electroluminescence device can be efficiently inhibited by utilizing the polymer. In addition, the preparation method of the polymer is simple, and the device can be prepared by using spin-coating, ink-jet printing and other simple solution processing modes when the polymer is used for manufacturing the device, so that the preparation method of the electroluminescence device can be greatly simplified.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Heat-inducible delayed fluorescence polymer with main chain comprising diphenyl silane and carbazole unit and preparation method of heat-inducible delayed fluorescence polymer
The invention provides a heat-inducible delayed fluorescence polymer with a main chain comprising diphenyl silane and carbazole unit and having a structure as shown in formula (I) and a preparation method. The detection discovers that an energy gap between a first excited singlet state and a first excited triplet state of the polymer is small and has a property for thermally inducing the delay ofthe fluorescence emission. By introducing the diphenyl silane and the carbazole unit, the polymer has a high triplet state energy level, and can effectively shielding a quenching effect between luminescence units, so that the polymer has high-efficient property for thermally inducing the delay of the fluorescence emission. When the polymer is applied to electroluminescence, the full-color luminescence can be realized, and the high-efficient fluorescence emission at a pure-film state can be realized; and additionally, the preparation method of the polymer is simple, and the polymer is expectedto be applied to an electroluminescent device of the solution processing.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Polymer with main chain containing sulphone unit as well as preparation method and application thereof
ActiveCN106928436AImprove external quantum efficiencyEasy to prepareSolid-state devicesSemiconductor/solid-state device manufacturingElectricityQuantum efficiency
The invention provides a polymer with a main chain containing a sulphone unit. The polymer is of a structure shown in a formula (I). The polymer provided by the invention has thermally induced delayed fluorescence emission as energy level difference between a first excited singlet state and a first excited triplet state of the polymer provided by the invention is smaller by selecting a specific polymerization unit and selecting a specific polymerization unit ratio; and meanwhile, when the polymer is applied to an electroluminescent device, the obtained external quantum efficiency of the electroluminescent device is high, and efficiency roll-off of the electroluminescent device can be effectively inhibited. Besides, the preparation method of the polymer provided by the invention is simple, and the obtained polymer can be prepared in simple solution processing ways such as spin coating and ink-jet printing when being used for preparing the electroluminescent device, so that a preparation technology of the electroluminescent device is greatly simplified.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Thermal activation delayed fluorescence material and application thereof
ActiveCN111393448AImprove thermal stabilityIncrease profitGroup 4/14 element organic compoundsSolid-state devicesChemical physicsReceptor
The invention provides a thermal activation delayed fluorescence material and an application thereof. The thermal activation delayed fluorescence material has the following structure: a compound taking tris([1, 2, 4] triazole)[4, 3-a: 4', 3'-c: 4'', 3''-e][1, 3, 5] triazine as a receptor core has the property of thermally activated delayed fluorescence, and the receptor has a rigid planar structure, so that the thermal stability of the material is effectively improved; a large torsion angle between a donor unit and an acceptor unit can inhibit intermolecular accumulation; the solubility and the film-forming property are improved; meanwhile, the larger torsion angle can reduce overlapping of molecular front line orbits, so that the lowest excited singlet state-triplet state energy level difference is reduced, triplet state excitons can return to the singlet state through reverse intersystem crossing and finally return to the ground state in a radiation transition mode to emit fluorescence, the exciton utilization rate is increased, and finally the purpose of improving the device efficiency is achieved.
Owner:SHENZHEN UNIV
Organic molecules having two non-conjugated bridges between a donor and an acceptor for effective thermally activated delayed fluorescence for use in optoelectronic devices
ActiveUS20180219159A1Improve rigidityImprove quantum efficiencyOrganic chemistrySolid-state devicesOrganic groupChemical groups
The invention relates to purely organic emitter molecules of a new type according to formula I and to the use thereof in optoelectronic devices, in particular in organic light-emitting diodes (OLEDs), comprising donor D: an aromatic or heteraromatic chemical group on which the HOMO is located and which optionally has at least one substitution; acceptor A: an aromatic or heteromatic chemical group on which the LUMO is located and which optionally has at least one substitution; bridge B1, bridge B2: organic groups that link the donor D and the acceptor A in a non-conjugated manner; wherein in particular the energy difference ΔE(S1−T1) between the lowest excited singlet (S1) state of the organic emitter molecule and the triplet (T1) state of the organic emitter molecule lying thereunder is less than 2000 cm−1.
Owner:SICHUAN KNOWLEDGE EXPRESS INST FOR INNOVATIVE TECH CO LTD
Organic electroluminescent device
InactiveCN109671850AImprove luminous efficiencySolid-state devicesSemiconductor/solid-state device manufacturingElectricityTriplet state
The invention discloses an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic functional layer. The organic functional layer at leastcomprises a light-emitting layer, the main body material of the light-emitting layer is a thermally activated delayed fluorescent material, the energy difference [delta]Est of the excited singlet state of the main body material and the lowest excited triplet state of 77K meets a formula (1), and the energy level relation of the main body material and the guest material meets a formula (2): in theformula (1),[delta]Est(main body)<0.3eV, and in the formula (2), ES1(main body)>ES1(guest material), the guest material is selected from a type of fluorochrome with a special structure, the nuclear parent group of the compound is a triplet state energy level T1 larger than a large sterically hindered group of 2.2eV without excited state energy distribution. The device fully utilizes the triplet state energy of the main body material during electroluminescence so as to effectively improve the luminous efficiency of the device.
Owner:BEIJING ETERNAL MATERIAL TECH +1
Copper (I) complexes for optoelectronic devices
ActiveUS9024026B2Short possible emission decay timeDiminished roll-off behaviorGroup 8/9/10/18 element organic compoundsGroup 5/15 element organic compoundsSolubilityChlorobenzene
Owner:SAMSUNG DISPLAY CO LTD
Organic room-temperature phosphorescent material as well as preparation method and application thereof
InactiveCN113387905AImprove transfer characteristicsThe production is conducive toStampsOrganic chemistry methodsIntersystem crossingLight-emitting diode
The invention discloses an organic room-temperature phosphorescent material as well as a preparation method and application thereof. The organic room-temperature phosphorescent material is shown as a formula (I) defined in the description. The material generates an intramolecular charge transfer state after being excited by an external light source, intersystem crossing is promoted, lone pair electrons of an oxygen bridge can enable an excited singlet state to have more n-pi * characteristics, and generation of room-temperature phosphorescence is facilitated. The material disclosed by the invention can be applied to a plurality of fields such as organic light emitting diodes, molecular sensing, anti-counterfeiting marks and biological imaging.
Owner:SOUTHEAST UNIV
Red thermal induction delay fluorescent polymer and preparation and application thereof
ActiveCN107987256AImprove external quantum efficiencyEasy to prepareSolid-state devicesSemiconductor/solid-state device manufacturingElectricityQuantum efficiency
The invention provides a red thermal induction delay fluorescent polymer with a structure as shown in the formula (I). The provided polymer has a smaller energy level difference between a first excited singlet state and a first excited triplet state, and achieves thermal induction delay fluorescence emission; the provided polymer chooses a specific polymerization unit and the specific ratio of thepolymerization units, so that the external quantum efficiency of an obtained electroluminescent device is high when the obtained polymer is applied to the electroluminescent device, and the roll-offthe efficiency of the electroluminescent device can be inhibited. In addition, the preparation method of the provided polymer is simple, the obtained polymer can use the simple solution processing mode like spin-coating and ink-jet printing when being used to manufacture a device, so that the manufacturing process of the electroluminescent device is greatly simplified.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Conjugated polymer and preparation method and application thereof
ActiveCN111171288AImprove external quantum efficiencyEnhanced fluorescence emissionSolid-state devicesSemiconductor/solid-state device manufacturingQuinoxalineQuantum efficiency
The invention provides a conjugated polymer and a preparation method and application thereof. The main chain of the polymer with the structure as shown in the formula (I) contains an electron acceptorof quinoxaline or a derivative thereof, and a side group is an electron donor. What is found through experiments is that the energy level difference between the first excited singlet state and the first excited triplet state of the conjugated polymer is small, and therefore the conjugated polymer has E-type delayed fluorescence emission and is long-wavelength red to dark red E-type delayed fluorescence emission. The polymer provided by the invention has good luminescence property and low turn-on voltage when being applied to an electroluminescent device, and the obtained electroluminescent device not only has high external quantum efficiency under a low-brightness condition, but also has high external quantum efficiency under a high-brightness condition, so that the application range of the device is expanded.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Organic electroluminescent element, display device, illumination device, luminescent layer forming composition, and compound
PendingCN113169285AImprove organic electroluminescent propertiesSolid-state devicesSemiconductor/solid-state device manufacturingFluorescent spectraDisplay device
Disclosed is an organic electroluminescent element having a luminescent layer that comprises a host compound as a first component, a thermally-activated delayed fluorescence substance as a second component, and a boron-atom-containing compound as a third component, wherein the following relational formula is satisfied: (Excited singlet energy level determined from shoulder on peak short wavelength side of fluorescence spectrum of first component)>=(Excited singlet energy level determined from shoulder on peak short wavelength side of fluorescence spectrum of second component)>=(Excited singlet energy level determined from shoulder on peak short wavelength side of fluorescence spectrum of third component).
Owner:KWANSEI GAKUIN EDUCATIONAL FOUND +1
Delayed fluorescence material and organic electroluminescence device
ActiveUS9783734B2Forming efficiency is highImprove efficiencyElectroluminescent light sourcesSolid-state devicesChemical compoundOrganic electroluminescence
A delayed fluorescence material containing a mixture of an acceptor compound and a donor compound that satisfies the following formulae (1) to (4):T1A−S1>0.2 eV (1)T1D−S1≧0.2 eV (2)|LUMOA|>2.0 eV (3)|HOMOD|≦5.3 eV (4)wherein T1A represents the excited triplet energy of the acceptor compound; T1D represents the excited triplet energy defined of the donor compound; S1 represents the excited singlet energy of the exciplex; LUMOA represents the energy level of LUMO of the acceptor compound; and HOMOD represents the energy level of HOMO of the donor compound.
Owner:KYULUX INC
Organic electroluminescent device and display device
ActiveCN112701231AImprove luminous efficiencyExtended service lifeSolid-state devicesSemiconductor/solid-state device manufacturingChemical physicsDisplay device
The invention provides an organic electroluminescent device and a display device. The organic electroluminescent device comprises a light-emitting layer; the light-emitting layer comprises a triplet state- triplet state annihilation material and a resonance type thermal activation delayed fluorescence material. The first excited singlet energy level of the triplet state-triplet state annihilation material is greater than the first excited singlet energy level of the resonance type thermal activation delayed fluorescence material, and the first excited triplet energy level of the triplet state-triplet state annihilation material is less than the first excited triplet energy level of the resonance type thermal activation delayed fluorescence material. The rotary orbit coupling constants SOC of the nth excited triplet state and the first excited singlet state of the triplet state-triplet state triplet annihilation material meet the following requirements: n is larger than or equal to 2 and is less than or equal to 6, and SOC is larger than or equal to 0.30 cm<-1>. The organic electroluminescent device provided by the invention has relatively excellent light-emitting efficiency, service life and color purity.
Owner:KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD +1
Singlet harvesting with organic molecules for optoelectronic devices
ActiveCN103038309AReduced intersystem crossing (ISC)-timeIncrease ISC-rateElectroluminescent light sourcesSolid-state devicesTriplet stateComputational chemistry
The invention relates to a composition comprising an organic emitter molecule, this molecule having a [delta]E(S1-T1) value between the lowermost excited singlet state (S1) and the triplet state beneath it (T1) of less than 2500 cm-1, and an optically inert atom or molecule for reducing the inter-system crossing time constant of the organic molecule to less than 10-6 s.
Owner:SAMSUNG DISPLAY CO LTD
A thermally induced delayed fluorescence compound and its preparation method and application
ActiveCN109810097BHigh photoluminescence efficiencyPhotoluminescence efficiency is high in solid stateOrganic chemistrySolid-state devicesQuantum efficiencyCarbazole
The present invention provides a heat-induced delayed fluorescence compound and its preparation method and application. The compound provided by the present invention has a structure shown in formula (I). The present invention introduces a substituted aromatic group at the 1,8 positions of carbazole, and at the same time The other positions of the carbazole are supplemented with specific groups, so that the obtained compound has a small energy level difference between the first excited singlet state and the first excited triplet state, thereby realizing effective delayed fluorescence. Moreover, the photoluminescent efficiency of the compound is higher in the solid state, which is conducive to the full utilization of the triplet excitons. When the compound is applied to electroluminescent devices, it can break through the 5% external quantum efficiency limit of traditional fluorescent materials.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Thermally activated delayed fluorescence molecules, materials comprising said molecules, and devices comprising said materials
A thermally activated delayed fluorescence (TADF) molecule comprising: a central electron donor moiety, wherein the central electron donor moiety is formed of a conjugated multi-ring system comprisingthree nitrogen atoms; and three electron acceptor moieties, each bonded to the central electron donor moiety via one of the three nitrogen atoms, wherein at least one of the three electron acceptor moieties is twisted relative to the central electron donor moiety defining a torsion angle in a range 40 degrees to <90 degrees whereby the TADF molecule has a photoluminescence quantum yield of >60% and a rate of reverse intersystem crossing from a lowest excited triplet state to a lowest excited singlet state of at least 1*10<6> s<-1>.
Owner:UNIVERSITY OF DURHAM
A kind of conjugated polymer containing aroyl group in side chain and its preparation method and application
ActiveCN107057043BImprove external quantum efficiencyEasy to prepareSolid-state devicesSemiconductor/solid-state device manufacturingArylElectricity
The invention provides a conjugated polymer containing an aroyl group in the side chain and its preparation method and application. The conjugated polymer containing an aroyl group in the side chain has the structure of formula (I). The polymer provided by the invention is the first The energy level difference between the first excited singlet state and the first excited triplet state is small, so that the polymer has E-type delayed fluorescence emission, and the conjugated polymer provided by the present invention is selected by selecting a specific polymer unit and selecting a specific polymer unit ratio, so that the obtained conjugated polymer can be applied to electroluminescent devices, and the external quantum efficiency of the electroluminescent device made by using the obtained conjugated polymer is high, and the polymer provided by the invention can effectively inhibit Efficiency roll-off of electroluminescent devices; in addition, the preparation method of the polymer provided by the present invention is simple, and the obtained polymer can be prepared by simple solution processing methods such as spin coating and inkjet printing when used to make devices, which greatly simplifies A method for fabricating electroluminescent devices.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Hydrocarbon compound, charge transfer material, charge transfer material composition and organic electroluminescent element
Novel hydrocarbons which are excellent in heat resistance and light resistance and in solubility in organic solvents and which exhibit high energy levels of excited singlet and triplet states and wide electric oxidation-reduction potentials have partial structures represented by the general formula (I) in the molecule: (I) wherein G is a substituent represented by the general formula (II); and R<1> and R<2> are each independently an arbitrary hydrocarbon group, with the proviso that the benzene ring to which R<1>, R<2> and G are bonded has no substituent except R<1>, R<2> and G: (II) wherein R<3> to R<5> are each independently hydrogen or an arbitrary hydrocarbon group, with the proviso that the terphenyl group in the general formula (II) has no substituent except R<3> to R<5>.
Owner:MITSUBISHI RAYON CO LTD
Red-light thermally-induced delayed fluorescence material and preparation method thereof, and organic electroluminescent device
PendingCN113321617AImprove luminous performanceImprove solubilityAmino preparation from aminesOrganic compound preparationKetonePerylene derivatives
The invention provides a red-light thermally-induced delayed fluorescence material and a preparation method thereof, and an organic electroluminescent device. The red-light thermally-induced delayed fluorescence material provided by the invention is a red-light thermally-induced delayed fluorescence material with a multi-arm star-shaped structure as shown in a formula (I), the band gap is narrow, and the energy level difference between a first excited singlet state and a first excited triplet state is small, so that the compound has a red-light thermally-induced delayed fluorescence emission property. Moreover, a rigid truxene ketone acceptor unit contains three carbonyl groups, the reverse intersystem crossing rate of the electroluminescent material based on a truxene ketone derivative is favorably improved by utilizing the high intersystem crossing rate of the carbonyl groups, and meanwhile, the rigid plane structure is favorable for inhibiting non-radiative transition and improving the luminescent property of the material. Meanwhile, the truxene derivative as shown in the formula (I) has a multi-arm star-shaped structure, so that the weakening of intermolecular interaction is facilitated, the solubility of the material is improved, and a solution processing device is facilitated.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Organic light-emitting device
ActiveUS11335872B2Improve efficiencyLong lastingSolid-state devicesSemiconductor/solid-state device manufacturingOrganic light emitting deviceLuminescent material
An organic light emitting device having an exciton generation layer that contains a compound having a difference between the lowest excited singlet energy level ES1 and the lowest excited triplet energy level ET1 thereof of 0.3 eV or less, or an exciplex to emit delayed fluorescence, and a light emitting layer that contains a light emitting material has a high efficiency and a long lifetime.
Owner:KYULUX INC
Organic molecules for OLEDs and other optoelectronic devices
ActiveUS10312456B2Electroluminescent light sourcesSolid-state devicesTriplet stateIntersystem crossing
Owner:SAMSUNG DISPLAY CO LTD
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com