- Organic light-emitting diode having alleviated luminance reduction in low dynamic range
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The present disclosure relates to an organic light-emitting diode which can operate at a low voltage with high efficiency and exhibits the effect of having an alleviated luminance reduction rate in a low dynamic range. More particularly, the organic light-emitting diode comprises: a first electrode; a second electrode facing the first electrode; and a light-emitting layer and a charge balance control layer arranged sequentially between the first and the second electrode, wherein the light-emitting layer includes at least one of amine derivative compounds represented by the following Chemical Formula A and the charge balance control layer includes at least one of anthracene derivative compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A, B, and C are as defined in the specification.
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Page/Page column 61; 63-64
(2022/02/22)
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- ORGANIC LIGHT-EMITTING DIODE HAVING LONG LIFESPAN, LOW VOLTAGE, AND HIGH EFFICIENCY PROPERTY
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The present disclosure relates to an organic light-emitting diode and, more particularly, to an organic-light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer intercalated between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A and at least one of the anthracene compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A to C are the same as in the specification.
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Paragraph 0166-0167
(2021/09/17)
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- Visible Light-Induced Borylation of C-O, C-N, and C-X Bonds
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Boronic acids are centrally important functional motifs and synthetic precursors. Visible light-induced borylation may provide access to structurally diverse boronates, but a broadly efficient photocatalytic borylation method that can effect borylation of a wide range of substrates, including strong C-O bonds, remains elusive. Herein, we report a general, metal-free visible light-induced photocatalytic borylation platform that enables borylation of electron-rich derivatives of phenols and anilines, chloroarenes, as well as other haloarenes. The reaction exhibits excellent functional group tolerance, as demonstrated by the borylation of a range of structurally complex substrates. Remarkably, the reaction is catalyzed by phenothiazine, a simple organic photocatalyst with MW 200 that mediates the previously unachievable visible light-induced single electron reduction of phenol derivatives with reduction potentials as negative as approximately - 3 V versus SCE by a proton-coupled electron transfer mechanism. Mechanistic studies point to the crucial role of the photocatalyst-base interaction.
- Arman, Hadi D.,Dang, Hang. T.,Haug, Graham C.,He, Ru,Jin, Shengfei,Larionov, Oleg V.,Nguyen, Viet D.,Nguyen, Vu T.,Schanze, Kirk S.
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supporting information
(2020/02/04)
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- ORGANIC COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT INCLUDING SAME
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The present invention relate to a novel organic compound and an organic electroluminescent device including the same, and in particular, to a novel dibenzofuran-based compound having excellent thermal stability, carrier transport ability, light emitting a
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Paragraph 0095-0097; 0102-0104
(2020/08/05)
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- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING SAME, AND ELECTRONIC DEVICE THEREFOR
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The present disclosure provides: a compound capable of providing high light-emitting efficiency, low driving voltage, and improved lifetime of a device; an organic electronic element using the same; and an electronic device therefor.
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Paragraph 0091-0093; 0100-0102
(2020/02/19)
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- Dibenzothiophene dioxide-benzofuro carbazole based bipolar host material for yellow and red phosphorescent OLEDs
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2-(12H-benzofuro[3,2-a]carbazol-12-yl)dibenzo[b,d]thiophene 5,5-dioxide (DBT-INFUR) is a bipolar host material for yellow and red phosphorescent OLEDs. DBT-INFUR was designed and synthesized between dibenzothiphene acceptor and benzofuro carbazole donor with a yield of 60percent. We constructed two different devices, namely a yellow and a red phosphorescent OLEDs, and we compared the device properties with reference 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP). DBT-INFUR based yellow phosphorescent OLED device exhibited maximum current and external quantum efficiencies of 41.07 cd/A and 16.5percent, respectively and which is better than that of reference CBP based similar device (27.66 cd A, 10.15percent). DBT-INFUR based red phosphorescent OLED (12.44percent) revealed higher efficiencies when compared to the reference (7.64percent) device. The bipolar DBT-INFUR showed excellent host properties with yellow and red phosphorescent devices.
- Bae, Il-Ji,Braveenth, Ramanaskanda,Chai, Kyu Yun,Choi, Seung Yu,Jang, Hee Jung,Kim, Bo Mi,Kim, Miyoung,Oh, Su Bin,Park, Young Hee,Raagulan, Kanthasamy,Wu, Qiong
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- Tertiary amine derivatives and organic electroluminescent device including the same
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Provided is a tertiary amine derivative which contributes to a substantial increase in service life of an organic electroluminescent device by minimizing damages to organic matter inside the organic electroluminescent device via effective absorption of a high-energy external light source in the UV region. According to the present invention, the organic electroluminescent device comprises: a first electrode and a second electrode; and one or more organic material layers disposed between the first electrode and the second electrode, wherein the organic material layers comprise a tertiary amine derivative represented by chemical formula 1. In the chemical formula 1, Z_1, Z_2, and Z_3 are each independently O or S.COPYRIGHT KIPO 2020
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Paragraph 0195-0198
(2020/02/01)
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- COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT USING SAME, AND ELECTRONIC DEVICE COMPRISING SAME ORGANIC ELECTRONIC ELEMENT
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Provided are an organic electric element and an electronic device comprising the same. According to the present invention, the organic electric element uses a mixture of compounds as a phosphorescent host material which can achieve a high light-emitting efficiency and a low driving voltage and can greatly improve a lifespan in an organic electric element.
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Paragraph 0175; 0324-0325; 0334-0335
(2019/05/18)
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- Anthracene organic luminescence compound, and preparation method and application thereof
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The invention relates to the technical field of organic optoelectronic materials and relates to an anthracene organic luminescence compound, a preparation method thereof and an organic electroluminescence device. The anthracene organic luminescence compound has a structure shown as a formula I: the formula 1 is shown in the description. Compared with other electron transfer layer materials or luminescent layer materials, the novel anthracene organic luminescence compound provided by the invention used as an electron transfer layer material or luminescent layer material of the organic electroluminescence device has the advantage that the luminous efficiency of the device prepared from the material is obviously promoted, and service life is obviously prolonged. The anthracene organic luminescence compound has the advantages of relatively short synthetic route, simple process, easily acquired raw materials, low cost and suitability for industrial production.
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Paragraph 0109-0116
(2019/07/01)
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- An efficient method for the hydrolysis of potassium organotrifluoroborates promoted by montmorillonite K10
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An efficient and non-expensive method for conversion of diverse potassium organotrifluoroborates to their corresponding boronic acids promoted by montmorillonite K10 using water as the reaction solvent is described. Further interconversion of potassium organotrifluoroborates to their corresponding boronic esters, via boronic acid intermediates was also successfully accomplished. The products were obtained in good yields, being the rate of hydrolysis influenced by the type of substituent present in the boronic acid.
- Silva, Renato L.,Santos, Cosme S.,Santos, Jonh A. M.,Oliveira, Roberta A.,Menezes, Paulo H.,Freitas, Juliano C. R.
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p. 1777 - 1785
(2018/09/04)
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- Photoinduced Miyaura Borylation by a Rare-Earth-Metal Photoreductant: The Hexachlorocerate(III) Anion
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The first photoinduced carbon(sp2)–heteroatom bond forming reaction by a rare-earth-metal photoreductant, a Miyaura borylation, has been achieved. This simple, scalable, and novel borylation method that makes use of the hexachlorocerate(III) anion ([CeIIICl6]3?, derived from CeCl3) has a broad substrate scope and functional-group tolerance and can be conducted at room temperature. Combined with Suzuki–Miyaura cross-coupling, the method is applicable to the synthesis of various biaryl products, including through the use of aryl chloride substrates.
- Qiao, Yusen,Yang, Qiaomu,Schelter, Eric J.
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supporting information
p. 10999 - 11003
(2018/07/31)
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- Novel organic compounds for organic light-emitting diode and organic light-emitting diode including the same
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The present invention relates to a compound for organic light-emitting diodes that can operate organic light-emitting diodes at a low driving voltage and an organic light-emitting diode comprising the same and, more particularly, to a compound for use as a fluorescent host in organic light-emitting diodes, which can bring about excellent diode properties by operating organic light-emitting diodes at a low driving voltage, and an organic light-emitting diode comprising the same.
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Paragraph 0112-0113
(2018/02/22)
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- Organic light-emitting diode with high efficiency
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The present disclosure relates to an organic light-emitting diode exhibiting high luminance efficiency, low-voltage operation, and long lifespan and, more particularly, to an organic light-emitting diode, comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer and an electron density control layer sequentially arranged between the first electrode and the second electrode wherein the light-emitting layer includes at least one of the amine compounds represented by Chemical Formula A or B and the electron density control layer includes at least one of the compounds represented by Chemical Formulas F to H. The structures of Chemical Formulas A, B, and F to H are as described in the specification.
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Paragraph 0327-0328
(2018/09/02)
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- DIBENZOFURAN AND DIBENZOTHIOPHENE DERIVATIVES AND ORGANIC LIGHT-EMITTING DEVICES CONTAINING THEM
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A compound of formula (I) wherein Z is a group of formula (II) and Core is selected from groups of formula (IIIa) or (IIIb) wherein X is S or O; R1 is a substituent; n is 0 or a positive integer; Ar1 independently in each occurrence is an arylene group; R2 is a substituent; R3 is a substituent; R4 is an arylene or heteroarylene group; Y is C or Si; a is 1, 2 or 3; b is 0 or a positive integer; and c is 0 or a positive integer. The compound of formula (I) may be used as a host for a light-emitting dopant in an organic light-emitting device.
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- Radical Metal-Free Borylation of Aryl Iodides
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A simple metal-free borylation of aryl iodides mediated by a fluoride sp 2 -sp 3 diboron adduct is described. The reaction conditions are compatible with various functional groups. Electronic effects of substituents do not affect the borylation while steric hindrance does. The reaction proceeds via a radical mechanism in which pyridine serves to stabilize the boryl radicals, generated in situ.
- Pinet, Sandra,Liautard, Virginie,Debiais, Mégane,Pucheault, Mathieu
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p. 4759 - 4768
(2017/10/03)
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- ORGANIC LIGHT EMITTING DIODE FOR HIGH EFFICIENCY
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Disclosed herein is an organic light-emitting diode, comprising: a first electrode, a second electrode opposite the first electrode, and a light-emitting layer and an electron-density-controlling layer in that order between the first electrode and the sec
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Paragraph 0149-0150
(2017/02/02)
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- Organic light-emitting element capable of low-voltage drive and having long life
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The present invention relates to an organic light-emitting element capable of low-voltage drive and also having a long life, and, more specifically, relates to an organic light-emitting element comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer interposed between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one amine compound represented by [chemical formula A] or [chemical formula B], and at least one compound represented by [chemical formula D], and the structures of [chemical formula A], [chemical formula B] and [chemical formula D] are the same as given in the detailed description of the invention.
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Paragraph 0484; 0485; 0486; 0488; 0489
(2017/10/13)
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- Lanthanide chelate for new chromophore structure
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The present application discloses novel lanthanide chelate designs (Formula (I) and Formula (III)) having fluorenyl-, fluorenylethynyl, 9H-carbazolyl-, 9H-carbozolylethynyl-, dibenzothiophenyl-, dibenzothiophenylethynyl-, dibenzofuranyl or dibenzofuranylethynyl pyridine chromophores around an emitting lanthanide ion, e.g. an europium ( 111 ) ion. The three-membered ring chromophores exhibit high molar absorptivity and luminescence with lanthanide ions. The application also discloses a detectable molecule comprising a biospecific binding reactant useful in bioaffinity based binding assay, luminescent lanthanide chelating ligands, as well as a solid support conjugated with the chelates.
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Paragraph 0099; 0117; 0188
(2017/08/26)
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- Organometallic compound and organic light-emitting device including the same
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Organic metal compound and said organometallic compounds is disclosure is an organic light emitting device. (by machine translation)
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Paragraph 0487; 0501; 0502; 0503; 0504; 0505
(2016/10/07)
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- Nickel-Catalyzed Borylation of Aryl- and Benzyltrimethylammonium Salts via C-N Bond Cleavage
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By developing a mild Ni-catalyzed system, a method for direct borylation of sp2 and sp3 C-N bonds has been established. The key to this hightly efficient C-N bond borylative cleavage depends on the appropriate choice of the nickel catalyst Ni(COD)2, ICy·HCl as a ligand, and the use of 2-ethoxyethanol as the cosolvent. This transformation shows good functional group compatibility and can serve as a powerful synthetic tool for gram-scale synthesis and late-stage C-N borylation of complex compounds.
- Hu, Jiefeng,Sun, Heqing,Cai, Wangshui,Pu, Xinghui,Zhang, Yemin,Shi, Zhuangzhi
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- BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE CARRYING ARYL- OR HETEROARYLNITRIL GROUPS FOR ORGANIC LIGHT EMITTING DIODES
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Novel benzimidazolo[1,2-a]benzimidazoles carrying aryl-or heteroarylnitril groups, an electronic device, comprising said novel benzimidazolo[1,2-a]benzimidazoles carrying aryl-or het- eroarylnitril groups, which is preferably an electroluminescent device,acharge transport layer, a charge/exciton blocker layer, or an emitting layer comprisingsaid novel benzimidazolo[1,2- a]benzimidazoles carrying aryl-or heteroarylnitril groups, an apparatus selected from the group consisting of stationary visual display units; mobile visual display units; illumination units; key- boards; items of clothing; furniture; wallpaper, comprising said organic electronic device, or said charge transport layer, said charge/exciton blocker layer, or said emitting layer.
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Page/Page column 93
(2016/12/12)
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- pyrazole derivative and organoelectroluminescent device employing the same
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The present invention relates to a pyrazole derivative and an organic electroluminescent element using the same. The organic electroluminescent element using the pyrazole derivative in the present invention has greater light-emitting efficiency and long life by driving at lower voltage. More specifically, the pyrazole derivative of the present invention can be used in electro elements through the process of deposition and solution and used as light-emitting materials such as phosphorescent hosts in manufacturing organic electroluminescent elements with high heat stability, crystal stability, solubility for an organic solvent, excellent thin film forming function in a solution phase and energy transfer and compatibility with metal-ligand.
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Paragraph 0109; 0110; 0111
(2016/10/24)
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- Phenylpyrazole derivatives and organoelectroluminescent device employing the same
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The present invention refers to phenyl ethanolamine derivatives the VCSEL relates to quality of organic electro-luminescent device, employing derivatives ethanolamine phenyl of the present invention quality of organic electro-luminescent device a highly e
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Paragraph 0107-1110
(2016/10/09)
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- METAL COMPLEXES COMPRISING DIAZABENZIMIDAZOLOCARBENE LIGANDS AND THE USE THEREOF IN OLEDS
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The present invention relates to metal-carbene complexes comprising a central atom selected from iridium and platinum, and diazabenzimidazolocarbene ligands, to organic light diodes which comprise such complexes, to light-emitting layers comprising at lea
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Paragraph 0561
(2013/03/26)
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