- Deep blue organic light-emitting devices enabled by bipolar phenanthro[9,10-d]imidazole derivatives
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Two blue fluorescent phenanthroimidazole derivatives (PhImFD and PhImTD) with a D-π-A structure are synthesized by attaching a hole-transporting dibenzofuran or dibenzothiophene and an electron-transporting phenanthroimidazole moiety and characterized. The nonplanar twisted structures reduce molecular aggregation, which endows both of the compounds with good thermal properties, and film-forming abilities as well as high quantum yields in CH2Cl2 and in the solid state. Non-doped organic light emitting diodes (OLEDs) are fabricated by employing the compounds PhImFD and PhImTD as emitters and exhibited promising performances. The devices show a deep blue emission with Commission Internationale de l'Eclairage (CIE) coordinates of (0.15, 0.11) for PhImFD and (0.15, 0.10) for PhImTD. PhImFD and PhImTD, with the desired bipolar-dominant characteristics, render devices with a low driving voltage of 3.6 V. The energy levels of the materials were found to be related to the donor units in the compounds with different substituents. Device B, using PhImTD as the emitting layer (EML), with well fitting energy levels and increased electron transport ability, possesses favorable efficiencies of 1.34 cd m-2 for CE, 0.82 lm W-1 for PE and 1.63% for EQE. PhImFD and PhImTD are utilized as blue emitters and the host for a yellow emitter, PO-01, to fabricate white organic light-emitting diodes (WOLEDs) that give a forward-viewing maximum CE of 8.12 cd m-2 and CIE coordinates of (0.339, 0.330). The results demonstrated not only that the phenanthroimidazole unit is an excellent building block to construct deep blue emission materials, but also that chemical structure modification by the introduction of a suitable electron-donor substituent could influence the performance of devices.
- Chen, Shuo,Wu, Yukun,Zhao, Yi,Fang, Daining
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- Copper-Catalyzed Monoorganylation of Trialkyl Borates with Functionalized Organozinc Pivalates
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Organozinc pivalates, a recently developed air- and moisture-stable organozinc species, were found for the first time as excellent organometallic species in the monoorganylation of trialkyl borates whereby boronic acids were prepared in high yields. The significant advantage of organozinc pivalates over another previously employed organometallic reagents, e. g., organolithium reagents, Grignard reagents and organozinc halides, is that the generation of multiorganylation byproducts such as borinic acids and trialkylboranes were completely suppressed. Additionally, the in situ generated boronates could be directly arranged into Suzuki-Miyaura type cross-coupling reactions to produce biaryls in high yields.
- Fu, Ying,Gou, Bei-Lei,Shi, Chun-Zhao,Du, Zhengyin,Shen, Tong
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- Aromatic compound and organoelectroluminescent device comprising the compound
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The present invention relates to an aromatic compound and an organic electroluminescent device including the same. The aromatic compound is represented by chemical formula 1, and the organic electroluminescent device is excellent in driving voltage, luminous efficiency and lifetime characteristics.
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Paragraph 0740-0746
(2021/08/31)
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- Compound, electronic element and electronic device
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The invention provides a compound, an electronic component and an electronic device, and relates to the technical field of organic materials, wherein the compound is represented by a formula I, X1, X2and X3 are the same or different and are respectively and independently selected from carbon and nitrogen, X1, X2 and X3 are not carbon at the same time, L is selected from a single bond, arylene, heteroarylene, aryl alkylene and heteroaryl alkylene, Ar1 is selected from alkyl, cycloalkyl, aryl, heteroaryl, alkoxy, alkylamino, arylamino and arylalkylamino, and Ar2 and Ar3 are the same or different and are respectively and independently selected from cycloalkyl, aryl, heteroaryl, alkoxy, alkylamino, arylamino and arylalkylamino. The compound provided by the invention can reduce the working voltage of an electronic component, improve the luminous efficiency of the electronic component and prolong the service life of a device.
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- Synthesis method of dibenzofuran/thiophene-4-boric acid
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The invention discloses a synthesis method of dibenzofuran/thiophene-4-boric acid, and belongs to the field of heterocyclic boric acid synthesis in organic chemistry. The synthesis method comprises the following steps: adding dibenzofuran or dibenzothioph
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Paragraph 0017
(2019/03/28)
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- Terpyridine derivative and preparation method and application thereof as well as device
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The invention belongs to the field of application science and technology of organic photoelectric materials, and particularly relates to a terpyridine derivative and a preparation method and application thereof as well as a device. The derivative provided by the invention is characterized by being mainly based on a terpyridine core, peripherally using a carbazole derivative and the like to regulate appropriate electron donating ability, and transforming different bridging groups through a D-A structure design to regulate the appropriate distribution of highest occupied molecular orbital (HOMO)and lowest unoccupied molecular orbital (LUMO); the derivative is mainly applied to TADF guest materials, host materials and carrier transport materials.
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Paragraph 0063-0066
(2019/07/04)
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- Fused cyclic compound and organoelectroluminescent device comprising the compound
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PURPOSE: A condensed cyclic compound is provided to drive an organic electroluminescent device at low voltage and to improve brightness and economic efficiency. CONSTITUTION: A condensed cyclic compound is denoted by chemical formula 1. An organic electroluminescence device comprises an anode, a cathode, and a layer containing the condensed cyclic compounds, placed between the anode and the cathode. A light emitting layer between the anode and the cathode contains the condensed cyclic compounds. The organic electroluminescent device further comprises one or more layers selected among a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.
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Paragraph 0105; 0124-0130
(2019/08/30)
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- A iridium complex and its organic light-emitting device (by machine translation)
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The invention discloses a metal iridium complex and its organic light-emitting device, relates to organic photoelectric material technical field. We will have the kind of cabeen structure of guanidine groups and bases as the auxiliary ligand is introduced
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Paragraph 0085-0088
(2019/01/08)
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- A pyrimidine derivatives and application thereof (by machine translation)
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The invention discloses a pyrimidine derivative and its application, the pyrimidine derivatives having the following -like type (I) indicated by the structure; wherein said R1 , R2 , R3 Are selected from the carbon atom number is 1 - 60 alkyl, substituted and non-substituted aromatic heterocyclic radical, and substituted and non-substituted aromatic ring in base of any one group. The invention through the pyrimidine derivatives key chemical structure and the like is improved, and the pyrimidine derivatives as material is applied to the electro-luminescent layer in the organic electroluminescent device, compared with the prior art can effectively solve the organic electroluminescent device in blue light material of poor stability, low efficiency and the like. (by machine translation)
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Paragraph 0035; 0037; 0040; 0041
(2018/07/30)
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- NOVEL TRIAZINE COMPOUND, AND ORGANIC ELECTRONIC ELEMENT AND PLANT-GROWING LIGHTING THAT USE THE SAME
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PROBLEM TO BE SOLVED: To provide a triazine compound which has a high triplet energy level and excellent heat resistance, and can be used as an organic electronic element material realizing an element with high efficiency, low voltage and a long life. SOLUTION: In the triazine compound, as represented by the general formula [1] in the figure, a triazine backbone moiety is linked to a dibenzofuran or dibenzothiophene backbone moiety via a biphenyl backbone moiety, where X is an oxygen atom or sulfur atom. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPO&INPIT
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Paragraph 0073
(2018/07/28)
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- NOVEL ORGANIC COMPOUND, MATERIAL COMPRISING THE SAME FOR ORGANIC ELECTROLUMINESCENCE DEVICES, AND ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE MATERIAL
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The present invention provides a novel organic compound of General Formula 1, a material comprising the same for organic electroluminescence devices, and an organic electroluminescence device comprising the material. The organic compound of the present invention is useful in organic electroluminescence devices as a hole injection layer substance, a hole transport layer substance, an electron blocking layer substance, and an emission layer substance such as green and red phosphorescent host substance, and when used in the organic electroluminescence devices, can reduce the drive voltage, and increase the luminous efficiency, luminance, thermal stability, color purity and service life of the devices.
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- NOVEL ORGANIC COMPOUND, MATERIAL COMPRISING THE SAME FOR ORGANIC ELECTROLUMINESCENCE DEVICES, AND ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE MATERIAL
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The present invention provides a novel organic compound, a material comprising the same for organic electroluminescence devices, and an organic electroluminescence device comprising the material. The organic compound provided in the present invention is useful in organic electroluminescence devices as a hole injection layer material, a hole transport layer material, an electron blocking layer material, and an emission layer material such as green and red phosphorescent host material, and can reduce the drive voltage, and increase the luminous efficiency, luminance, thermal stability, color purity and service life of the devices.
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- Novel heterocyclic compounds and organic light-emitting diode including the same
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The present invention relates to a novel heterocyclic compound having long lifespan properties, low voltage driving properties, and excellent light emitting efficiency, and an organic light emitting device comprising the same and, more specifically, to an organic light emitting compound represented by any one selected from chemical formula A and chemical formula B, and an organic light emitting device comprising the same. In chemical formulas, each substituent of A1 to A4, Randprime;, Randprime;andprime;, X, Y, and Z, and n are the same as defined in the detailed description of the invention.COPYRIGHT KIPO 2016
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Paragraph 0615-0620
(2016/10/10)
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- Compound containing anthracene and pyrene and preparing method and application thereof
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The invention provides a compound containing anthracene and pyrene and a preparing method and application thereof. The compound has a structure shown in formula I, wherein R1 and R3 are independently selected from substituted or unsubstituted C1-C60 alkyl groups, substituted or unsubstituted C6-C60 aryl groups, substituted or unsubstituted C10-C60 condensed ring groups or substituted or unsubstituted C5-C60 heterocyclic groups; R2 is selected from hydrogen, substituted or unsubstituted C6-C60 aryl groups, substituted or unsubstituted C5-C60 heterocyclic groups, substituted or unsubstituted C10-C60 condensed ring groups or substituted or unsubstituted C5-C60 arylamine groups; n is 0 or 1. When current density is 20 mA/cm2, the current efficiency of the compound with the structure shown in formula I is as high as 8.9 cd/A, and service life is as long as 8500 h which is much longer than that of existing electroluminescent materials.
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Paragraph 0147-0153
(2017/02/24)
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- A including anthracene apperception compound and its preparation method and an organic light emitting device (by machine translation)
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The invention provides a including anthracene apperception compound, of formula (I) as shown in the structure. The invention by modifying the structure of the anthracene compound, so that the formula (I) indicated by the anthracene compound of the organic
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Paragraph 0150; 0151; 0152; 0153; 0156
(2017/04/22)
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- Hole transport material for organic electroluminescence device and organic electroluminescence device using the same
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A hole transport material for the organic electroluminescence device, the hole transport material being represented by the following Formula 1,
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Page/Page column 17
(2015/11/09)
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- FLUORANTHENE COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
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A fluoranthene compound represented by the formula (1): wherein Z7 and Z12 are each aryl or heteroaryl; Ar0 is a single bond, aryl, or heteroaryl; R1 to R4 and R6 to R9 are each independently a hydrogen atom, alkyl, cycloalkyl, aryl, heteroaryl, or the like; and I is an integer of 1 to 4.
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Page/Page column 23-24
(2012/09/21)
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