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High-performance sky-blue phosphorescent organic light-emitting diodes employing wide-bandgap bipolar host materials with thermally activated delayed fluorescence characteristics
Up to date, several kinds of thermally activated delayed fluorescence (TADF) host molecules have been rapidly developed to fulfill the increasing demand of high-efficiency phosphorescent organic light-emitting diodes (PHOLEDs). Herein, three wide-bandgap TADF materials BPCN-Cz2Ph, BPCN-2Cz, and BPCN-3Cz are newly designed and synthesized as host materials for sky-blue PHOLEDs. By modulation of carbazole-units in the molecular skeleton, we find that the optimized molecules can realize both high triplet energies and balanced carrier transport properties with obvious TADF properties. The sky-blue PHOLEDs with ultralow phosphor doping ratio employing BPCN-Cz2Ph, BPCN-2Cz, and BPCN-3Cz as host materials demonstrate really high performance with alleviated roll-offs and achieve impressive current efficiencies (CEs) of 46.5 cd A?1, 50.0 cd A?1, and 34.5 cd A?1, power efficiencies (PEs) of 40.6 lm W?1, 46.8 lm W?1, and 34.8 lm W?1, and external quantum efficiencies (EQEs) of 22.2%, 24%, and 15.8%, respectively. More encouragingly, even at an applied luminance of 1000 cd m?2, the EQEs could maintain high levels of 21.0%, 21.5% and 12.8%, respectively, which represents the potential utility value of the new family of these molecules in blue PHOLEDs. Our molecular design strategy provides a practical way to construct promising wide-bandgap TADF host materials with an excellent combination of TADF property, high triplet energy, and balanced carrier-transporting ability for high-performance devices.
Zhang, Yuan-Lan,Ran, Quan,Wang, Qiang,Tian, Qi-Sheng,Kong, Fan-Cheng,Fan, Jian,Liao, Liang-Sheng
(2020)
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Heterocyclic compound and organic electroluminescent device thereof
The invention provides a heterocyclic compound and an organic electroluminescent device thereof. Relates to the technical field of organic photoelectric materials. In order to solve the problem that the light extraction efficiency caused by total reflecti
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Paragraph 0125; 0131-0132

(2021/10/05)

Organic compound taking carbazole as core as well as preparation method and application thereof
The invention relates to an organic compound taking carbazole as a core as well as a preparation method and application thereof, and belongs to the technical field of semiconductors, and the compoundhas a structure as shown in a general formula (1). The i
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(2020/06/20)

1,Ω - bis (3, 6 - diarylcarbazole)-alkane and preparation method thereof
The invention relates to 1,omega-bis(3,6-diaryl carbazolyl)-alkane. The 1,omega-bis(3,6-diaryl carbazolyl)-alkane is of a structure (described in the specification), wherein Ar is phenyl, p-methylphenyl, alpha naphthyl or beta naphthyl; and R is ethyl, pr
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Paragraph 0030-0040; 0133; 0134; 0201; 0202

(2020/07/24)

COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND A ELECTRONIC DEVICE THEREOF
The present invention relates to a novel compound, an organic electric element using the same, and an electronic device thereof. According to the present invention, a luminous efficiency, a color purity and a lifespan of the element can be improved and a driving voltage can be lowered. The organic electric element comprises: an anode; a cathode; and an organic material layer formed between the anode and the cathode.
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(2020/05/30)

Visible light delayed fluorescence material containing pyridinotriazole and derivative receptor structural units, and application thereof
The invention provides an organic delayed fluorescence luminescent material based on a pyridinotriazole and pyridinotriazole derivative receptor structure, and application thereof. The organic luminescent material is a receptor-donor separation system, wh
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Paragraph 0067-0069

(2020/09/23)

Synthesis of N-Alkyl and N-H-Carbazoles through SNAr-Based Aminations of Dibenzothiophene Dioxides
Alkyl amines have become available for the synthesis of diverse N-alkyl carbazoles through twofold SNAr aminations of dibenzothiophene dioxides by using alkali metal bases. Of particular importance is the choice of counter cations on alkali metal bases, that is, i) the use of Li base for the efficient intermolecular reaction and ii) the sequential addition of heavier alkali metal bases (Na, K, or Cs) to promote intramolecular cyclization in a one-pot manner. This protocol also enables the cascade synthesis of N-H-carbazoles by using 2-phenylethylamine by removal of the 2-phenethyl group from N-(2-phenethyl) carbazoles in a single operation.
Kaga, Atsushi,Nogi, Keisuke,Yorimitsu, Hideki
supporting information
p. 14780 - 14784
(2019/11/13)

Carbazole derivatives and application of carbazole derivatives in electroluminescent device
The invention discloses carbazole derivatives represented by formulas (1)-(3), and also discloses application of the carbazole derivatives as a host material in an OLED organic light-emitting layer orapplication of the carbazole derivatives in preparation of an electroluminescent device. The carbazole derivatives have a high triplet state, exhibits bipolar transport properties at the same time, and has high carrier mobility, matching of electron holes is more balanced, and exciton formation is facilitated; and when the carbazole derivatives are applied to the organic electroluminescent blue-light device, excellent performance, low voltage and high efficiency are achieved.
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Paragraph 0056-0058

(2019/11/28)

COMPOUND, THIN FILM COMPRISING THE COMPOUND AND MENUFACTURING METHOD OF THE THIN FILM, AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE COMPOUND
In a compound, a thin film comprising the same, a method for manufacturing the thin film, and an organic light emitting device comprising the compound of the present invention, the compound of the present invention is represented by chemical formula 1. In the chemical formula 1, each of X_1, X_2, X_3, and X_4 independently represents hydrogen (H), aryl, diarylamine, or tert-butyl. A purpose of the present invention to provide the compound which contains a styrene group at the terminal thereof, has excellent solubility, and can be thermally cured at a low temperature.COPYRIGHT KIPO 2019
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Paragraph 0092-0096

(2019/06/11)

Aggregation-induced emission (AIE)-active highly emissive novel carbazole-based dyes with various solid-state fluorescence and reversible mechanofluorochromism characteristics
Three new carbazole-based fluorescent molecules 1–3 functionalized with tetraphenylethene have been successfully synthesized, and these compounds have high thermal stability, and they exhibited different fluorescence in solid states with the superior lumi
Zhao, Fei,Chen, Zhao,Fan, Congbin,Liu, Gang,Pu, Shouzhi
p. 390 - 397
(2019/02/12)

ORGANIC ELECTROLUMINESCENT DEVICE
The present invention relates to organic electroluminescent devices which comprise mixtures of at least two electron-conducting materials, in particu-lar as matrix for phosphorescent emitters.
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Page/Page column 47

(2019/01/17)

Studies on the Enantioselective Iminium Ion Trapping of Radicals Triggered by an Electron-Relay Mechanism
A combination of electrochemical, spectroscopic, computational, and kinetic studies has been used to elucidate the key mechanistic aspects of the previously reported enantioselective iminium ion trapping of photochemically generated carbon-centered radicals. The process, which provides a direct way to forge quaternary stereocenters with high fidelity, relies on the interplay of two distinct catalytic cycles: the aminocatalytic electron-relay system, which triggers the stereoselective radical trap upon iminium ion formation, and the photoredox cycle, which generates radicals under mild conditions. Critical to reaction development was the use of a chiral amine catalyst, bearing a redox-active carbazole unit, which could rapidly reduce the highly reactive and unstable intermediate generated upon radical interception. The carbazole unit, however, is also involved in another step of the electron-relay mechanism: the transiently generated carbazole radical cation acts as an oxidant to return the photocatalyst into the original state. By means of kinetic and spectroscopic studies, we have identified the last redox event as being the turnover-limiting step of the overall process. This mechanistic framework is corroborated by the linear correlation between the reaction rate and the reduction potential of the carbazole unit tethered to the aminocatalyst. The redox properties of the carbazole unit can thus be rationally tuned to improve catalytic activity. This knowledge may open a path for the mechanistically driven design of the next generation of electron-relay catalysts.
Bahamonde, Ana,Murphy, John J.,Savarese, Marika,Brémond, éric,Cavalli, Andrea,Melchiorre, Paolo
p. 4559 - 4567
(2017/04/04)

Containing the substituted or non-substituted carbazolyl -6 are three a phenyl -6H-6- boron mixed benzene and [cd] pyrenebutyric derivative and its preparation method and application and the light-emitting device containing the same
The invention provides a 6-mesitylene-6H-6-boron hetero benzo[cd]pyrene derivative containing substituted or non-substituted carbazolyl. Due to the bipolar transmission characteristic, the derivative can effectively balance transmission of carriers and improve transmission efficiency, by using the derivative in phosphorescent organic light-emitting devices as a main material. The invention also provides an organic electroluminescent device that has increased current efficiency, reduced turn-on voltage and good stability, and solves the problems of low transmission efficiency or poor stability of phosphorescent organic light-emitting main materials in the prior art.
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Paragraph 0115; 0242

(2016/10/07)

ORGANIC ELECTROLUMINESCENCE ELEMENT, AND MATERIAL FOR ORGANIC ELECTROLUMINESCENCE ELEMENT
An organic electroluminescence device according to an aspect of the invention includes: a cathode; an anode; and an organic thin-film layer disposed between the cathode and the anode, the organic thin-film layer having one or more layers including an emitting layer, in which the emitting layer includes a first material represented by the following formula (1) and a second material in a form of a fluorescent dopant material.
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Page/Page column 89

(2017/03/08)

Organic electroluminescence device
An organic EL device includes a pair of electrodes and an organic compound layer between pair of electrodes. The organic compound layer includes an emitting layer including a first material and a second material. The second material is a fluorescent mater
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Page/Page column 41; 42

(2017/03/17)

A light emitting device for emitting compd. (by machine translation)
The invention discloses a, R 2 is, optionally substituted phenyl, the substituent Alkoxypyrimidinyl and optionally can be from Pirimidinyl substd., cyano, aryl and/or has heteroaryloxazolidinone; R 3 is, optionally substituted carbosorylethyl, optionally substituted dihydrobenzo carbosorylethyl, optionally [...] substd., optionally [...] substd. phenazinyl and optionally can be substituted with from, heteroaryl, compound represented by eq. 1. In another embodiment, the organic light emitting diode device including a compound of eq. 1. Selected drawing: fig. 1 (by machine translation)
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Paragraph 0104; 0123

(2016/10/20)

Carbazole derivative, and preparation method and organic electroluminescent device thereof
The invention provides a carbazole derivative, and a preparation method and an organic electroluminescent device thereof. The carbazole derivative is characterized in that a substituent group is improved based on an asymmetric carbazole derivative in orde
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Paragraph 0139; 0140; 0141; 0142; 0143; 0144

(2016/10/10)

ELECTROACTIVE MATERIALS
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Page/Page column

(2015/08/06)

Hole Transport Materials with High Triplet Energy for Long Lifespan OLED and OLED Containing the Same
According to the present invention, hole transport materials induce a substituent which turns an orientation angle to two phenylene groups of a biphenyldiamine partial structure, and an aryl group to two nitrogen atoms of the biphenyldiamine partial structure, thereby improving light emitting properties such as low driving voltage and high light emitting efficiency, and increasing thermal stability by raising rotational energy barrier of molecules and lifespan of a diode. The hole transport material is a biphenyldiamine derivative represented by chemical formula 1. Accordingly, the present invention can manufacture an organic light emitting diode (OLED) of high efficiency, low voltage, high brightness, and long lifespan by using the same.COPYRIGHT KIPO 2015
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Paragraph 0146-0149

(2016/12/01)

COMPOUND, ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
The present invention relates to a compound represented by chemical formula I, an organic light emitting diode including the same, and a display device including the organic light emitting diode. Accordingly, the present invention can provide the organic light emitting diode having properties such as high efficiency and long lifetime. In chemical formula I, X^1 to X^10, L^1 to L^3, R^5 to R^7, X, Ar^1, p, and q are the same as defined in the specification.COPYRIGHT KIPO 2015
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Paragraph 0362-0364

(2016/10/10)

COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
The present invention provides a novel compound capable of improving light-emitting efficiency, stability, and lifespan of an element, an organic electronic element using same and an electronic device thereof.(110) Substrate(120) Positive electrode(130) Hole injection layer(140) Hole transfer layer(141) Buffer layer(150) Light emitting layer(151) Light-emitting assisting layer(160) Electron transfer layer(170) Electron injection layer(180) Negative electrodeCOPYRIGHT KIPO 2016
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Paragraph 0158; 0159; 0160

(2016/10/07)

EMISSIVE MATERIAL FOR ORGANIC EMITTING DIODES
Compounds represented by Formula 1 are described herein. Organic light-emitting elements and an organic light-emitting diode devices including these compounds, as well as methods related to preparing these compounds and devices, are also included in this disclosure.
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Paragraph 0060

(2016/06/01)

COMPOUND FOR ORGANIC OPTOELECTRIC DEVICE, ORGANIC LIGHT-EMITTING DIODE INCLUDING SAME, AND DISPLAY DEVICE INCLUDING ORGANIC LIGHT-EMITTING DIODE
A compound for an organic optoelectronic device, an organic light emitting diode including the same, and a display device including the organic light emitting diode are disclosed and the compound for an organic optoelectronic device represented by a combination of the following Chemical Formulae 1 and 2 provides an organic light emitting diode having life-span characteristics due to excellent electrochemical and thermal stability, and high luminous efficiency at a low driving voltage.
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Paragraph 0168-0171

(2015/07/15)

Host materials for pholeds
The present disclosure generally relates to novel compounds containing carbazole and triazine with different number of phenyl units attached to its core. In particular, the disclosure relates to compositions and/or devices comprising these compounds as ho
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Paragraph 0102; 0103

(2015/01/18)

GREEN LUMINESCENT MATERIALS
There is provided a compound having Formula I In the formula: R1 can be aryl, alkyl, silyl, or deuterated analogs thereof; R2 can be aryl, alkyl, silyl, or deuterated analogs thereof; R3 can be H, D, alkyl, silyl, deuterat
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Paragraph 28; 29

(2013/10/08)

Synthesis and properties of diphenylcarbazole triphenylethylene derivatives with aggregation-induced emission, blue light emission and high thermal stability
New aggregation-induced emission materials derived from diphenylcarbazole triphenylethylene were prepared. The thermal, photophysical, electrochemical and aggregation-induced emissive properties were investigated. All the compounds had strong blue light e
Xu, Bing-Jia,Chi, Zhen-Guo,Li, Xiao-Fang,Li, Hai-Yin,Zhou, Wei,Zhang, Xi-Qi,Wang, Cheng-Cheng,Zhang, Yi,Liu, Si-Wei,Xu, Jia-Rui
p. 433 - 441
(2012/05/04)

NAPHTHYL CARBAZOLE DERIVATIVES, KL HOST MATERIAL, THE ORGANIC LIGHT EMITTING DEVICE EMPLOYING THE SAME, THE DISPLAY DEVICE AND THE ILLUMINATION DEVICE EMPLOYING THE SAME
Naphthylcarbazole derivatives are provided. The naphthylcarbazole derivatives are represented by Formula 1. Further provided are KL host materials, organic electroluminescent devices employing the host materials, and displays and lighting systems comprising the devices.
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(2010/07/04)

POLYCYCLIC COMPOUNDS FOR ELECTRONIC APPLICATIONS
The present invention relates to electronic devices, especially electroluminescent devices, comprising compounds of formula (I), and/or (II), especially as host for phosphorescent emitters, electron transporting materials, or emitter materials. The hosts
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Page/Page column 55

(2010/05/13)

Enantioselective synthesis of butadien-2-ylcarbinols via (silylmethyl)allenic alcohols from chromium-catalyzed additions to aldehydes utilizing chiral carbazole ligands
The synthesis of chiral, nonracemic butadienylcarbinols by employing intermediate (trimethylsilyl)methylallenic alcohols is described. Allenic alcohols are obtained by treatment of aldehydes with (4-bromobut-2-ynyl) trimethylsilane in the presence of a ca
Durán-Galván, María,Worlikar, Shilpa A.,Connell, Brian T.
scheme or table
p. 7707 - 7719
(2010/10/21)

NAPHTHYL CARBAZOLE DERIVATIVES, KL HOST MATERIAL, THE ORGANIC LIGHT EMITTING DEVICE EMPLOYING THE SAME, THE DISPLAY DEVICE AND THE ILLUMINATION DEVICE EMPLOYING THE SAME
Naphthylcarbazole derivatives are provided. The naphthylcarbazole derivatives are represented by Formula 1. Further provided are KL host materials, organic electroluminescent devices employing the host materials, and displays and lighting systems comprising the devices.
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Page/Page column 29

(2008/12/04)

Quinoxaline derivative, and light-emitting device, electronic device using the quinoxaline derivative
The present invention provides a novel organic compound having excellent heat resistance. By using the novel organic compound, a light-emitting device and an electronic device having excellent heat resistance can be provided. A quinoxaline derivative repr
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Page/Page column 36

(2008/06/13)

ORGANIC COMPOUND, CHARGE-TRANSPORTING MATERIAL, AND ORGANIC ELECTROLUMINESCENT ELEMENT
An organic compound and a charge-transporting material which are excellent in both a hole-transporting property and an electron-transporting property and have excellent electrical oxidation/reduction durability and a high triplet excitation level are provided, and an organic electroluminescent device which uses this organic compound and has high luminous efficiency and high driving stability and long lifetime is provided. One molecule of the organic compound has two or more partial structures represented by the following Formula (I): wherein Cz denotes a carbazolyl group; Z denotes a direct link or an optional linking group; N atoms present in one molecule do not conjugate with each other excepting between N atoms in the same B1 rings; one molecule contains only one pyridine ring; one molecule contains a plurality of Q's; and Q denotes a direct link connected to G present in a moiety represented by the following Formula (II): wherein B1 ring is a six-membered aromatic heterocycle containing n N atoms as a hetero atom; n is an integer of 1 to 3; when G is linked to Q, the G denotes a direct link or an optional linking group which links to Q; when G is not linked to Q, the G denotes an aromatic hydrocarbon group; G's are bound to C atoms in ortho-position and para-position with respect to the N atom in B1 ring; and m is an integer of 3 to 5.
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Page/Page column 89

(2008/06/13)

New preparation of tridentate bis-oxazoline carbazole ligand effective for enantioselective nozaki-hiyama reaction
A new preparation of the tridentate bis-oxazoline carbazole ligand 1 is described. This method features direct formation of the amide, which is a precursor of the ligand l, via the Pd-catalyzed amidation and following BF3 · OEt2 medi
Inoue, Masahiro,Nakada, Masahisa
p. 133 - 138
(2008/02/13)

ANTHRACENE DERIVATIVE, MATERIAL FOR LIGHT EMITTING ELEMENT, LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE, AND ELECTRONIC DEVICE
It is an object of the present invention to provide a novel material capable of realizing excellent color purity of blue, and a light emitting element and a light emitting device using the novel material. Further, it is an object of the present invention to provide which is highly reliable, and a light emitting element and a light emitting device using the novel material. The structure for solving the above problems in accordance with the present invention is an anthracene derivative simultaneously having a diphenylanthracene structure and a carbazole skeleton in a molecule as represented by structural formula (1).
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Page/Page column 63-64

(2008/06/13)

3, 6-Diphenylcarbazole compound and organic electroluminescent device
A 3,6-diphenylcarbazole compound, which has a specific formula and realizes an organic electroluminescent device having high durability and high luminous efficiency. An electroluminescent device which includes an anode; a cathode which faces the anode; an
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(2008/06/13)

Carbazole compounds
A carbazole wherein R1, R2, R3, and R4are independently a hydrocarbyl, and wherein Ar is an aryl.
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(2008/06/13)

Electroluminescent devices
An electroluminescent device including a first electrode, a second electrode, and situated between the electrodes a carbazole layer of the formula wherein R1, R2, R3, and R4are independently selected from the gr
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Page column 27

(2008/06/13)

Asymmetric catalysis of Nozaki-Hiyama allylation and methallylation with a new tridentate bis(oxazolinyl)carbazole ligand
This work describes the development of a new tridentate ligand effective for the asymmetric catalysis of Nozaki-Hiyama allylation and methallylation. Various aldehydes were allylated or methallylated with good enantioselectivity (86-96%), and a key interm
Inoue, Masahiro,Suzuki, Takahiro,Nakada, Masahisa
p. 1140 - 1141
(2007/10/03)

9-(Piperazinylalkyl)carbazoles as Bax-modulators
The present invention is related to piperazine derivatives of carbazole notably for use as pharmaceutically active compounds, as well as to pharmaceutical formulations containing such piperazine derivatives of carbazole. Said piperazine derivatives of car
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(2008/06/13)