86-76-0Relevant articles and documents
Triphenylene-based host materials for low-voltage, highly efficient red phosphorescent organic light-emitting diodes
Togashi, Kazunori,Yasuda, Takuma,Adachi, Chihaya
, p. 383 - 385 (2013)
Triphenylene-based host materials BDBF-TP and BDBT-TP were synthesized for use in red phosphorescent organic lightemitting diodes (PHOLEDs). The currentvoltage characteristics of hole- and electron-only devices revealed that BDBT-TP exhibits better bipolar carrier transport properties than 4,4'- bis(carbazol-9-yl)-1,1'-biphenyl and BDBF-TP. Red PHOLEDs containing BDBF-TP or BDBT-TP as the host showed a lower driving voltage, higher external quantum efficiency, and lower efficiency roll-off at high current density.
COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT COMPRISING THE SAME AND ELECTRONIC DEVICE THEREOF
-
Paragraph 0263-0267; 0288-0289; 0291, (2020/04/30)
The present invention relates to: a compound for an organic electric element; the organic electric element using the same; and an electronic device thereof. According to the present invention, it is possible to achieve high luminous efficiency, low driving voltage, and high heat resistance of an element, and to improve color purity and lifespan of the element. By using the compound according to the present invention, it is possible to achieve high luminous efficiency, low driving voltage, and high heat resistance of the element, and to provide an effect of improving color purity and lifespan of the element.(110) Substrate(120) Positive electrode(130) Hole injection layer(140) Hole transfer layer(141) Buffer layer(150) Light emitting layer(151) Light emitting auxiliary layer(160) Electron transfer layer(170) Electron injection layer(180) Negative electrodeCOPYRIGHT KIPO 2020
Synthesis of Dibenzofurans by Cu-Catalyzed Deborylative Ring Contraction of Dibenzoxaborins
Sumida, Yuto,Harada, Ryu,Sumida, Tomoe,Johmoto, Kohei,Uekusa, Hidehiro,Hosoya, Takamitsu
, p. 6687 - 6691 (2020/09/02)
An efficient transformation of dibenzoxaborins to dibenzofurans by deborylative ring contraction was achieved under mild conditions using a copper catalyst. The method showed a broad substrate scope enabling the preparation of various dibenzofurans, including those bearing a functional group. The ready availability of various dibenzoxaborins enhances the utility of this method, as demonstrated by the regiodivergent synthesis of dibenzofurans.
Nitrogen-containing compound, electronic element and electronic device
-
Paragraph 0078; 0079, (2020/05/01)
The invention provides a nitrogen-containing compound, an electronic component and an electronic device, and relates to the technical field of organic materials, wherein the nitrogen-containing compound is represented by a formula I, X is selected from oxygen and sulfur, R is selected from heterocycloalkyl and heteroaryl, L is selected from a single bond, arylene and heteroarylene, the substituentof R is selected from deuterium, nitro, hydroxyl, alkyl, cycloalkyl, alkenyl, alkynyl, aryl, heteroaryl, heterocycloalkyl, alkoxy, aryl silyl and alkyl silyl, and the substituent of L is selected from deuterium, nitro, hydroxyl, alkyl, cycloalkyl, alkenyl, alkynyl, heterocycloalkyl, alkoxy, alkylsilyl, arylsilyl, aryloxy and arylthio. The nitrogen-containing compound disclosed by the invention can reduce the working voltage of an electronic component, improve the efficiency of a device and prolong the service life of the device.
Method for preparing 2-bromodibenzofuran in environmental protection way
-
Paragraph 0027-0030, (2019/04/02)
The invention discloses a method for preparing 2-bromodibenzofuran in an environmental protection way. The method comprises the steps of adding hydrogen peroxide into a mixing system formed by a dichloroethane solution of dibenzofuran and a water solution of hydrobromic acid, stirring for reaction to obtain the 2-bromodibenzofuran. Compared with an existing preparation method of the 2-bromodibenzofuran, according to the method provided by the invention, bromine can be fully utilized, so that the waste of the bromine and the production of a large number of acid waste liquid are avoided, the environment pollution is reduced, and the method is simple in operation and low in cost.
Compound containing aza-5-membered ring and application thereof in organic electroluminescent devices
-
Paragraph 0058; 0060; 0061; 0074; 0075, (2019/12/25)
The invention discloses a compound containing an aza-5-membered ring and an application thereof in organic electroluminescent devices. The compound is composed of the aza-5-membered ring, has deep HOMO energy level and high hole mobility rate, and is suitable for electronic barrier materials. In addition, the compound has strong group rigidity, has molecules difficult to crystallize and gather, and has good film-forming property. After the compound as an organic electroluminescent functional layer material is applied in OLED devices, the current efficiency, power efficiency and external quantum efficiency of the devices are greatly improved, and the lifetime of the devices is significantly prolonged.
Ni-Catalyzed Reductive Cyanation of Aryl Halides and Phenol Derivatives via Transnitrilation
Mills, L. Reginald,Graham, Joshua M.,Patel, Purvish,Rousseaux, Sophie A. L.
supporting information, p. 19257 - 19262 (2019/12/02)
Herein, we report a Ni-catalyzed reductive coupling for the synthesis of benzonitriles from aryl (pseudo)halides and an electrophilic cyanating reagent, 2-methyl-2-phenyl malononitrile (MPMN). MPMN is a bench-stable, carbon-bound electrophilic CN reagent that does not release cyanide under the reaction conditions. A variety of medicinally relevant benzonitriles can be made in good yields. Addition of NaBr to the reaction mixture allows for the use of more challenging aryl electrophiles such as aryl chlorides, tosylates, and triflates. Mechanistic investigations suggest that NaBr plays a role in facilitating oxidative addition with these substrates.
NOVEL TRIAZINE COMPOUND, AND ORGANIC ELECTRONIC ELEMENT AND PLANT-GROWING LIGHTING THAT USE THE SAME
-
Paragraph 0075, (2018/07/28)
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
DIBENZOFURAN AND DIBENZOTHIOPHENE DERIVATIVES AND ORGANIC LIGHT-EMITTING DEVICES CONTAINING THEM
-
Page/Page column 35; 36; 37, (2017/09/27)
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.
COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT
-
Paragraph 0144, (2017/05/26)
PROBLEM TO BE SOLVED: To provide a novel compound that is high in band gap and T1 energy, has excellent electrical stability/thermal stability, and can be used also for a hole transport layer of an organic EL element, and to provide an organic EL element that comprises a hole transport layer comprising the compound, and has a longer life and high luminous efficiency. SOLUTION: The present invention provides a compound represented by formula (1) [where X1 to X4 each independently represent H, or a specific dibenzofuran; at least one of X1 to X4 is a specific dibenzofuran; R1 to R6 each independently represent H, a substituted/unsubstituted alkyl group or halogen group; Y is a substituted/unsubstituted an aromatic cyclic group]. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
