- A donor-acceptor-type host material for solution-processed phosphorescent organic light-emitting devices showing high efficiency
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The solution-processable host material, 3,3′-[bis(9-phenyl-carbazol-3-yl)]benzophenone (BCzBP), containing donor-type phenylcarbazole units and an acceptor-type benzophenone unit was synthesized. BCzBP showed a high excited triplet energy level and a high
- Jun, Chang-Hwa,Pu, Yong-Jin,Igarashi, Masahiro,Chiba, Takayuki,Sasabe, Hisahiro,Kido, Junji
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- Aggregation-Induced-Emission-Active Macrocycle Exhibiting Analogous Triply and Singly Twisted M?bius Topologies
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Molecules with M?bius topology have drawn increasing attention from scientists in a variety of fields, such as organic chemistry, inorganic chemistry, and material science. However, synthetic difficulties and the lack of functionality impede their fundame
- Wang, Erjing,He, Zikai,Zhao, Engui,Meng, Luming,Schütt, Christian,Lam, Jacky W.Y.,Sung, Herman H.Y.,Williams, Ian D.,Huang, Xuhui,Herges, Rainer,Tang, Ben Zhong
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Read Online
- Fused ring compound as well as preparation method and application thereof as well as CO-host material Light-emitting composition, light-emitting device, lighting apparatus, and display apparatus
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Disclosed are fused ring compounds having a structure represented by Formula 1 or Formula 2, a method for preparing the same, a co-host material containing the condensed cyclic compound, a light emitting composition, a light emitting device and containing
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- Method for preparing symmetric diarylketone through catalytic oxidative carbonylation
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The invention discloses a method for preparing symmetric diarylketone of a formula (I) as shown in the description. The method comprises the following steps: mixing arylboronic acid (II) (Ar-B(OH)2 (II)), a palladium catalyst, a promoter and an organic solvent in a reactor, introducing air and CO having a volume ratio of (7-19):1, reacting under the conditions of a pressure of 1-6 atm and a temperature of 30-80 DEG C for 8-16 hours, and performing after-treatment on the reaction solution, thereby obtaining the product symmetric diarylketone. According to the method disclosed by the invention,the air directly serves as an oxidizing agent to replace the O2 to be applied to oxidative carbonylation of the arylboronic acid, and the ratio of the air to CO is beyond an explosion limit. Therefore, the catalytic system is safe and economic. The palladium catalyst is small in dosage and simple in separation and can be recycled for several times. The method disclosed by the invention is mild inreaction condition, excellent in substrate suitability and high in yield.
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Paragraph 0023; 0024; 0025; 0026; 0029
(2019/03/08)
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- COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present invention provides a compound represented by chemical formula 1, and an organic light emitting device comprising the same. The compound of the present invention can be used as a material of an organic material layer of an organic light emitting device, and can improve the efficiency, low driving voltage and/or the lifetime characteristic in the organic light emitting device.COPYRIGHT KIPO 2018
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Paragraph 0219-0222
(2019/01/05)
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- COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present specification provides a compound represented by chemical formula 1, and an organic light emitting device comprising the same. The compound of the present specification can be used as a material of an organic material layer of an organic light emitting device, and can improve the efficiency, low driving voltage and/or the lifetime characteristic in the organic light emitting device.COPYRIGHT KIPO 2018
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Paragraph 0308-0312
(2019/01/06)
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- Organic metal compounds and organic light emitting diodes comprising the same
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PURPOSE: An organic metal compound and an organic electroluminescent device containing the same are provided to ensure excellent thermal property and luminescence efficiency, and to be used in a display and a light. CONSTITUTION: An organic metal compound contains a compound of chemical formula 1. An organic electroluminescent device contains the organic metal compound of chemical formula 1. The compound is contained in a light emitting layer between anode and cathode. The organic electroluminescent device comprises one or more layers selected from 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 between the anode and the cathode.
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- Substituted carbazole diphenyl ketone compound and an organic electroluminescence element
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PROBLEM TO BE SOLVED: To provide a novel compound which is a low-molecular material having both of sufficiently high excitation triplet energy and a charge injection-transport property, which is scarcely soluble in an alcoholic solvent, and with which a f
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Sheet 0037-0039
(2017/03/21)
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- Importance of the Anchor Group Position (Para versus Meta) in Tetraphenylmethane Tripods: Synthesis and Self-Assembly Features
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The efficient synthesis of tripodal platforms based on tetraphenylmethane with three acetyl-protected thiol groups in either meta or para positions relative to the central sp3carbon for deposition on Au (111) surfaces is reported. These platfor
- Lindner, Marcin,Valá?ek, Michal,Homberg, Jan,Edelmann, Kevin,Gerhard, Lukas,Wulfhekel, Wulf,Fuhr, Olaf,W?chter, Tobias,Zharnikov, Michael,Kolivo?ka, Viliam,Pospí?il, Lubomír,Mészáros, Gábor,Hromadová, Magdaléna,Mayor, Marcel
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p. 13218 - 13235
(2016/09/09)
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- MATERIALS FOR ELECTRONIC DEVICES
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The present invention relates to a compound, comprising a pyrene skeleton and arylamino groups, according to formula (I). The compound is suitable for use as a functional material in electronic devices.
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Paragraph 0149-0152
(2016/10/09)
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- Construction of efficient blue AIE emitters with triphenylamine and TPE moieties for non-doped OLEDs
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In this paper, by merging the hole-dominated triphenylamine (TPA) and tetraphenylethene (TPE) moieties together with different linkage positions, four derivatives of 1,2-bis[4′-(diphenylamino)biphenyl-4-yl]-1,2- diphenylethene (2TPATPE) were successfully synthesized with confirmed structures, and their thermal, optical and electronic properties were fully investigated. Thanks to the introduction of the meta-linkage mode on the TPE core, their π-conjugation length could be effectively restricted to ensure blue emission. The non-doped OLEDs based on these four emitters exhibit blue emissions from 443-466 nm, largely blue-shifted with respect to the green emission of 2TPATPE (514 nm). Meanwhile, good electroluminescence efficiencies with Lmax, ηC,max, and ηP,max of up to 8160 cd m-2, 3.79 cd A-1, and 2.94 Im W-1 respectively, have also been obtained, further validating our rational design of blue AIE fluorophores. The Royal Society of Chemistry.
- Huang, Jing,Jiang, Yibin,Yang, Jie,Tang, Runli,Xie, Ni,Li, Qianqian,Kwok, Hoi Sing,Tang, Ben Zhong,Li, Zhen
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p. 2028 - 2036
(2014/03/21)
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- INHIBITORS OF CYSTEINE PROTEASES AND METHODS OF USE THEREOF
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The present invention relates to semicarbazone or thiosemicarbazone inhibitors of cysteine proteases and methods of using such compounds to prevent and treat protozoan infections such as trypanosomiasis, malaria and leishmaniasis. The compounds also find use in inhibiting cysteine proteases associated with carcinogenesis, including cathepsins B and L.
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Page/Page column 19
(2009/04/24)
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- Direct nucleophilic fluorination of carbonyl groups of benzophenones and benzils with Deoxofluor
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The carbonyl groups of diaryl ketones and diaryl diketones were directly fluorinated with bis(2-methoxyethyl)aminosulfur trifluoride (Deoxofluor) under neat conditions to give the corresponding gem-difluorides and tetrafluorinated derivatives in moderate
- Chang, Ying,Tewari, Amit,Adi, Avi-Izak,Bae, Chulsung
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p. 9837 - 9842
(2008/12/22)
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- Design, synthesis, and biochemical evaluation of novel cruzain inhibitors with potential application in the treatment of Chagas' disease
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A series of compounds bearing tetrahydronaphthalene, benzophenone, propiophenone, and related rigid molecular skeletons functionalized with thiosemicarbazone or unsaturated carbonyl moieties were prepared by chemical synthesis and evaluated for their ability to inhibit the enzyme cruzain. As potential treatment agents for Chagas' disease, three compounds from the group demonstrate potent inhibition of cruzain with IC50 values of 17, 24, and 80 nM, respectively.
- Siles, Rogelio,Chen, Shen-En,Zhou, Ming,Pinney, Kevin G.,Trawick, Mary Lynn
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p. 4405 - 4409
(2007/10/03)
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- Platinum complex and light-emitting device
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A platinum complex represented by the general formula 1, useful as a phosphorescence emission material, a tetradentate ligand useful for synthesizing the platinum complex, and a light-emitting device containing at least one of the platinum complex. In the
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Page/Page column 34
(2010/11/23)
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- Dications of fluorenylidenes. The relationship between redox potentials and antiaromaticity for meta- and para-substituted diphenylmethylidenefluorenes
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Electrochemical oxidation of meta-substituted diphenylmethylidenefluorenes (3a-g) results in the formation of fluorenylidene dications that are shown to be antiaromatic through calculation of the nucleus independent chemical shift (NICS) for the 5- and 6-
- Mills, Nancy S.,Tirla, Cornelia,Benish, Michele A.,Rakowitz, Amber J.,Bebell, Lisa M.,Hurd, Caroline M. M.,Bria, Anna L. M.
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p. 10709 - 10716
(2007/10/03)
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- Molecules of the TTF and TCNQ Type with Macrocyclic Skeletons
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The electron-rich and electron-poor macrocycles 1 - 3 have been synthesized.Their (3,3')biphenylophane framework is formed by Kharasch reaction.Whereas in the well-known donors and acceptors I - III the functionalities are conjugated, in their macrocyclic "analogues" 1 - 3 the conjugation is prevented by the meta-connection of the phenylene rings.The redox properties - studied by cyclovoltammetry - are discussed.The X-ray analysis of 3 shows considerable deviations from a planar structure.
- Voegtle, Fritz,Alfter, Frank,Nieger, Martin,Steckhan, Eberhard,Mavili, Semra
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p. 897 - 902
(2007/10/02)
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- Use of Potassium Bromate: Bromination of Derivatives of Benzene
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Bromination of various derivatives of benzene using potassium bromate under acidic condition has been discussed.
- Banerjee, Amalendu,Banerjee, Gopal Chandra,Adak, Mohini Mohan,Banerjee, Santa,Samaddar, Haraprasad
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p. 985 - 988
(2007/10/02)
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- Benzophenones and benzhydrols
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Compounds having the formula STR1 WHERE X is --CO-- or --CHOH--, Y and Z are halogen, alkyl, trifluoromethyl, alkoxy, hydroxy, nitro, cyano, carboxy, carbalkoxy, carbamoyl, or alkylthio, and m and n are 0, 1, or 2 Are useful in controlling undesirable secondary growth in plants, particularly sucker growth in tobacco.
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