- Organic fluorescent dendrimer thin film material and preparation method thereof
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The invention discloses an organic fluorescent dendritic molecular film material and a preparation method thereof, and relates to the technical field of fluorescence sensing. A dendritic molecular main chain skeleton is formed by a central core unit A and
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- Heterocyclic compound with xanthone as core and preparation method and applications thereof
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The invention discloses a heterocyclic compound with xanthone as a core and a preparation method and applications thereof, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is represented by a general formula (I) shown in the description. The invention also discloses the preparation method and the applications of the compound. The compound of the invention has high glass transition temperature and molecular thermal stability and has a suitable HOMO and LUMO energy leves, has a singlet-triplet energy level difference ([delta]Est), andcan be used as a doping material of a light emitting layer of an organic electroluminescent device, thereby improving the luminous efficiency and service life of the device.
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Paragraph 0267-0270; 0275-0278
(2019/11/29)
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- A benzhydryl radical based on the room temperature of the organic light-emitting material and using the material preparation of organic electroluminescent device
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A benzhydryl radical based on the stability of the organic light-emitting material at room temperature and using the material preparation of the organic electroluminescent device, which belongs to the field of organic light-emitting technology. The present invention in the preparation of the organic light-emitting material, the center of the common characteristic is the carbon free radical, is composed of two C - C covalent bond and a C - N to form a covalent bond. Stability is the light-emitting free radical material in the application of the key nature, connected to the electronic group conducive to stable free radical, in this invention through the nitrogen-containing heterocyclic carbazole, indole, dimethyl acridine and the like in the electronic group to the nitrogen atom is connected directly to the benzyl group, to obtain a stable benzhydryl radical, its stability and PTM, compared with the TTM is greatly improved, and has a room temperature fluorescent. The preparation of the material of the organic electroluminescent device using double thread condition exciton light-emitting, can avoid the traditional organic electroluminescent device in the use of the triplet state exciton, the maximum external quantum efficiency of the device is 0.66%.
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Paragraph 0066; 0077; 0078
(2018/07/30)
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- TRIAZINE-SUBSTITUTED INDOLOCARBAZOLE DERIVATIVE, ALCOHOL INSOLUBLE COATING FILM FOR FORMING ORGANIC ELECTRONIC DEVICE MADE OF THE SAME, AND ORGANIC ELECTRONIC DEVICE USING THE SAME
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PROBLEM TO BE SOLVED: To provide a new compound capable of forming a laminated structure insoluble to an alcohol solvent and also functionally separated by a coating method, concretely, a new compound as a phosphorescence holst material combining the excitation energy in a high triplet state of a luminescent layer capable of lamination without dissolving a hole transport layer as the lower layer and an electron transport layer as the upper layer and charge injection-transport, and an organic electronic device using the new compound. SOLUTION: Provided is a triazine-substituted indrocarbazole derivative represented by formula (1). SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
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Paragraph 0063-0064
(2017/09/16)
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- Separation of electrical and optical energy gaps for constructing bipolar organic wide bandgap materials
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An electrical and optical energy gaps separation strategy is put forward for the design of organic wide bandgap semiconductors. This new principle could achieve optimization of wide bandgap (both high singlet and triplet energies) and favorable carrier injection energy levels simultaneously.
- Hu, Dehua,Shen, Fangzhong,Liu, He,Lu, Ping,Lv, Ying,Liu, Dandan,Ma, Yuguang
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supporting information; experimental part
p. 3015 - 3017
(2012/04/04)
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- Carbazole derivative, organic semiconductor element, light emitting element, and electronic device
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The problem of the present invention is to provide a carbazole derivative which has an excellent heat resistance and can be formed into a film without crystallization. Also, a problem is to produce an organic semiconductor element, a light emitting element and an electronic device by employing the carbazole derivative. For the purpose, a novel carbazole derivative represented by following general formula (1) is provided: (in the formula, I represents a core carbazole (G0) illustrated by general formula (2), Z represents an internally branched carbazole (G1 to Gn-1) illustrated by general formula (3), E represents an end carbazole (Gn) illustrated by general formula (4), n represents an integer showing generation number of dendrimer, X1 represents hydrogen, halogen, a cynano group, an alkyl group, an aryl group, a heterocyclic residue or the like, X2 and X3 in (G(n-m)-1) (provided, n-m≧1) make a covalent bond with X4 in (G(n-m)), and each of R1 to R8 represents independently hydrogen, halogen, a cynano group, an alkyl group, a dialkylamino group, a diarylamino group, a heterocyclic residue or the like).
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Page/Page column 18-19
(2008/06/13)
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