- Triazine-dibenzofuran-based n-type host materials for high-efficiency and long-lifetime green phosphorescent organic light-emitting diodes
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Effective host materials are required to improve the performance of phosphorescent organic light-emitting diodes (PhOLEDs). Herein, a series of triazine-dibenzofuran-based n-type host materials,DBT1-DBT4, was prepared by varying the substitution position of dibenzofuran. The photophysical, thermal, and electrochemical properties as well as the device performance of these materials were investigated to establish structure-property relationships. The results demonstrated that the substitution position of dibenzofuran significantly affects the chemical structure, resulting in differences in electrochemical and photophysical properties. All the developed materials were utilized in green top-emitting PhOLEDs as an n-type host material mixed with a p-type host (BPCz), and their electroluminescence (EL) properties were assessed by systematically analysing 18 devices. Among them, the green PhOLEDs using a mixed host ofDBT4/BPCz(DBP4-III) displayed the best EL performance with a high current efficiency up to 131.98 cd A?1, an external quantum efficiency up to 30.90%, and a power efficiency up to 105.44 lm W?1with a device lifetime (T95) of 180 h at 10?000 nits. These findings are expected to aid in the development of improved n-type host materials for highly efficient top-emitting PhOLEDs with long operational lifetimes.
- Kim, Dong Jun,Lee, Sunhee,Lee, Yong Hui,Jang, Hyungkeun,Ahn, Kwang-Hyun,Han, Won-Sik
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- PHOSPHORESCENT HOST COMPOSITION, ORGANIC OPTOELECTRONIC DIODE, AND DISPLAY DEVICE
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Provided are a composition for a phosphorescent host including a first host represented by Chemical Formula 1, a second host represented by a combination of Chemical Formula 2 and Chemical Formula 3; and an organic optoelectronic device including an anode and a cathode facing each other and an organic layer disposed between the anode and the cathode, wherein the organic layer includes an auxiliary layer including at least one of a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer and a light emitting layer, and the light emitting layer includes a phosphorescent dopant having a maximum photoluminescence wavelength of 550 nm to 750 nm along with the composition, and a display device including the same. Details of Chemical Formulae 1 to 3 are the same as defined in the specification.
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Paragraph 0189-0190
(2021/04/17)
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- COMPOUND FOR ORGANIC OPTOELECTRONIC DEVICE, COMPOSITION FOR ORGANIC OPTOELECTRONIC DEVICE, ORGANIC OPTOELECTRONIC DEVICE, AND DISPLAY DEVICE
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The present invention relates to a compound for an organic optoelectronic device, represented by Chemical Formula 1; a composition for an organic optoelectronic device, including same; an organic optoelectronic device; and a display device. The description of Chemical Formula 1 is the same as that defined in the specification.
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Paragraph 0261; 0262-0263
(2021/09/03)
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- Organic compound, and organic electroluminescent device and electronic device using same
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The invention relates to an organic compound. The structure of the organic compound comprises a formula I. When the organic compound provided by the invention is used for a light-emitting layer of anorganic electroluminescent device, the device efficiency of the device can be effectively improved, and the service life of the organic electroluminescent device is prolonged.
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Paragraph 0164-0169
(2021/02/20)
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- Nitrogen-containing compound and organic electroluminescent device thereof
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The invention provides a nitrogen-containing compound and an organic electroluminescent device thereof, and relates to the technical field of organic photoelectric materials. The nitrogen-containing compound of the chemical formula 1 takes a nitrogen-containing group as a bridging group, one end of the bridging group is connected with oxazole, thiazole and imidazole functional groups, and the other end of the bridging group is connected with a spiroanthracene functional group. The nitrogen-containing compound of the chemical formula 1 has high electron transport performance, hole blocking performance and stability, and the organic electroluminescent device obtained by using the nitrogen-containing compound as a hole blocking material has low voltage, high luminous efficiency and long service life. In addition, the organic electroluminescent device with a covering layer containing the diamine compound of a chemical formula 2 has high light-emitting efficiency and long service life.
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Paragraph 0147-0149; 0192-0194
(2021/06/21)
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- TRIAZINE UV ABSORBERS AND A PROCESS FOR THE PREPARATION THEREOF
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The presently claimed invention relates to novel, highly efficient triazine UV absorbers and a general process for the preparation UV absorber compounds from natural precursors.
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Page/Page column 57-58
(2021/07/02)
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- ORGANIC OPTOELECTRONIC DEVICE AND DISPLAY DEVICE
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An organic optoelectronic device and a display device including the organic optoelectronic device, the organic optoelectronic device including an anode and a cathode facing each other, a light emitting layer between the anode and the cathode, a hole transport layer between the anode and the light emitting layer, and a hole transport auxiliary layer between the light emitting layer and the hole transport layer, wherein the light emitting layer includes a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, and the hole transport auxiliary layer includes a third compound represented by Chemical Formula 3,
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Paragraph 0262; 0275; 0276
(2020/05/29)
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- ORGANIC COMPOUND AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
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The present invention discloses an organic compound resented by the following formula (1) and an organic electroluminescence device using the organic compound. The organic compound may be for lowering a driving voltage or power consumption or increasing a current efficiency of half-life of the organic electroluminescence device. The same definition as described in the present invention.
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Paragraph 0059-0061
(2020/08/05)
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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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Paragraph 0071; 0072; 0080; 0117; 0128; 0129
(2020/05/01)
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- Organic compound based on triazine and benzimidazolone structures and application of organic compound in organic electroluminescent device
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The invention relates to an organic compound based on triazine and benzimidazolone structures and an application of the organic compound in an organic electroluminescent device. The structure of the compound simultaneously contains the triazine and benzimidazolone structures, and the compound has high glass transition temperature and molecular thermal stability; the compound is low in absorption and high in refractive index in the field of visible light, and after the compound is applied to a covering layer of an OLED device, the light extraction efficiency of the OLED device can be effectively improved; the compound disclosed by the invention also has a relatively deep HOMO energy level and high electron mobility, can be used as a hole blocking or electron transport layer material of theOLED device, and can effectively block holes or energy from being transmitted from a light emitting layer to one side of an electron layer, thereby improving the recombination efficiency of the holesand electrons in the light emitting layer, improving the light emitting efficiency of the OLED device, and prolonging the service life of the OLED device.
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Paragraph 0143; 0149-0150; 0152-0153; 0160
(2020/04/17)
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- New method used for high selectivity synthesis of 2, 4-di(4- biphenylyl)-6-chloro-1, 3, 5-s-triazine
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The invention belongs to the field of ultraviolet ray absorber, and more specifically relates to a new method used for high selectivity synthesis of 2, 4-di(4- biphenylyl)-6-chloro-1, 3, 5-s-triazine.The 2, 4-di(4- biphenylyl)-6-chloro-1, 3, 5-s-triazine is a key intermediate of novel ultraviolet ray absorber UV-1600 (2, 4-di(4- biphenylyl)-6-(2-hydroxyl-4- isooctyloxy)phenyl-1, 3, 5-s-triazine).In the prior art, Grignard method is adopted in synthesis of 2, 4-di(4- biphenylyl)-6-chloro-1, 3, 5-s-triazine, in the synthesis process, biphenyl self coupling and other side reactions are easily caused if the temperature is too high, and high yield production is impossible to realize if the temperature is too low. According to the new method, Grignard method is adopted to obtain a substitutedcompound, and the substituted compound and biphenylyl lithium are reacted to obtain 2, 4-di(4- biphenylyl)-6-chloro-1, 3, 5-s-triazine at high yield. The reaction conditions are mild; yield and selectivity are high; and subsequent purifying steps are few.
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Paragraph 0019; 0021; 0023; 0025
(2019/12/09)
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- COMPOSITION AND ORGANIC OPTOELECTRONIC DEVICE AND DISPLAY DEVICE
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A composition including a first compound, the first compound being represented by a combination of Chemical Formula 1 and Chemical Formula 2 bonded together, and a second compound, the second compound being represented by Chemical Formula 3, as well as an organic optoelectronic device and a display device are disclosed In Chemical Formula 1 to Chemical Formula 3, each substituent is the same as described in the specification.
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Paragraph 0274-0277
(2020/02/19)
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- Compound containing triazine group, and applications thereof, and organic electroluminescent device
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The present invention relates to the field of organic electroluminescent devices, and discloses a compound containing a triazine group, and applications thereof, and an organic electroluminescent device, wherein the compound has a structure represented by a formula (1), a formula (2) or a formula (3), A represents a triazine group, the hydrogen on at least one carbon atom of the triazine group issubstituted by aryl, B represents a fluorene group, the two hydrogen on the carbon atom of the methylene on the five-membered ring of the fluorene group are respectively substituted by alkyl, and C represents a silicon group linked to at least two phenyl. According to the present invention, the new compound containing the fluorene group, the phenyl silicon group and the triazine group can increasethe triplet state energy level of the material, and can make the material simultaneously have high hole mobility and high electron mobility. The formula (1) is A-L11-B-L12-C, the formula (2) is A-L21-C-L22-B, and the formula (3) is B-L31-A-L32-C.
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Paragraph 0253-0255
(2018/09/11)
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- ORGANIC LIGHT-EMITTING DIODE MATERIALS
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Described herin are molecules for use in organic light emitting diodes. Example molecules comprise at least one acceptor moiety A, at least one donor moiety D, and optionally one or more bridge moieties B. Each moiety A is covalently attached to either the moiety B or the moeity D, each moiety D is covalently attached to either the moeity B or the moeity A, and each B is covalently attached to at least one moiety A and at least one moiety D. Values and preferred values of moieties A, D and B are defined herein.
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Paragraph 0567
(2018/08/09)
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- COMPOSITION FOR ORGANIC OPTOELECTRONIC DEVICE, ORGANIC OPTOELECTRONIC DEVICE AND DISPLAY DEVICE
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Disclosed are a composition for an organic optoelectronic device including at least one first compound represented by Chemical Formula 1 and at least one second compound represented by Chemical Formula 2, organic optoelectronic device including the same, and a display device including the organic optoelectronic device. Chemical Formula 1 and 2 are the same as described in the specification.
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Paragraph 0131; 0132
(2017/06/22)
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- Organic compound based on triazine and benzimidazole and application thereof to organic light-emitting diode (OLED) device
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The invention relates to an organic compound based on triazine and benzimidazole and application thereof to an organic light-emitting diode (OLED) device. The compound disclosed by the invention has a high vitrification temperature and high molecular thermal stability; the compound has a low absorption rate and a high refraction rate in the field of visible light, and can be applied to a CPL (Circular-Polarizing Filter) layer of the OLED device to effectively increase the light output efficiency of the OLED device; the compound also has a deep HOMO (Highest Occupied Molecular Orbital) energy level and a high electron mobility, can be taken as a hole-blocking/electron transport layer material of the OLED device, and can effectively block holes or prevent energy from being transported from a light-emitting layer to one side of an electron layer, so that the compound efficiency of the holes and electrons on the light-emitting layer is increased, and the light-emitting efficiency and the service life of the OLED device are increased and prolonged.
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Paragraph 0053; 0060; 0061; 0062; 0063; 0064; 0065
(2017/09/01)
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- MATERIALS FOR ELECTRONIC DEVICES
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The present invention relates to a compound of a formula (I), in which an electron-deficient group and an arylamino group are connected to one another via an intermediate group. The compound of the formula (I) is suitable as functional material in electronic devices.
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Paragraph 0187-0189
(2016/10/31)
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- Triazine angiogenesis inhibitors
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Compounds having Formula I STR1 or pharmaceutically acceptable salts or prodrugs thereof, are useful for treating pathological states which arise from or are exacerbated by angiogenesis. The invention also relates to pharmaceutical compositions comprising these compounds and to methods of inhibiting anglogenesis in a mammal.
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