947770-80-1Relevant articles and documents
Organic light-emitting diode having alleviated luminance reduction in low dynamic range
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Page/Page column 61; 63-64, (2022/02/22)
The present disclosure relates to an organic light-emitting diode which can operate at a low voltage with high efficiency and exhibits the effect of having an alleviated luminance reduction rate in a low dynamic range. More particularly, the organic light-emitting diode comprises: a first electrode; a second electrode facing the first electrode; and a light-emitting layer and a charge balance control layer arranged sequentially between the first and the second electrode, wherein the light-emitting layer includes at least one of amine derivative compounds represented by the following Chemical Formula A and the charge balance control layer includes at least one of anthracene derivative compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A, B, and C are as defined in the specification.
ORGANIC LIGHT-EMITTING DIODE HAVING LONG LIFESPAN, LOW VOLTAGE, AND HIGH EFFICIENCY PROPERTY
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Paragraph 0166-0167, (2021/09/17)
The present disclosure relates to an organic light-emitting diode and, more particularly, to an organic-light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer intercalated between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A and at least one of the anthracene compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A to C are the same as in the specification.
Visible Light-Induced Borylation of C-O, C-N, and C-X Bonds
Arman, Hadi D.,Dang, Hang. T.,Haug, Graham C.,He, Ru,Jin, Shengfei,Larionov, Oleg V.,Nguyen, Viet D.,Nguyen, Vu T.,Schanze, Kirk S.
supporting information, (2020/02/04)
Boronic acids are centrally important functional motifs and synthetic precursors. Visible light-induced borylation may provide access to structurally diverse boronates, but a broadly efficient photocatalytic borylation method that can effect borylation of a wide range of substrates, including strong C-O bonds, remains elusive. Herein, we report a general, metal-free visible light-induced photocatalytic borylation platform that enables borylation of electron-rich derivatives of phenols and anilines, chloroarenes, as well as other haloarenes. The reaction exhibits excellent functional group tolerance, as demonstrated by the borylation of a range of structurally complex substrates. Remarkably, the reaction is catalyzed by phenothiazine, a simple organic photocatalyst with MW 200 that mediates the previously unachievable visible light-induced single electron reduction of phenol derivatives with reduction potentials as negative as approximately - 3 V versus SCE by a proton-coupled electron transfer mechanism. Mechanistic studies point to the crucial role of the photocatalyst-base interaction.
ORGANIC COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT INCLUDING SAME
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Paragraph 0095-0097; 0102-0104, (2020/08/05)
The present invention relate to a novel organic compound and an organic electroluminescent device including the same, and in particular, to a novel dibenzofuran-based compound having excellent thermal stability, carrier transport ability, light emitting a
COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING SAME, AND ELECTRONIC DEVICE THEREFOR
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Paragraph 0091-0093; 0100-0102, (2020/02/19)
The present disclosure provides: a compound capable of providing high light-emitting efficiency, low driving voltage, and improved lifetime of a device; an organic electronic element using the same; and an electronic device therefor.
Dibenzothiophene dioxide-benzofuro carbazole based bipolar host material for yellow and red phosphorescent OLEDs
Bae, Il-Ji,Braveenth, Ramanaskanda,Chai, Kyu Yun,Choi, Seung Yu,Jang, Hee Jung,Kim, Bo Mi,Kim, Miyoung,Oh, Su Bin,Park, Young Hee,Raagulan, Kanthasamy,Wu, Qiong
, (2020/08/03)
2-(12H-benzofuro[3,2-a]carbazol-12-yl)dibenzo[b,d]thiophene 5,5-dioxide (DBT-INFUR) is a bipolar host material for yellow and red phosphorescent OLEDs. DBT-INFUR was designed and synthesized between dibenzothiphene acceptor and benzofuro carbazole donor with a yield of 60percent. We constructed two different devices, namely a yellow and a red phosphorescent OLEDs, and we compared the device properties with reference 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP). DBT-INFUR based yellow phosphorescent OLED device exhibited maximum current and external quantum efficiencies of 41.07 cd/A and 16.5percent, respectively and which is better than that of reference CBP based similar device (27.66 cd A, 10.15percent). DBT-INFUR based red phosphorescent OLED (12.44percent) revealed higher efficiencies when compared to the reference (7.64percent) device. The bipolar DBT-INFUR showed excellent host properties with yellow and red phosphorescent devices.
Tertiary amine derivatives and organic electroluminescent device including the same
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Paragraph 0195-0198, (2020/02/01)
Provided is a tertiary amine derivative which contributes to a substantial increase in service life of an organic electroluminescent device by minimizing damages to organic matter inside the organic electroluminescent device via effective absorption of a high-energy external light source in the UV region. According to the present invention, the organic electroluminescent device comprises: a first electrode and a second electrode; and one or more organic material layers disposed between the first electrode and the second electrode, wherein the organic material layers comprise a tertiary amine derivative represented by chemical formula 1. In the chemical formula 1, Z_1, Z_2, and Z_3 are each independently O or S.COPYRIGHT KIPO 2020
COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT USING SAME, AND ELECTRONIC DEVICE COMPRISING SAME ORGANIC ELECTRONIC ELEMENT
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Paragraph 0175; 0324-0325; 0334-0335, (2019/05/18)
Provided are an organic electric element and an electronic device comprising the same. According to the present invention, the organic electric element uses a mixture of compounds as a phosphorescent host material which can achieve a high light-emitting efficiency and a low driving voltage and can greatly improve a lifespan in an organic electric element.
Anthracene organic luminescence compound, and preparation method and application thereof
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Paragraph 0109-0116, (2019/07/01)
The invention relates to the technical field of organic optoelectronic materials and relates to an anthracene organic luminescence compound, a preparation method thereof and an organic electroluminescence device. The anthracene organic luminescence compound has a structure shown as a formula I: the formula 1 is shown in the description. Compared with other electron transfer layer materials or luminescent layer materials, the novel anthracene organic luminescence compound provided by the invention used as an electron transfer layer material or luminescent layer material of the organic electroluminescence device has the advantage that the luminous efficiency of the device prepared from the material is obviously promoted, and service life is obviously prolonged. The anthracene organic luminescence compound has the advantages of relatively short synthetic route, simple process, easily acquired raw materials, low cost and suitability for industrial production.
An efficient method for the hydrolysis of potassium organotrifluoroborates promoted by montmorillonite K10
Silva, Renato L.,Santos, Cosme S.,Santos, Jonh A. M.,Oliveira, Roberta A.,Menezes, Paulo H.,Freitas, Juliano C. R.
, p. 1777 - 1785 (2018/09/04)
An efficient and non-expensive method for conversion of diverse potassium organotrifluoroborates to their corresponding boronic acids promoted by montmorillonite K10 using water as the reaction solvent is described. Further interconversion of potassium organotrifluoroborates to their corresponding boronic esters, via boronic acid intermediates was also successfully accomplished. The products were obtained in good yields, being the rate of hydrolysis influenced by the type of substituent present in the boronic acid.