1153-85-1Relevant articles and documents
Pyridyl Pyrrolide Boron Complexes: The Facile Generation of Thermally Activated Delayed Fluorescence and Preparation of Organic Light-Emitting Diodes
Shiu, Yi-Jiun,Cheng, Yung-Chen,Tsai, Wei-Lung,Wu, Chung-Chih,Chao, Chun-Tien,Lu, Chin-Wei,Chi, Yun,Chen, Yi-Ting,Liu, Shih-Hung,Chou, Pi-Tai
, p. 3017 - 3021 (2016)
The electron positive boron atom usually does not contribute to the frontier orbitals for several lower-lying electronic transitions, and thus is ideal to serve as a hub for the spiro linker of light-emitting molecules, such that the electron donor (HOMO)
Novel bifluorene based conjugated systems: Synthesis and properties
Grisorio, Roberto,Dell'Aquila, Antonio,Romanazzi, Giuseppe,Suranna, Gian Paolo,Mastrorilli, Piero,Cosma, Pynalisa,Acierno, Domenico,Amendola, Eugenio,Ciccarella, Giuseppe,Nobile, Cosimo Francesco
, p. 627 - 634 (2006)
A series of novel bifluorene based systems was synthesised by a convergent approach by means of a Suzuki cross-coupling between 7,7′-bis-(4,4,5,5- tetramethyl-[1,3,2]dioxaborolan-2-yl)-9,9,9′,9′-tetraoctyl-2, 2′-bifluorene and suitable aryl-bromides. All
Efficient thermally activated delayed fluorescence of functional phenylpyridinato boron complexes and high performance organic light-emitting diodes
Shiu, Yi-Jiun,Chen, Yi-Ting,Lee, Wei-Kai,Wu, Chung-Chih,Lin, Tzu-Chieh,Liu, Shih-Hung,Chou, Pi-Tai,Lu, Chin-Wei,Cheng, I-Chen,Lien, Yi-Jyun,Chi, Yun
, p. 1452 - 1462 (2017)
A new series of functional phenylpyridinato boron complexes possessing thermally activated delayed fluorescence (TADF) has been strategically designed and synthesized. These boron complexes utilize phenylpyridine as the electron acceptor (A) that links to carbazole or triphenyl amine as the electron donor (D) via a core boron atom, forming four-coordinate neutral boron complexes. The selection of boron to spatially separate the donor and acceptor takes advantage of facile functionalization. The TADF properties of the resulting D-A functional materials in various solvents have been investigated via their emission spectra and associated relaxation dynamics. The results show that the operation of TADF is strongly solvent polarity dependent in fluid states, and several underlying mechanisms are discussed. OLEDs fabricated by fppyBTPA and dfppyBTPA show EL efficiencies of up to (20.2%, 63.9 cd A?1, 66.9 lm W?1) and (26.6%, 88.2 cd A?1, 81.5 lm W?1), respectively, in which a nearly 27% EQE for the dfppyBTPA device is among the most efficient TADF OLEDs so far.
Imidazolyl-Phenylcarbazole-Based Host Materials and Their Use for Co-host Designs in Phosphorescent OLEDs
Yi, Rong-Huei,Lei, Ya-Chun,Tseng, Yeh-Hsiang,Lin, Yi-Fan,Cheng, Yen-Chia,Fang, Yu-Chuan,Ho, Cheng-Yung,Tsai, Wei-Wen,Chang, Chih-Hao,Lu, Chin-Wei
, (2021/12/06)
In recent years, owing to the demand for high-efficiency phosphorescent organic light-emitting devices (PhOLEDs), many studies have been conducted on the development of bipolar host materials. A series of imidazolyl-phenylcarbazole-based host materials, i
Thiophene ethylene malononitrile structural compound and preparation method thereof
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Paragraph 0069-0071, (2021/04/28)
The invention discloses a thiophene ethylene malononitrile structural compound and a preparation method thereof. The structural formula is shown in the specification. The thiophene ethylene malononitrile structural compound is obtained through multi-step
Preparation method of 3 - bromo - N - phenyl carbazole
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Paragraph 0024; 0032-0038; 0039; 0047-0053, (2021/10/11)
The invention relates to a preparation method of 3 -bromo - N -phenyl carbazole, and belongs to the technical field of organic chemistry. To the invention, diphenylamine serves as a starting raw material, and 2 -bromophenylaniline is obtained through bromination reaction. Then, intramolecular cyclization is carried out to obtain carbazole. Then, 3 - bromocarbazole is obtained by bromination reaction. Finally, a substituted 3 - bromo - N -phenyl carbazole is obtained. By controlling the concentration and reaction environment of the reactants, the selectivity of the reaction site is effectively improved, the used raw materials are simple and easy to obtain, the preparation period is relatively short, and the reaction process is simple and easy to control.
Nitrogen-containing compound, electronic element and electronic device
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Paragraph 0176-0180, (2021/01/29)
The invention belongs to the technical field of organic materials, and provides a nitrogen-containing compound represented by a chemical formula 1, an electronic element and an electronic device. Thenitrogen-containing compound can improve the performance of an electronic element.
Aromatic compound and organoelectroluminescent device comprising the compound
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Paragraph 0493-0498, (2021/08/31)
The present invention relates to an aromatic compound and an organic electroluminescent device including the same. The aromatic compound is represented by chemical formula 1, and the organic electroluminescent device is excellent in driving voltage, luminous efficiency and lifetime characteristics.
COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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Paragraph 0125-0128, (2021/02/16)
An object of the present invention is to provide a compound capable of improving high luminous efficiency, low driving voltage and lifespan of a device, an organic electric element using the same, and an electronic device thereof. The present invention provides the compound represented by any one of chemical formulas 6 to 9. By using the compound according to the present invention, high luminous efficiency and low driving voltage of the device can be achieved, and the lifespan of the device can be greatly improved.
Functional material based on stable chemical structure
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Paragraph 0291; 0296, (2021/08/25)
The invention relates to functional materials based on stable chemical structures. A series of novel donor - acceptor type TADF activated emitters have been designed, which are intended to develop stable OLED. with enhanced operational stability and improved color purity that can be used in full color displays and lighting applications.