1190100-35-6Relevant academic research and scientific papers
Highly twisted biphenyl-linked carbazole-benzimidazole hybrid bipolar host materials for efficient PhOLEDs
Cheng, Shuo-Hsien,Hung, Wen-Yi,Cheng, Ming-Hung,Chen, Hsiao-Fan,Chaskar, Atul,Lee, Gene-Hsiang,Chou, Shu-Hua,Wong, Ken-Tsung
, p. 8554 - 8563 (2014)
Three new highly twisted bipolar host materials (PhczNBI, PhczCBI, and PhczDCBI) comprising of a biphenyl core linking a hole-transport 9-phenylcarbazole (donor) and an electron-transport N-phenylbenzimidazole (acceptor) with different topologies were synthesized, characterized, and applied as host materials for full-color phosphorescent OLEDs. The highly twisted conformations imparted through a 2,2′-biphenyl linkage effectively disrupt the π-conjugation and electronic coupling between the donor and the acceptor, thus giving the bipolar hosts promising properties such as bipolar charge transport features (μh≈ μe≈ 10-6to 10-4cm2V-1s-1) and high triplet energies (ET= 2.55-2.71 eV). The PhOLED device gave a maximum external quantum efficiency (ηext) of 19.6% for the PhczNBI host with a yellow phosphor (Bt)2Ir(acac). A two-color, single-emitting-layer and all-phosphor WOLED hosted by PhczDCBI achieved high efficiencies (13.9%, 34.9 cd A-1, and 24.8 lm W-1) and a CRI up to 65.5.
Nitrogen-containing polycyclic compound, high polymer, mixture, composition and organic electronic device
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Paragraph 0213-0215; 0218; 0331-0334, (2020/03/12)
The invention discloses a nitrogen-containing polycyclic compound represented by a general formula (1), a high polymer containing the nitrogen-containing polycyclic compound, a mixture, a compositionand an organic electronic device. According to the inven
Pyrene derivatives as well as preparation method and application
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Paragraph 0116; 0123; 0124; 0128, (2018/04/03)
The invention discloses pyrene derivatives. The pyrene derivatives take a pyrene structural unit as a precursor and introduce larger aromatic groups into the precursor, and the molecular structure hasthe characteristics of asymmetry and no coplanarity. Th
Novel hetero-cyclic compound and organic light emitting device comprising the same
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Paragraph 0137-0140, (2018/10/10)
The present invention provides a novel hetero-cyclic compound and an organic light emitting device using the same. The compound can be used as a material of an organic material layer of the organic light emitting device and can improve efficiency, low dri
Efficient non-doped deep-blue electroluminescence devices based on unsymmetrical and highly twisted pyrene derivatives
Wang, Zhiqiang,Zheng, Caijun,Fu, Weijun,Xu, Chen,Wu, Jiasheng,Ji, Baoming
, p. 14152 - 14160 (2017/11/28)
Two novel pyrene derivatives 1-3,5-diphenylphenyl-6-[2-(3,5-diphenylphenyl)phenyl]pyrene (PyPP) and 1-3,5-diphenylphenyl-6-[2-(9-phenyl-9H-carbazol-3-yl)phenyl]pyrene (PyPC) were successfully synthesized and characterized. Both these compounds exhibit uns
MULTICYCLIC COMPOUND AND ORGANIC ELECTRONIC DEVICE USING THE SAME
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Paragraph 0244-0245; 0248, (2016/10/10)
The present invention relates to a polycyclic compound and an organic electroluminescent device using the same. The compound is represented by chemical formula 1. In addition, the compound according to the present invention can be used as an organic layer material of the organic electroluminescent device.COPYRIGHT KIPO 2016
Organic electroluminescent element fluorine deriv.
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Paragraph 0116; 0117, (2016/11/21)
The present invention relates to fluorine derivatives and organic electronic devices in which said compounds are used as a matrix material in the emitting layer and/or as a hole transport material, and/or as an electron blocking or exciton blocking material, and/or as an electron transport material.
