97511-05-2Relevant articles and documents
S,S-dioxo-dibenzothiophene and phenanthroimidazole based small molecule and application thereof in electroluminescent devices
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Paragraph 0023; 0026; 0027-0028, (2020/07/12)
The invention discloses an S,S-dioxo-dibenzothiophene and phenanthroimidazole based small molecule and application thereof in electroluminescent devices. Phenanthroimidazole is used as a donor unit, S,S-dioxo-dibenzothiophene is used as an acceptor unit, and a novel donor-acceptor type blue fluorescent molecule is constructed. The molecule has the characteristics of S,S-dioxo-dibenzothiophene suchas wide band gap, high fluorescence quantum yield, strong electron affinity, high electron mobility, and also has the characteristics of phenanthroimidazole such as large conjugate rigid structure, bipolar transmission, and the like. The molecule has an asymmetric structure, and can inhibit molecular aggregation and reduce exciton quenching. In addition, the emission spectrum can be adjusted by changing the connection sites of the two units. The small molecule can be used for preparing high-efficiency blue light organic electroluminescent devices with different emission wavelengths.
Non-Doped Deep Blue and Doped White Electroluminescence Devices Based on Phenanthroimidazole Derivative
Chen, Shuo,Wu, Yukun,Hu, Shoucheng,Zhao, Yi,Fang, Daining
, p. 451 - 461 (2017/03/07)
A novel deep-blue emitter PhImPOTD based on phenathroimidazole was synthesized, which is incorporated by an electron-donating dibenzothiophene unit and electron-withdrawing phenanthroimidazole and diphenylphosphine oxide moieties. Furthermore, the weak π–π stacking and intermolecular aggregation render the photoluminescence quantum yield is as high as 0.34 in the solid state. Non-doped organic light emitting diodes (OLEDs) based on PhImPOTD emitter exhibits a low turn-on voltage of 3.6?V, a favorable efficiency of 1.13?cd A?1 and a deep blue emission with Commission Internationale de l’Eclairage (CIE) coordinates of (0.15, 0.08). The CIE is very close to the NTSC (National Television Standards Committe) blue standard (CIE: 0.14, 0.08). PhImPOTD is also utilized as blue emitter and the host for a yellow emitter (PO-01) to fabricate white organic light-emitting diodes (WOLEDs). This gives a forward-viewing maximum CE of 4.83?cd A?1 and CIE coordinates of (0.32, 0.32) at the luminance of 1000?cd?m?2. Moreover, the single-carrier devices unambiguously demonstrate that typical bipolar-dominant characteristics of PhImPOTD. This work demonstrates not only that the phenanthroimidazole unit is an excellent building block to construct deep blue emission materials, but also the introduction of a diphenylphosphine oxide deprotonation substituent is an efficient tactic for harvesting deep-blue emitting devices.
COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT COMPRISING THE SAME AND ELECTRONIC DEVICE THEREOF
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Paragraph 0138; 0139; 0140; 0141, (2017/04/19)
The present invention refers to formula 1 compounds represented by number under public affairs substrate. In addition, electrode number 1, number 2 electrode and said number 1 electrode including said number 2 electrode and electrode under public affairs number organic solvent, said organic compound layer is formed comprises a formula 1 compound. Organic compound represented by formula 1 organic layer of the electrical component are included, a predetermined driving voltage, luminous efficiency, can be fixed to the color purity and their service life. (by machine translation)