68640-00-6Relevant academic research and scientific papers
Red organic electroluminescent material and preparation method thereof
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Paragraph 0041-0043, (2020/09/16)
The invention belongs to the technical field of photoelectric display devices, and particularly relates to a red organic electroluminescent material and a preparation method thereof. The invention provides the red light organic electroluminescent material, the structure of which is represented by formula (I): wherein R is a hydrogen atom, a linear chain or branched chain alkyl group with a carbonatom number of 1-20, x is 0-1, and the polymerization degree n is 3-800. The invention also provides a preparation method of the red light organic electroluminescent material. The preparation method comprises that 2', 7 '-dibromo-1, 2, 7, 8-tetraoctyl-9'-spiro-bis[fluorene], 2, 2'-(1', 2 ', 7', 8 '-tetraoctyl-9, 9'-spiro-bis [fluorene]-2, 7-diyl)bis(4, 4, 5, 5-tetramethyl-1, 3, 2-dioxaborane) and3, 10-dibromo-14-(3-(5-phenyl-1, 3, 4-oxadiazole-2-yl) phenyl)-14H-bis (S, S-dioxo-dibenzothiophene)pyrrole undergo a Suzuki coupling reaction to produce a polymer shown as a formula (I). The red light organic electroluminescent material and the preparation method thereof provided by the invention solve the technical problem of poor electroluminescent performance of the existing red-light polymer.
Deep-blue emitting poly(2′,3′,6′,7′-tetraoctyl-2,7-spirosilabifluorene) simultaneously with good color purity and high external quantum efficiency
Xu, Xiushang,Bai, Keyan,Ding, Junqiao,Wang, Lixiang
, p. 77 - 83 (2018/05/22)
A deep-blue emitting poly(2′,3′,6′,7′-tetraoctyl-2,7-spirosilabifluorene), namely PSSiBF, has been newly developed for PLEDs. Unlike the previously-reported alkyl-functionalized P27SiF, the unwanted aggregation can be effectively prevented in PSSiBF due t
IMPROVED FULLERENE DERIVATIVES AND RELATED MATERIALS, METHODS AND DEVICES
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Page/Page column 89; 90, (2014/11/13)
The invention relates to improved fullerene derivatives, to methods for their synthesis and any educts or intermediates used in such methods, to compositions and formulations containing fullerene derivatives, to the use of the fullerene derivatives, compo
POLYMERS WITH TUNABLE BAND GAPS FOR PHOTONIC AND ELECTRONIC APPLICATIONS
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Page/Page column, (2013/04/24)
The present invention provides, among other things, a copolymer comprising at least one donor monomer and at least one acceptor monomer. The polymer may optionally further comprise at least one additional comonomer. The polymers are useful as a charge-tra
POLYMERS WITH TUNABLE BAND GAPS FOR PHOTONIC AND ELECTRONIC APPLICATIONS
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, (2011/02/15)
A copolymer comprising at least one donor monomer and at least one acceptor monomer is described. The polymer may optionally further comprise, consist or consist essentially of at least one additional comonomer. Various donor monomers, acceptor monomers and additional comonomers are also described. The polymer is useful in the manufacture of microelectronic devices such as optoelectronic devices.
Discotic Liquid Crystals of Transition Metal Complexes 11: The First ?-Acceptor in Discotic Columnar Liquid Crystals Obtained from Octasubstituted Bis(diphenylethane-1,2-dithiolene)nickel Complexes
Ohta, Kazuchika,Hasebe, Hiroshi,Ema, Hiroshi,Moriya, Mitsuo,Fujimoto, Tetsuya,Yamamoto, Iwao
, p. 21 - 32 (2007/10/02)
Disk-like complexes, bisnickel (n-alkyl = n-hexyl, n-octyl) and bisnickel have been synthesized and characterized.It was found that n-decyloxy derivative exhibits a hexagonal discordered columnar (Dhd) mesophase while n-alkyl derivatives are not discotic liquid crystals but isotropic liquids at room temperature.The half-wave potentials for reduction of these complexes is -0.04 - -0.06 V. n-Decyloxy derivative is the first ?-acceptor in discotic columnar liquid crystals.
Discotic liquid crystals of transition metal complexes, 5: Double melting behaviour and double clearing behaviour of discogens
Ohta, Kazuchika,Ema, Hiroshi,Muroki, Hiromitsu,Yamamoto, Iwao,Matsuzaki, Kei
, p. 61 - 78 (2007/10/02)
Two new octa-substituted disk-like bis(β-diketonato)copper(II) complexes, 8C8-Cu and 8C8O-Cu, have been synthesized.The same type of octa-substituted copper complexes, 8C9O-Cu, which was synthesized for the first time by A
