1421789-05-0Relevant articles and documents
Electron donor compound and preparation method thereof, light emitting device and display device
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Paragraph 0075; 0129; 0130, (2021/02/06)
The invention relates to an electron donor compound, a light-emitting device, a preparation method of the light-emitting device and a display device. The electron donor compound has the following structural groups: each R1 independently selected from hydrogen, a trimethylsilyl group, a cyclohexyl group, a 3-pentyl group, a 4-(9,9'-spirobifluorene) group, a 2-(9,9'-diphenyl fluorene) group or a tetraphenyl vinyl group, wherein each R1 is not hydrogen at the same time. When the electron donor compound provided by the invention is used as an electron donor material to be applied to an interface heterojunction exciplex system, the original contact point of an electron donor and an electron acceptor is isolated by a non-hydrogen substituent, so that electrons and holes are separated in space, according to the invention, electrons of the electron acceptor layer can be prevented or hindered from easily moving into the electron donor layer, so that the electrification problem of quantum dots is avoided or relieved, and the efficiency and the service life of the light-emitting device are improved.
ANTHRACENE BASED COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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Paragraph 0225; 0226, (2018/05/03)
The present specification provides an anthracene-based compound of chemical formula 1, and an organic light emitting device having the same. By having a substituent including an aryl group or a heteroaryl group at a position of 9 and 10 of anthracene, and applying the substituent to the organic light emitting device, the light emitting efficiency and durability of the organic light emitting device can be significantly improved.COPYRIGHT KIPO 2018
MATERIALS FOR ELECTRONIC DEVICES
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Paragraph 0238; 0239, (2017/07/23)
The present invention relates to a compound of the formula (I), (II) or (III), to the use of the compound in an electronic device, and to an electronic device comprising a compound of the formula (I), (II) or (III). The present invention furthermore relates to a process for the preparation of a compound of the formula (I), (II) or (III) and to a formulation comprising one or more compounds of the formula (I), (II) or (III).
A 9,9 the [...] -Spirobifluorene-4-boronic acid synthesis method
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, (2017/04/05)
The invention discloses a preparation method of 9,9'-spirobifluorene-4-boric acid, and belongs to the field of organic chemical synthesis. The 9,9'-spirobifluorene-4-boric acid can be applied to design and synthesis of organic optoelectronic materials. The method is achieved by the following steps: with o-bromoiodobenzene as a raw material, preparing a grignard reagent from magnesium powder, catalyzing with lithium bromide, so as to generate 2-bromobiphenyl-2'-magnesium bromide, and then reacting 2-bromobiphenyl-2'-magnesium bromide with fluorenone; and preparing 9,9'-spirobifluorene-4-boric acid by catalytic closed-loop reaction of p-toluene sulfonic acid and n-butyllithium boration. The method is good in reaction selectivity, few in side reaction, mild in reaction condition, easy to control, low in cost, simple to operate and suitable for industrialized production; and the total yield is over 76%.
Novel spyrobifluorene type organic compounds and an organic electroluminescent device comprising the same
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, (2016/10/31)
The present invention provides a novel compound represented by the following Chemical Formula 1 and an organic electroluminescent device comprising the same.COPYRIGHT KIPO 2015
MATERIALS FOR ORGANIC ELECTROLUMINESCENCE DEVICES
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Paragraph 0116; 0117, (2016/10/10)
The present invention relates to compounds according to formula (1) or formula (2) which are suitable for use in electronic devices, more particularly organic electroluminescence devices, and also to electronic devices which contain said compounds.