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Triazine compound containing silicon atom and its application and an organic electroluminescent device
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A triazine compound and compound technology, applied in the field of organic electroluminescent devices, can solve the problems of high driving voltage, low current efficiency and brightness, and inability to obtain high-performance organic electroluminescent devices, so as to improve current efficiency and reduce driving voltage Effect
Active Publication Date: 2021-01-12
BEIJING GREEN GUARDEE TECH
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Problems solved by technology
The materials currently used to form the various layers of OLED still have the defects of high driving voltage, short service life, low current efficiency and brightness, which makes it impossible to obtain organic electroluminescent devices with better performance.
Method used
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specific Embodiment approach 1
[0034]L1And L2Each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl or L1And L2Each independently does not exist;
[0035]R1And R2Each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted fluorenyl, dibenzothienyl and dibenzofuranyl ;
[0036]A is the structure shown in A1, A2, A3 or A4;
[0037]X is O or S;
[0038]The substituents are each independently selected from C1-12The alkyl group, C1-12的alkoxy。
specific Embodiment approach 2
[0040]In formula (I) and formula (II),
[0041]L1And L2Each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl or L1And L2Each independently does not exist;
[0042]R1And R2Each independently selected from phenyl, biphenyl, terphenyl, fluorenyl, dibenzothienyl and dibenzofuranyl;
[0043]A is the structure shown in A1, A2, A3 or A4;
[0044]X is O or S;
[0045]The substituents are each independently selected from C1-6The alkyl group, C1-6的alkoxy。
specific Embodiment approach 3
[0047]In formula (I) and formula (II),
[0048]L1And L2Each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl or L1And L2Each independently does not exist;
[0049]R1And R2Are all phenyl;
[0050]A is the structure shown in A1, A2, A3 or A4;
[0051]X is O or S;
[0052]The substituents are each independently selected from C1-3The alkyl group, C1-3的alkoxy。
[0053]The C1-6The alkyl group may be, for example, methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, cyclopentyl, n-hexyl, and cyclohexyl.
[0054]The C1-6The alkoxy group can be, for example, methoxy, ethoxy, n-propoxy, isopropoxy, cyclopropoxy, n-butoxy, isobutoxy, tert-butoxy, n-pentoxy, Cyclopentyloxy, n-hexyloxy, cyclohexyloxy.
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Abstract
The invention relates to the field of organic electroluminescent devices, and discloses a triazine compound containing a silicon atom and an application thereof and an organic electroluminescent device. The compound has a structure shown in formula (I) or formula (II). (I) and formula (II), L 1 and L 2 each independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl or L 1 and L 2 Each independently does not exist; A is the structure shown in A1, A2, A3 or A4; X is O or S. When the silicon atom-containing triazine compound provided by the invention is used as an electron transport material, it can effectively reduce the driving voltage and improve the current efficiency, brightness and lifespan.
Description
Technical field[0001]The invention relates to the field of organic electroluminescence devices, in particular to a triazine compound containing silicon atoms, the application of the triazine compound containing silicon atoms in organic electroluminescence devices, and the triazine compound containing the silicon atoms Organic electroluminescent device.Background technique[0002]Compared with traditional liquid crystal technology, organic electroluminescence (OLED) technology does not require backlight illumination and color filters. The pixels can emit light on the color display panel by themselves, and have ultra-high contrast and ultra-wide visibility. Features such as angle, curved surface and thin profile.[0003]The performance of OLED is not only affected by the light-emitting body, in particular, the materials forming each layer of the OLED have a very important impact on the performance of the OLED, such as substrate materials, hole blocking materials, electron transport materi...
Claims
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Application Information
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