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Organic compound with nitrogen-containing spiro ring structure and its application and organic electroluminescent device
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A technology of organic compounds and nitrogen spiro rings, applied in the field of organic electroluminescent devices, can solve the problems of low driving voltage, low current efficiency and high driving voltage
Active Publication Date: 2021-11-02
BEIJING GREEN GUARDEE TECH
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[0007] The purpose of the present invention is to overcome the defects of high driving voltage and low current efficiency of organic electroluminescent devices provided by the prior art, and provide a new organic compound with nitrogen-containing spiro ring structure, in order to make the organic compound containing the nitrogen-containing spiro ring structure Compared with organic electroluminescent devices of the prior art, organic electroluminescent devices of organic compounds have lower driving voltage and higher current efficiency
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specific Embodiment approach 2
[0027] In formula (I),
[0028] R 11 , R 12 , R 13 , R 14 and R 15 each independently selected from H, C 1-6 At least one of alkyl, phenyl, naphthyl and biphenyl;
[0029] L is selected from phenyl, naphthyl and biphenyl, or L is absent;
[0030] x 1 、X 2 and x 3 Both are N;
[0031] R is present in the 1 、X 2 and x 3 A substituent at at least one position of the unsaturated ring that can be substituted, and each R is independently selected from at least one of phenyl, unsubstituted or phenyl-substituted biphenyl, naphthyl, and pyridyl.
specific Embodiment approach 3
[0032] In formula (I),
[0033] R 11 , R 12 , R 13 , R 14 and R 15 each independently is H or phenyl;
[0034] L is phenyl, or L is absent;
[0035] x 1 、X 2 and x 3 Both are N;
[0036] R is present in the 1 、X 2 and x 3 A substituent at at least one position of the unsaturated ring that can be substituted, and each R is independently selected from at least one of phenyl, unsubstituted or phenyl-substituted biphenyl, naphthyl, and pyridyl.
specific Embodiment approach 4
[0037] In formula (I),
[0038] R 11 , R 12 , R 13 , R 14 and R 15 each independently selected from H, C 1-6 At least one of alkyl, phenyl, naphthyl and biphenyl;
[0039] L is selected from phenyl, naphthyl and biphenyl, or L is absent;
[0040] x 1 、X 2 and x 3 Any two of them are N, and the remaining one is C;
[0041] R is present in the 1 、X 2 and x 3 A substituent at at least one position of the unsaturated ring that can be substituted, and each R is independently selected from at least one of phenyl, unsubstituted or phenyl-substituted biphenyl, naphthyl, and pyridyl.
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Abstract
The invention relates to the field of organic electroluminescent devices, and discloses an organic compound with a nitrogen-containing spiro ring structure, an application thereof and an organic electroluminescent device. The compound has a structure represented by formula (I). When the nitrogen-containing spiro ring structure organic compound of the present invention is used in an organic electroluminescent device, it has lower driving voltage, higher current efficiency and longer service life.
Description
technical field [0001] The present invention relates to the field of organic electroluminescent devices, in particular to an organic compound with a nitrogen-containing spiro ring structure, the application of the compound in organic electroluminescent devices, and a compound containing one or more than two of the compounds organic electroluminescent devices. Background technique [0002] In recent years, organic electroluminescent technology (OLED) has become more and more popular. Compared with liquid crystal technology, OLED has the advantages of self-luminescence, high contrast, wide viewing angle, fast response speed, flexible curved surface, and simple manufacturing process. Organic electroluminescent technology has broad application prospects, and the industrialization momentum is extremely rapid. At present, a lot of research work has been carried out in the two major fields of lighting and display, and commercialization has been realized. [0003] The principle of...
Claims
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