Organic light emitting compound, preparation method of organic light emitting compound and organic light emitting device
A luminescent compound and compound technology, applied in organic chemistry, chemical instruments and methods, luminescent materials, etc., can solve problems such as reducing color purity, and achieve the effects of easy-to-obtain raw materials, simple preparation methods, and long service life
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[0047] The present invention also provides a method for preparing an organic luminescent compound, comprising the following steps:
[0048] Mixing and reacting the compound of the formula (II) and the compound of the formula (III) to obtain the organic light-emitting compound of the formula (I);
[0049]
[0050] According to the present invention, the compound of formula (II) structure and the compound of formula (III) structure are mixed and reacted to obtain the compound of formula (I) structure. In the present invention, in the compound of formula (II) structure, R 1 , R 2 and R 3 The selection range is the same as the limitation in the aforementioned compounds; Ar in the compound of the formula (III) structure 1 、Ar 2 and Ar 3 The selection of substituents is also the same as the aforementioned compounds. The present invention has no special requirements on the reaction conditions, and those skilled in the art can select appropriate reaction conditions according to...
experiment example
[0095] [Experimental example] Green organic light-emitting device (electron transport layer)
[0096] First, 4,4',4"-tris[2-naphthylphenylamino]triphenylamine (hereinafter referred to as 2- TNATA) to form a hole injection layer, and vacuum-evaporated N,N'-diphenyl-N,N'-(1-naphthyl)-1,1'- with a thickness of 60 nm on the formed hole injection layer. Biphenyl-4,4'-diamine (hereinafter abbreviated as NPD) to form the hole transport layer. Then, on the above hole transport layer, the vacuum evaporation thickness is 30nm, with 4,4'-bis(9- Carbazole) biphenyl is the main body (hereinafter referred to as CBP), and the doped mixture is the light-emitting layer with three (2-phenylpyridine) iridium, and the weight ratio of the main material and the doping material is 95:5. Next, Bis(2-methyl-8-hydroxyquinoline-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum (hereinafter referred to as BAlq) was formed by vacuum evaporation with a thickness of 10 nm on the above-mentioned light-emitting layer...
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