Blue luminescent compound, blue luminescent composition, and organic electroluminescent device, display device and lighting device comprising same
The present invention discloses a blue luminescent compound, a blue luminescent composition, and an organic electroluminescent device, display device and lighting device comprising the blue luminescent compound or blue luminescent composition. The blue luminescent compound is selected from one of the following structures. The blue luminescent compound provided by the present invention is used as a host material in a blue luminescent layer. A triplet-triplet fusion process (TTF effect) of the material is improved by using an α-naphthalene substituent. The theoretical exciton utilization rate of the material is increased to 62.5%. The electron transmission rate of the material is improved by introducing an oxygen atom with a large electronegativity, thereby improving the carrier balance. Furthermore, by deuteration of at least part of naphthyl and an anthracene nucleus and combination with semi-deuterated dibenzofuran, the thermal stability of the material is significantly enhanced and at the same time an exciton energy rise caused by vibration in the material is reduced, thereby weakening the problems of damage and deterioration of a material in an adjacent layer by excitons, so that the lifetime of the organic electroluminescent device can be significantly improved, and defects in the prior art are overcome.
1 . A blue luminescent compound, characterized in that the blue luminescent compound is selected from one of the following structures:
2 . A blue luminescent composition, characterized in that the composition comprises two or more blue luminescent compounds according to claim 1 .
3 . An electroluminescent device comprising Use of the blue luminescent compound according to claim 1 .
4 . An organic electroluminescent device, characterized by comprising an anode, a hole transport region, a luminescent layer, an electron transport region, and a cathode, which are sequentially arranged on a substrate plate, wherein the luminescent layer comprises the blue luminescent compound according to claim 1 .
5 . An organic electroluminescent device, characterized by comprising an anode, a hole transport region, a luminescent layer, an electron transport region, and a cathode, which are sequentially arranged on a substrate plate, wherein the luminescent layer comprises a blue luminescent compound, characterized in that the blue luminescent compound is selected from one of the following structures:
wherein in the above structures, any oxygen can be replaced by 17 O or 18 O, and any carbon can be replaced by 13 C, and
the organic electroluminescent device is further characterized in that the luminescent layer comprises a host material and a guest material, wherein the host material comprises at least the blue luminescent compound.
6 . A display device, characterized by comprising the organic electroluminescent device according to claim 4 .
7 . A lighting device, characterized by comprising the organic electroluminescent device according to claim 4 .
8 . An electroluminescent device comprising Use of the blue luminescent composition according to claim 2 .
9 . An organic electroluminescent device, characterized by comprising an anode, a hole transport region, a luminescent layer, an electron transport region, and a cathode, which are sequentially arranged on a substrate plate, wherein the luminescent layer comprises the blue luminescent composition according to claim 2 .
10 . A display device, characterized by comprising the organic electroluminescent device according to claim 5 .
11 . A lighting device, characterized by comprising the organic electroluminescent device according to claim 5 .
12 . An organic electroluminescent device, characterized by comprising an anode, a hole transport region, a luminescent layer, an electron transport region, and a cathode, which are sequentially arranged on a substrate plate, wherein the luminescent layer comprises a blue luminescent composition, characterized in that the composition comprises two or more blue luminescent compounds, each blue luminescent compound characterized in that the blue luminescent compound is selected from one of the following structures:
wherein the organic electroluminescent device is further characterized in that the luminescent layer comprises a host material and a guest material, wherein the host material comprises at least the blue luminescent composition.
13 . A display device, characterized by comprising the organic electroluminescent device according to claim 12 .
14 . A lighting device, characterized by comprising the organic electroluminescent device according to claim 12 .