Compound, a display panel and a display device
The present invention relates to a compound, a display panel and a display device. The compound has a structure represented by Formula I. The compound takes a spiro structure as a non-conjugated connecting unit, and a boron-containing group as an electron-accepting group. A light-emitting compound obtained by taking the group as a building block has a narrower half-peak width and higher color purity. The boron-containing spiro structure is connected with an electron-donating group to obtain a bipolar compound, and as a thermal activation delay fluorescence material, the bipolar compound can be used a light-emitting layer material, particularly a doped material, and can also be used as a fluorescent host material or a phosphorescent host material. The compound provided herein can achieve low drive voltages and high luminescence efficiencies when applied to organic electroluminescent devices.
1. A compound, having a structure represented by Formula I:
wherein m and n are each independently an integer selected from 1 to 4;
in Formula I, D 1 and D 2 are each independently selected from any one of a substituted or unsubstituted C12-C40 carbazole group, a substituted or unsubstituted C12-C40 acridine group, a substituted or unsubstituted C12-C40 arylamine group, a substituted or unsubstituted fluorenyl, or a substituted or unsubstituted spirofluorenyl;
in Formula I, Ar 1 and Ar 2 are each independently selected from a C1-C20 alkyl, a C1-C20 alkoxy, or a substituted or unsubstituted C6-C40 aryl;
in Formula I, X1 and X2 are each independently selected from any one of an oxygen atom, a sulfur atom,
wherein #represents a linking bond;
R is selected from a C1-C20 alkyl, a C1-C20 alkoxy, or a substituted or unsubstituted C6-C40 aryl;
in D 1 , D 2 , Ar 1 , Ar 2 and R, substituent is selected from any one or a combination of at least two of a cyano, a halogen, a phenoxy, a C1-C20 alkyl, a C1-C20 alkoxy, a C6-C40 aryl, a C4-C40 heteroaryl, or a C6-C40 arylamine group.
2. The compound according to claim 1 , wherein the compound has a structure represented by Formula II:
wherein D 1 , D 2 , Ar 1 , Ar 2 , X 1 and X 2 each has the same range as defined in claim 1 .
3. The compound according to claim 1 , wherein the compound has a structure represented by Formula III:
wherein D 1 , D 2 , Ar 1 , Ar 2 , X 1 and X 2 each has the same range as defined in claim 1 .
4. The compound according to claim 1 , wherein the substituted or unsubstituted C12-C40 carbazole group comprises any one of the following groups:
wherein X is selected from a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom or a silicon atom; r and s are each independently selected from 0, 1, 2 or 3; when X is an oxygen atom or a sulfur atom, R 3 does not exist;
R 1 , R 2 , R 3 and R 4 are each independently selected from any one of a hydrogen atom, a C1-C20 alkyl, a C1-C20 alkoxy or any one of groups represented be the following chemical formula:
R 5 , R 6 , R 7 and R 8 are each independently selected from any one of a hydrogen atom, a C1-C20 alkyl, a C1-C20 alkoxy or a phenyl;
u and v are each independently selected from 0, 1, 2 or 3;
#represents a linking bond.
5. The compound according to claim 1 , wherein the substituted or unsubstituted C12-C40 carbazole group comprises any one of the following substituted or unsubstituted groups:
R′ is selected from any one of a hydrogen atom, a substituted or unsubstituted C1-C20 alkyl, a substituted or unsubstituted C1-C20 alkoxy, a substituted or unsubstituted C6-C30 aryl, or a substituted or unsubstituted C3-C30 heteroaryl;
#represents a linking bond.
6. The compound according to claim 1 , wherein the substituted or unsubstituted C12-C40 acridine group comprises any one of the following groups:
wherein X and Y are each independently selected from a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom or a silicon atom; r, p and q are each independently selected from 0, 1, 2 or 3; when X is an oxygen atom or a sulfur atom, p is 0; and when Y is an oxygen atom or a sulfur atom, q is 0;
R 1 , R 2 and R 3 are each independently selected from any one of a hydrogen atom, a C1-C20 alkyl, a C1-C20 alkoxy or any one of groups represented by the following chemical formula:
R 5 , R 6 , R 7 and R 8 are each independently selected from any one of a hydrogen atom, a C1-C20 alkyl, a C1-C20 alkoxy or phenyl;
u and v are each independently selected from 0, 1, 2 or 3;
#represents a linking bond.
7. The compound according to claim 1 , wherein the substituted or unsubstituted C12-C40 acridine group comprises any one of the following substituted or unsubstituted groups:
R 9 is independently selected from any one of a hydrogen atom, a C1-C20 alkyl, a C1-C20 alkoxy or a phenyl;
#represents a linking bond.
8. The compound according to claim 1 , wherein the substituted or unsubstituted C12-C40 arylamine group comprises the following group:
wherein r and s are each independently selected from 0, 1, 2 or 3;
R 1 and R 2 are each independently selected from any one of a hydrogen atom, a C1-C20 alkyl, a C1-C20 alkoxy or any one of groups represented by the following chemical formula:
R 5 , R 6 , R 7 and R 8 are each independently selected from any one of a hydrogen atom, a C1-C20 alkyl, a C1-C20 alkoxy or a phenyl;
u and v are each independently selected from 0, 1, 2 or 3;
#represents a linking bond.
9. The compound according to claim 1 , wherein the substituted or unsubstituted C6-C40 arylamine group comprises any one of the following substituted or unsubstituted groups:
wherein #represents a linking bond.
10. The compound according to claim 1 , wherein Ar 1 and Ar 2 are each independently selected from any one of a C1-C12 alkyl, a C1-C12 alkoxy, a phenyl, a biphenyl, a naphthyl, an anthracenyl, phenanthryl or a pyrenyl.
11. The compound according to claim 1 , wherein R is selected from any one of a C1-C12 alkyl, a C1-C12 alkoxy, a phenyl, a biphenyl, a naphthyl, an anthracenyl, phenanthryl or a pyrenyl.
12. The compound according to claim 1 , wherein the compound has any one of the following structures represented by P001 to P096:
13. A display panel, comprising an organic light emitting diode (OLED) device, wherein the OLED device comprises an anode, a cathode and an organic thin film layer disposed between the anode and the cathode, wherein the organic thin film layer comprises a light-emitting layer;
wherein the light-emitting layer comprises the compound of claim 1 .
14. A display panel comprising an organic light emitting diode (OLED) device, wherein the OLED device comprises an anode, a cathode and an organic thin film layer disposed between the anode and the cathode, wherein the organic thin file layer comprises a light-emitting layer; and wherein the light emitting layer comprises the compound of claim 2 .
15. A display panel comprising an organic light emitting diode (OLED) device, wherein the OLED device comprises an anode, a cathode and an organic thin film layer disposed between the anode and the cathode, wherein the organic thin file layer comprises a light-emitting layer; and wherein the light-emitting layer comprises the compound of claim 3 .
16. The display panel according to claim 13 , wherein the compound of claim 1 is used as any one of a host material, a doped material or a co-doped material of the light-emitting layer.
17. A display device, comprising the display panel of claim 13 .