COMPOUND, METHOD FOR PREPARING COMPOUND AND ORGANIC LIGHT EMITTING DISPLAY DEVICE
The present disclosure relates to the technical field of light emitting materials, in particular to a compound, a method for preparing the compound and an organic light emitting display device. The compound has the following structure: The compound is used in an organic electroluminescent device, can also be used as a host material, a doping material, a hole transport layer material, an electron transport layer material and a cap layer material, can reduce a driving power. This compound can improve a luminous efficiency, brightness, heat stability, color purity and device lifetime.
1 . A compound, having a structure illustrated by [chemical formula 1]:
[chemical formula 1] is
wherein D represents an electron donor unit, each of X 1 -X 9 is independently selected from a carbon atom or a nitrogen atom, at least one of X 3 and X 4 is a nitrogen atom, at least one of X 6 and X 7 is a nitrogen atom, each of a and b in the subscripts is independently selected from 0 or 1, and each of A 1 and A 2 is independently selected from a group consisting of a substituted or an unsubstituted C 1 -C 20 alkyl, a substituted or an unsubstituted C 3 -C 20 cycloalkyl, a substituted or an unsubstituted C 1 -C 20 alkoxy, a substituted or an unsubstituted C 3 -C 20 heterocyclic, a substituted or an unsubstituted C 6 -C 40 aryl, a substituted or an unsubstituted C 10 -C 40 fused aromatic group, and a substituted or an unsubstituted C 4 -C 40 heteroaryl.
2 . The compound according to claim 1 , wherein X 3 and X 6 are same groups, X 4 and X 7 are same groups, X 1 and X 8 are same groups and X 2 and X 9 are same groups.
3 . The compound according to claim 1 , wherein the compound is selected from one of following:
wherein D represents an electron donor unit, X 5 is selected from a carbon or a nitrogen atom, each of a and b in the subscripts is independently selected from 0 or 1, and each of A 1 and A 2 is independently selected from a group consisting of a substituted or an unsubstituted C 1 -C 20 alkyl, a substituted or an unsubstituted C 3 -C 20 cycloalkyl, a substituted or an unsubstituted C 1 -C 20 alkoxy, a substituted or an unsubstituted C 3 -C 20 heterocyclic, a substituted or an unsubstituted C 6 -C 40 aryl, a substituted or an unsubstituted C 10 -C 40 fused aromatic group, and a substituted or an unsubstituted C 4 -C 40 heteroaryl.
4 . The compound according to claim 1 , wherein the unit D is selected from a group consisting of an anilino, an aniline derivative substituent, a carbazolyl, a carbazole derivative substituent, an acridinyl and an acridine derivative substituent.
5 . The compound according to claim 1 , wherein the unit D is selected from one of following:
wherein each of m, n and p in the subscripts is independently selected from 0, 1, 2 or 3; the symbol # represents a location of connection with the heteroaryl in [chemical formula 1]; and each of R 1 , R 2 and R 3 is independently selected from a group consisting of a hydrogen atom, a substituted or an unsubstituted C 1 -C 30 alkyl, a substituted or an unsubstituted silylene, a substituted or an unsubstituted C 1 -C 30 alkoxy, a substituted or an unsubstituted C 6 -C 30 aryl, and, a substituted or an unsubstituted C 10 -C 30 fused aromatic group.
6 . The compound according to claim 1 , wherein the unit D is selected from one of following:
wherein Z is selected from a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom or a silicon atom; each of q in the subscripts is independently selected from 0, 1, 2 or 3; the symbol # represents a location linked with the heteroaryl in [chemical formula 1]; and R 4 is independently selected from a group consisting of a hydrogen atom, a substituted or an unsubstituted C 1 -C 30 alkyl, a substituted or an unsubstituted silylene, a substituted or an unsubstituted C 1 -C 30 alkoxy, a substituted or an unsubstituted C 6 -C 30 aryl and a substituted or an unsubstituted C 10 -C 30 fused aromatic group.
7 . The compound according to claim 1 , wherein the unit D is selected from one of following:
wherein Z is selected from a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom or a silicon atom; X is selected from a group consisting of a carbon atom, a nitrogen atom, an oxygen atom and a sulfur atom; each of m, n, p and q in the subscripts is independently selected from 0, 1, 2 or 3; the symbol # represents a location linked with the heteroaryl in [chemical formula 1]; and each of R 1 , R 2 , R 3 and R 4 is independently selected from a group consisting of a hydrogen atom, a substituted or an unsubstituted C 1 -C 30 alkyl, a substituted or an unsubstituted silylene, a substituted or an unsubstituted C 1 -C 30 alkoxy, a substituted or an unsubstituted C 6 -C 30 aryl and a substituted or an unsubstituted C 10 -C 30 fused aromatic group.
8 . The compound according to claim 1 , wherein the unit D is selected from one of following:
wherein R in each structural formula is independently selected from a group consisting of an hydrogen atom, a substituted or an unsubstituted C 1 -C 20 alkyl, a substituted or an unsubstituted C 3 -C 20 cycloalkyl, a substituted or an unsubstituted C 1 -C 20 alkoxy, a substituted or an unsubstituted C 3 -C 20 heterocyclic, a substituted or an unsubstituted C 6 -C 40 aryl and a substituted or an unsubstituted C 5 -C 40 heteroaryl, and the symbol # represents a location where unit D is able to connect with the heteroaryl in [chemical formula 1].
9 . The compound according to claim 1 , wherein the compound is selected from one of following chemical compounds:
10 . A method for preparing the compound according to claim 1 , comprising the following steps expressed with [chemical reaction formula 1] to [chemical reaction formula 4]:
step 1, activating a
step 2, reacting with an activated
and an activated
to obtain an intermediate I; wherein the intermediate I reacts with an activated group D to obtain an intermediate II; and wherein the intermediate II reacts with an activated A 1 and an activated A 2 to obtain the compound;
wherein
[chemical reaction formula 1] is
[chemical reaction formula 2] is
[chemical reaction formula 3] is
[chemical reaction formula 4] is
wherein Y and Z represent two different halogens, respectively, Y is selected from iodine or bromine, and Z is selected from bromine or chlorine.
11 . An organic light emitting display device, comprising an organic electroluminescent device,
wherein the organic electroluminescent device comprises an organic function layer;
wherein the organic function layer comprises one or more organic film layers;
wherein at least one of the organic film layers is a light emitting layer; and
wherein the organic function layer contains the compound according to claim 1 .
12 . The organic light emitting display device according to claim 11 , wherein a phosphorescent host material of the light emitting layer contains the compound.
13 . The organic light emitting display device according to claim 11 , wherein a doping material of the light emitting layer contains the compound.
14 . The organic light emitting display device according to claim 11 , wherein the organic function layer further comprises an electron transport layer and a material of the electron transport layer contains the compound.
15 . The organic light emitting display device according to claim 11 , wherein the organic function layer further comprises a hole transport layer and a material of the hole transport layer contains the compound.
16 . The organic light emitting display device according to claim 11 , wherein the organic function layer further comprises a cap layer and a material of the cap layer contains the compound.
17 . The organic light emitting display device according to claim 11 , wherein the organic electroluminescent device further comprises a first electrode and a second electrode over the organic function layer, and the organic function layer is over the first electrode.