COMPOUND, AND ORGANIC LIGHT-EMITTING ELEMENT, DISPLAY PANEL AND DISPLAY DEVICE INCLUDING THE SAME
Provided are a compound having a structure represented by Formula I, and an organic light-emitting element, a display panel and a display device including the same. The organic light-emitting element includes an anode, a cathode and an organic thin film disposed between the anode and the cathode; where the organic thin film includes any one or a combination of at least two of a light-emitting layer, an electron transport layer and a hole blocking layer, and includes at least the light-emitting layer, and at least one of the light-emitting layer, the electron transport layer or the hole blocking layer contains at least one of the compounds. The compound has a relatively deep LUMO energy level, a relatively deep HOMO energy level, a relatively high triplet energy level, a high electron mobility, a high T g , and good thermal and chemical stability, and is not easy to crystallize.
1 . A compound, having a structure represented by Formula I:
wherein L 1 and L 2 are each independently selected from any one of a single bond, substituted or unsubstituted C6 to C40 aryl or substituted or unsubstituted C3 to C40 heteroaryl;
A 1 and A 2 are each independently selected from any one of substituted or unsubstituted C6 to C40 aryl or substituted or unsubstituted C3 to C40 heteroaryl, and at least one of A 1 and A 2 is selected from any one of group
wherein # represents a position where the group is joined;
wherein X 1 , X 2 and X 3 are each independently a N atom or —CH, and at least one of X 1 , X 2 and X 3 is a N atom;
Ar 1 and Ar 2 are each independently selected from any one of substituted or unsubstituted C6 to C40 aryl or substituted or unsubstituted C3 to C40 heteroaryl; and
when a substituent is present in the above groups, the substituent is methyl, ethyl, isopropyl, t-butyl, methoxy, cyano, phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, carbazolyl, dibenzofuryl or dibenzothienyl.
2 . The compound according to claim 1 , having a structure represented by Formula II:
3 . The compound according to claim 1 , wherein L 1 and L 2 are each independently selected from any one of a single bond, phenylene, biphenylene, naphthylene, anthrylene, furylene, thienylene, pyridylene, pyrimidylene, triazinylene or fluorenylene.
4 . The compound according to claim 1 , wherein A 1 and A 2 are each independently selected from any one of phenyl, naphthyl, anthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl, spirofluorenyl or
and at least one of A 1 and A 2 is selected from any one of
5 . The compound according to claim 1 , wherein Ar 1 and Ar 2 are each independently selected from any one of phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or spirofluorenyl.
6 . The compound according to claim 1 , wherein the group
wherein # represents the position where the group is joined.
7 . The compound according to claim 2 , wherein L 1 and L 2 are each independently selected from any one of a single bond, phenylene, biphenylene, naphthylene, anthrylene, furylene, thienylene, pyridylene, pyrimidylene, triazinylene or fluorenylene.
8 . The compound according to claim 2 , wherein A 1 and A 2 are each independently selected from any one of phenyl, naphthyl, anthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl, spirofluorenyl or
and at least one of A 1 and A 2 is selected from any one of
9 . The compound according to claim 2 , wherein Ar 1 and Ar 2 are each independently selected from any one of phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or spirofluorenyl.
10 . The compound according to claim 2 , wherein the group
wherein # represents the position where the group is joined.
11 . The compound according to claim 2 , having a structure represented by Formula III or Formula IV:
wherein L 1 and L 2 are each independently selected from any one of a single bond, phenylene, biphenylene, naphthylene, anthrylene, furylene, thienylene, pyridylene, pyrimidylene, triazinylene or fluorenylene;
A 1 is selected from any one of phenyl, naphthyl, anthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl, spirofluorenyl,
and
Ar 1 and Ar 2 are each independently selected from any one of phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or spirofluorenyl.
12 . The compound according to claim 11 , having a structure represented by Formula IV;
wherein L 1 and L 2 are each independently a single bond, phenylene or naphthylene;
A 1 is selected from any one of phenyl, naphthyl, pyridyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or
Ar 1 and Ar 2 are each independently selected from any one of phenyl, biphenyl, pyridyl, dibenzofuryl, dibenzothienyl, carbazolyl or fluorenyl.
13 . The compound according to claim 1 , wherein the compound is selected from any one of following compounds H1 to H81:
14 . An organic light-emitting element, comprising an anode, a cathode and an organic thin film layer disposed between the anode and the cathode; wherein the organic thin film layer comprises any one or a combination of at least two of a light-emitting layer, an electron transport layer and a hole blocking layer, and comprises at least a light-emitting layer;
wherein at least one of the light-emitting layer, the electron transport layer or the hole blocking layer contains at least one of the compounds each according to claim 1 , wherein the compound having a structure of Formula I.
15 . The organic light-emitting element according to claim 14 , wherein the organic thin film layer further comprises any one or a combination of at least two of a hole injection layer, a hole transport layer, an electron blocking layer and an electron injection layer.
16 . The organic light-emitting element according to claim 14 , wherein the light-emitting layer comprises a host material and a light-emitting material, wherein the host material of the light-emitting layer comprises any one or a combination of at least two of the compounds each having a structure of Formula I.
17 . The organic light-emitting element according to claim 14 , wherein the electron transport layer comprises a material selected from any one or a combination of at least two of the compounds each having a structure of Formula I; or
the electron transport layer comprises a host material and a guest material, wherein the host material of the electron transport layer is selected from any one or a combination of at least two of the compounds each having a structure of Formula I.
18 . The organic light-emitting element according to claim 10 , wherein the hole blocking layer comprises a material selected from any one or a combination of at least two of the compounds each having a structure of Formula I, and the light-emitting layer comprises a light-emitting material having a lowest triplet energy level lower than the lowest triplet energy level of the compound.
19 . A display panel, comprising the organic light-emitting element according to claim 14 , wherein the display panel is optionally used in a display device.