Compound, display panel, and display apparatus
A compound having a structure shown in Chemical Formula 1 is described. In an embodiment, Ar is C6-C20 aryl or C5-C20 heteroaryl; D 1 and D 2 are electron-donating groups, A 1 and A 2 are electron-accepting groups, and m, n, p and q are 1, 2, or 3; D 1 and D 2 are a substituted or unsubstituted C1-C20 alkyl, a substituted or unsubstituted C3-C20 cycloalkyl, a substituted or unsubstituted C1-C20 alkoxy, a substituted or unsubstituted C3-C20 heterocyclic group, a substituted or unsubstituted C6-C40 aryl, a substituted or unsubstituted C4-C40 heteroaryl, a substituted or unsubstituted C10-C60 fused aryl, a substituted or unsubstituted C10-C60 fused heteroaryl, a substituted or unsubstituted C12-C40 carbazolyl, a substituted or unsubstituted C12-C40 diphenylamino group, or a C13-C40 acridinyl; and A 1 and A 2 are each a nitrogen-containing heterocyclic group, a cyano-containing group, a carbonyl-containing group, a sulfone-based group, and a phosphoroso-containing group.
1. A compound, having a structure according to Chemical Formula 1:
wherein;
wherein A 1 and A 2 are identical, and D 1 and D2 are identical; and
wherein D 1 and D2 are each independently selected from the group consisting of the following groups:
wherein # represents a bonding position in the Chemical Formula 1, and
R represents a C1-C20 alkyl group, a C1-C20 alkoxy group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, a C6-C40 aromatic group, or a C4-C40 heteroaryl group; and
wherein A 1 and A 2 are each a cyano-containing group, and wherein the cyano-containing group is selected from the group consisting of the following groups:
wherein # represents a bonding position in the Chemical Formula 1.
2. The compound according to claim 1 , wherein the compound is selected from the group consisting of the following compounds:
3. The compound according to claim 1 , wherein an energy level difference between a lowest singlet energy level S1 and a lowest triplet energy level T1 of the compound satisfies: ΔE ST =E S1 −E T1 ≤0.30 eV.
4. A display panel, comprising an organic light-emitting device, wherein the organic light-emitting device comprises an anode, a cathode disposed opposite to the anode, and a light-emitting layer disposed between the anode and the cathode, wherein a light-emitting material of the light-emitting layer comprises a host material and a guest material, and the guest material or the host material is one or more compounds according to claim 1 .
5. A display apparatus, comprising the display panel according to claim 4 .