Compound, display panel and display device

A compound having the structure shown in Formula 1,

• A1 and A2 each independently represent -(L)n-R, where L each independently represents 6-membered to 60-membered divalent aryl unsubstituted or substituted by Ra or 5-membered to 60-membered divalent heteroaryl unsubstituted or substituted by Ra, R represents 6-membered to 60-membered monovalent aryl unsubstituted or substituted by Ra or 5-membered to 60-membered monovalent heteroaryl unsubstituted or substituted by Ra, and n represents 0, 1 or 2;
• R1, R2, R3, R4, R5, R6, and R7 each independently represent hydrogen, deuterium, tritium, a halogen atom or the following group unsubstituted or substituted by Ra:
• C1-C20 monovalent alkyl, C1-C20 monovalent alkoxy, C1-C20 monovalent alkylthio, C2-C20 monovalent alkenyl, C2-C20 monovalent alkynyl, 3-membered to 20-membered monovalent alcyl, 3-membered to 20-membered monovalent heteroalcyl, 6-membered to 40-membered monovalent aryl, or 5-membered to 40-membered monovalent heteroaryl;
• X1, X2, and X3 all represent S or O;
• and
• Ra represents deuterium, tritium, a halogen atom, cyano, nitro, carboxyl, carbonyl, amino, C1-C20 monovalent alkyl, C1-C20 monovalent alkoxy, C1-C20 monovalent alkylthio, C2-C20 monovalent alkenyl, C2-C20 monovalent alkynyl, 3-membered to 20-membered monovalent alcyl, 3-membered to 20-membered monovalent heteroalcyl, 6-membered to 40-membered monovalent aryl, or 5-membered to 40-membered monovalent heteroaryl, wherein one or more hydrogens of C1-C20 monovalent alkyl, C1-C20 monovalent alkoxy, C1-C20 monovalent alkylthio, C2-C20 monovalent alkenyl, C2-C20 monovalent alkynyl, 3-membered to 20-membered monovalent alcyl, 3-membered to 20-membered monovalent heteroalcyl, 6-membered to 40-membered monovalent aryl, or 5-membered to 40-membered monovalent heteroaryl each are independently replaced by deuterium, tritium, a halogen atom, cyano, nitro, carboxyl, carbonyl, or amino.