Nitrogen-containing compound, organic electroluminescent device and electronic apparatus

A nitrogen-containing compound, having a structure represented by a Formula 1:

• wherein R1 is selected from a hydrogen, a deuterium, an aryl with 6 to 12 carbon atoms or a deuteroaryl with 6 to 12 carbon atoms;
• A is selected from groups represented by a Formula 1-1;
• R2 is selected from a hydrogen, a deuterium, an aryl with 6 to 12 carbon atoms or a deuteroaryl with 6 to 12 carbon atoms, and at least one of R1 and R2 is selected from an aryl with 6 to 12 carbon atoms or a deuteroaryl with 6 to 12 carbon atoms;
• or, A is selected from groups represented by a Formula 1-2;
• R3 is selected from a hydrogen, a deuterium, an aryl with 6 to 12 carbon atoms or a deuteroaryl with 6 to 12 carbon atoms, and at least one of R1 and R3 is selected from an aryl with 6 to 12 carbon atoms or a deuteroaryl with 6 to 12 carbon atoms;
• each R4, each R5, each R6 and each R7 are the same or different, and are respectively and independently selected from a deuterium, an aryl with 6 to 12 carbon atoms or a deuteroaryl with 6 to 12 carbon atoms;
• n4 is the number of R4, and is selected from 0, 1, 2, 3, 4, 5, 6 or 7, and in the case where n4 is greater than 1, each R4 is the same or different;
• n5 is the number of R5, and is selected from 0, 1, 2, 3, 4, 5, 6 or 7, and in the case where n5 is greater than 1, each R5 is the same or different;
• no is the number of R6, and is selected from 0, 1, 2, 3, 4, 5, 6 or 7, and in the case where no is greater than 1, each R6 is the same or different;
• n7 is the number of R7, and is selected from 0, 1, 2, 3, 4, 5 or 6, and in the case where n7 is greater than 1, each R7 is the same or different;
• L is selected from a substituted or unsubstituted arylene with 6 to 12 carbon atoms;
• substituent(s) of L are the same or different, and are respectively and independently selected from a deuterium, a phenyl or a pentadeuterophenyl;
• Ar1 is selected from a substituted or unsubstituted aryl with 6 to 30 carbon atoms;
• and
• substituent(s) of Ar1 are the same or different, and are respectively and independently selected from a deuterium, a halogen group, a cyano, an alkyl with 1 to 10 carbon atoms, a cycloalkyl with 3 to 10 carbon atoms, an aryl with 6 to 12 carbon atoms, a deuteroaryl with 6 to 12 carbon atoms, or a haloaryl with 6 to 12 carbon atoms.