Nitrogen-containing compound, electronic element, and electronic device

A nitrogen-containing compound, having a structure as shown in a chemical formula 1:

• wherein
• represents a chemical bond;
• Ra and Rb are independently selected from hydrogen or a group shown in a chemical formula 1-1, and only one of Ra and Rb is the group shown in the chemical formula 1-1;
• L is selected from a single bond or the group consisting of the following groups:
• R1 is selected from deuterium, cyano, halogen group, substituted or unsubstituted alkyl with a total carbon atoms number of 1 to 6, substituted or unsubstituted aryl with a total carbon atoms number of 6 to 25, or substituted or unsubstituted heteroaryl with a total carbon atoms number of 5 to 12, and the R1 is not carbazolyl or N-phenylcarbazolyl;
• R2 is selected from deuterium, cyano, halogen group, alkyl with a total carbon atoms number of 1 to 6, substituted or unsubstituted aryl with a total carbon atoms number of 6 to 25, or substituted or unsubstituted heteroaryl with a total carbon atoms number of 5 to 18;
• and at least one of the R1 and the R2 is selected from substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
• n1 and n2 are the number of R1 and R2 respectively;
• n1 is selected from 0, 1, 2, 3 or 4, and when n1 is greater than 1, any two R1 are the same or different;
• n2 is selected from 0, 1, or 2, and when n2 is greater than 1, any two R2 are the same or different;
• n1+n2≥1;
• Ar1 and Ar2 are the same or different, and are independently selected from substituted or unsubstituted aryl with a total carbon atoms number of 6 to 30, or substituted or unsubstituted heteroaryl with a total carbon atoms number of 3 to 24, the Ar1 is not 9,9-diphenylfluorenyl, and the Ar2 is not 9,9-diphenylfluorenyl;
• and
• the substituents in the L, R1, R2, Ar1 and Ar2 are independently selected from deuterium, halogen group, cyano, heteroaryl with 3 to 20 carbon atoms, aryl with 6 to 20 carbon atoms which can be optionally substituted by 0, 1, 2, 3, 4 or 5 substituents selected from deuterium, fluorine, chlorine, cyano, methyl or tert-butyl, or alkyl with 1 to 10 carbon atoms;
• and the substituent in the R1 is not carbazolyl;
• and the nitrogen-containing compound is not: