Organic compound, organic electroluminescent device and electronic apparatus thereof

An organic compound with a structure shown in formula 1:

• wherein R5 and R6 are the same or different, and are each independently selected from the group consisting of alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, cycloalkyl with 3 to 10 carbon atoms, substituted or unsubstituted aryl with 6 to 15 carbon atoms, and substituted or unsubstituted heteroaryl with 3 to 12 carbon atoms;
• or R5 and R6 are optionally connected to form a 5- to 18-membered aliphatic ring or a substituted or unsubstituted 5- to 18-membered aromatic ring together with the carbon atom to which they are jointly connected, and a substituent on the 5- to 18-membered aromatic ring is selected from the group consisting of deuterium, halogen, and alkyl with 1 to 6 carbon atoms;
• R1, R2, R3, and R4 are the same or different, and are each independently selected from the group consisting of a group shown in formula 2, aryl with 6 to 20 carbon atoms, heteroaryl with 3 to 20 carbon atoms, hydrogen, deuterium, halogen, cyano, alkyl with 1 to 10 carbon atoms, haloalkyl with 1 to 10 carbon atoms, deuterated alkyl with 1 to 10 carbon atoms, alkoxy with 1 to 10 carbon atoms, cycloalkyl with 3 to 10 carbon atoms, and trialkylsilyl with 3 to 12 carbon atoms, and any one or two of R1, R2, R3, and R4 are the group shown in formula 2,
• wherein Het is electron-deficient 6- to 18-membered nitrogen-containing heteroarylene;
• L1, L2, and L3 are each independently selected from the group consisting of a single bond, substituted or unsubstituted arylene with 6 to 30 carbon atoms, and substituted or unsubstituted heteroarylene with 3 to 30 carbon atoms;
• Ar1 and Ar2 are the same or different, and are each independently selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted aryl with 6 to 30 carbon atoms, and substituted or unsubstituted heteroaryl with 3 to 30 carbon atoms;
• n1 and n4 are the same or different, represent a number of R1 and a number of R4 respectively, and are each independently selected from the group consisting of 1, 2, 3, and 4;
• n3 represents a number of R3 and is selected from the group consisting of 1 and 2;
• and n2 represents a number of R2 and is selected from the group consisting of 1, 2, and 3;
• substituents in L1, L2, L3, Ar1, Ar2, R5, and R6 are the same or different, and are each independently selected from the group consisting of deuterium, cyano, halogen, alkyl with 1 to 10 carbon atoms, haloalkyl with 1 to 10 carbon atoms, deuterated alkyl with 1 to 10 carbon atoms, cycloalkyl with 3 to 10 carbon atoms, aryl with 6 to 20 carbon atoms, heteroaryl with 3 to 20 carbon atoms, alkoxy with 1 to 10 carbon atoms, alkylthio with 1 to 10 carbon atoms, trialkylsilyl with 1 to 12 carbon atoms, arylsilyl with 6 to 18 carbon atoms, aryloxy with 6 to 20 carbon atoms, and arylthio with 6 to 20 carbon atoms;
• and
• optionally, in Ar1 and Ar2, any two adjacent substituents connected to form a substituted or unsubstituted 5- to 15-membered ring, and a substituent on the 5 to 15-membered ring is independently selected from the group consisting of deuterium, cyano, halogen, alkyl with 1 to 4 carbon atoms, haloalkyl with 1 to 4 carbon atoms, deuterated alkyl with 1 to 4 carbon atoms, trialkylsilyl with 3 to 6 carbon atoms, aryl with 6 to 12 carbon atoms, and heteroaryl with 5 to 12 carbon atoms.