Plurality of host materials and organic electroluminescent device comprising the same

An organic electroluminescent compound represented by the following formula 1:

• wherein
• L1 and L2, each independently, represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
• Ar1 and Ar2, each independently, represent a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, an amino, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino;
• A and B, each independently, represent a benzene ring or a naphthalene ring, with the proviso that at least one of A and B represents a naphthalene ring;
• R1 to R3, each independently, represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30)alkenyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino;
• or each of R1 to R3 may be linked to each other to form a substituted or unsubstituted (3- to 30-membered) mono- or polycyclic ring;
• a represents an integer of 1 to 4, when A represents a benzene ring;
• or a represents an integer of 1 to 6, when A represents a naphthalene ring;
• b represents 1 or 2, when B represents a benzene ring;
• or b represents an integer of 1 to 4, when B represents a naphthalene ring;
• c represents an integer of 1 to 4;
• and
• where if a to c, each independently, are an integer of 2 or more, each of R1 to R3 may be the same or different;
• and