Plurality of host materials and organic electroluminescent device comprising the same

A plurality of host materials comprising a first host material comprising a compound represented by the following formula 1, and a second host material comprising a compound represented by the following formula 2:

• wherein
• Ar1 and Ar2, each independently, represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
• L1 represents a substituted or unsubstituted (C6-C30)arylene;
• R11 and R12, each independently, represent hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl(C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (C1-C30)alkyl(C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, 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;
• and
• p and q, each independently, represent an integer of 1 to 4, where if p and q are an integer equal to 2 or more, each of R11 and each of R12 may be the same or different;
• wherein
• HAr represents a substituted triazinyl, in which at least one of the substituents of the substituted triazinyl may be a naphthyl, a biphenyl, a terphenyl, a naphthylphenyl, a naphthyl substituted with deuterium, or a phenylnaphthyl;
• L2 represents a naphthylene unsubstituted or substituted with deuterium;
• and
• R1 to R8, each independently, represent hydrogen, deuterium, or a (C6-C30)aryl unsubstituted or substituted with deuterium.