Organic electroluminescent compound and organic electroluminescent device

An organic electroluminescent compound represented by the following Formula 1:

• wherein in Formula 1,
• ring A represents a substituted or unsubstituted benzene, a substituted or unsubstituted naphthalene, or a substituted or unsubstituted phenanthrene;
• Ar1 and Ar2 each independently represent a substituted or unsubstituted (C2-C30)alkyl;
• R and R1 to R4 each independently represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or a substituted or unsubstituted (C1-C30)alkoxy, or may be linked to an adjacent substituent(s) to form a ring(s);
• with a proviso that at least one of R and R1 to R4 is represented by -L1-NAr3Ar4;
• L1 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
• Ar3 and Ar4 each independently represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
• and
• n represents an integer of 1 to 8, if n is plural, each of n may be the same as or different from each other.

The organic electroluminescent compound represented by the following Formula 3:

• wherein in Formula 3,
• at least one of Ra to Rj is represented by the following Formula 3-1;
• wherein in Formula 3 and Formula 3-1,
• Ra to Rm each independently represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
• represents the bond between Formula 3 and Formula 3-1;
• L6 to L8 each independently represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
• Ar8 represents a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (C3-C30)cycloalkyl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
• k and l each independently represent an integer of 1 to 5, m represents an integer of 1 to 3;
• and
• if k to m represent an integer of 2 or more, each of Rk to Rm may be the same as or different from each other.