Anthracene derivative having a phenanthryl group

An anthracene derivative comprising a phenanthryl group, the anthracene derivative being represented by formula (1-1):

• wherein:
• the phenanthryl group in formula (1-1) is one of a substituted or unsubstituted 2-phenanthryl group, and a substituted or unsubstituted 3-phenanthryl group,
• L1 represents a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted, divalent heterocyclic group having 5 to 50 ring-forming atoms;
• Ar1 represents a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms;
• substituents Ra and Rb each independently represent a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 carbon atoms, a substituted or unsubstituted alkoxyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 20 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50 ring-forming atoms, a substituted or unsubstituted alkylsilyl group having 1 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted alkylgermanium group having 1 to 50 carbon atoms, or a substituted or unsubstituted arylgermanium group having 6 to 50 ring-forming carbon atoms, provided that when L1 represents a group except a single bond, the substituent Rb represents a group except a substituted or unsubstituted anthracenyl group;
• “p” represents an integer of 0 to 8, and “q” represents an integer of 0 to 9, and when “p” represents 2 to 8, or “q” represents 2 to 9, a plurality of Ra's, or a plurality of Rb's may be identical to or different from each other, provided that when L1 represents a single bond, a case where all Ra, and Rb each represent an anthracenyl group is excluded.