Phenanthrene derivative, and material for organic EL element

A phenanthrene compound, represented by a formula (1) below

• where Arl to Ar4 each represent an aromatic hydrocarbon ring group having 6 to 18 carbon atoms for forming the ring, the aromatic hydrocarbon ring group comprising none of anthracence skeleton, pyrene skeleton, aceanthrylene skeleton and naphthacene skeleton, wherein Ar1 to Ar4 are bonded in any positions of a phenanthrene skeleton;
• R1 and R2 each represent an alkyl group having 1 to 30 carbon atoms, cycloalkyl group having 3 to 30 carbon atoms, alkoxy group having 1 to 20 carbon atoms, cyano group, silyl group having 3 to 30 carbon atoms, halogen atom or aryl group having 6 to 30 carbon atoms, wherein R1 and R2 are bonded in any positions of the phenanthrene skeleton;
• L is bonded in the 2nd or 9th position of the phenanthrene skeleton and represents a single bond, a substituted or unsubstituted benzene skeleton, naphthalene skeleton, fluorene skeleton, fluoranthene skeleton, triphenylene skeleton, chrysene skeleton, phenyl-naphthalene skeleton, binaphthalene skeleton, benzophenanthrene skeleton, dibenzophenanthrene skeleton, benzotriphenylene skeleton, picene skeleton or benzo[b]fluoranthene skeleton, wherein, when L is a single bond, Ar1 and Ar2 represent an aromatic hydrocarbon ring group having 6 to 18 carbon atoms for forming the ring comprising none of phenanthrene skeleton, anthracene skeleton, pyrene skeleton, aceanthrylene skeleton, and naphthacene skeleton, Ar1 and Ar3 not simultaneously representing phenanthrene skeleton and Ar2 and Ar4 not simultaneously representing phenanthrene skeleton;
• a represents the number of substituents R1 directly bonded to a phenanthrene main chain;
• b represents the number of the substituents R2 directly bonded to a phenanthrene main chain;
• a and b each represent an integer of 0 to 8;
• m, n, l and p each represent 0 or 1 while satisfying m+n+l+p≧1 (m,n≧l,p);
• and
• a structure represented by a formula (1-X) below is excluded