Material for phenanthrene derivatives and organic el element

Phenanthrene derivatives characterized by being represented by the following formula (1). In the formula L is a single bond, a substituted or non-substituted, benzene skeleton, naphthalene skeleton, biphenylene skeleton, fluorene skeleton, phenanthrene skeleton, fluoranthene skeleton, triphenylene skeleton, chrysene skeleton, phenyl - show a naphthalene skeleton or binaphthylene skeleton. R yd, n, l and p represents 0 or 1, and m + n + l + p ≧ 1 (m, n ≧ l, p). a and b is an integer of 0 or more and 8 or less.