In the title compound, C(38)H(30)N(2)O(2), the acenaphthyl-ene ring is close to being planar [maximum deviation = 0.1047 (11) Å]. The dihedral angles between the three benzene rings and the acenaphthyl-ene system are 39.47 (3), 37.65 (3) and 44.47 (3)°. An intra-molecular O-H⋯N inter-action forms an S(5) hydrogen-bond ring motif. In the crystal, mol-ecules are linked into [101] chains by a set of C-H⋯O inter-actions.