The metal complexes chelated with N-naphthalenyl aminomethyl phenol were synthesized and the beryllium complex was applied to the organic electroluminescent devices as a blue light-emitting layer. Emission wavelength was observed at 406 nm in luminescence spectra for this complex. Its ionization potential (IP), electron affinity (EA) and band gap were investigated with cyclic voltammetry and found to be consistent with their UV-vis absoption spectral data.