Eleven amphiphilic complexes of 2-(N-hexadecylcarbamoyl)-8-hydroxy quinoline (HL), ML2 (M = Mg, Ca, Mn, Co, Ni, Zn, Cd, Pb), ML2Cl (M = La, Er) and AlL2OH form a stable monolayer on pure water subphase and can be easily fabricated as highly ordered LB films. Absorption and fluorescent spectra showed that the LB films were J-aggregates. Low-angle X-ray diffraction measurements showed these LB films had good homogeneity with a bilayer spacing of ca. 4.86-5.13 nm. These LB films exhibited intense fluorescence and were used as emitting material of electroluminescent devices. The deposited surface pressure of the LB films had a strong influence on the EL intensity.