Studies of LB films of amphiphilic complexes with 8-hydroxyquinoline and their electroluminescent devices

The LB films of ten amphiphilic complexes of N-hexadecyl-8-hydroxy-2-quinol inecarboxamide were deposited and their properties and structure were chara cterized by pi-A isotherms and low-angle X-ray diffraction analysis. The mo lecular areas per complex are (1.25 +/- 0.06)nm(2) and (0.74 +/- 0.06) nm2, which correspond to the change of the orientation of complex in the monola yer. These LB films are oriented in superlattic structure. The height of th e bilayer LB films is about (5.0 +/- 0.1)nm, Anisotropy of conductivity was observed in the LB films. The in plane conductivity of these LB films on q uartz substrate and the vertical conductivity on ITO glass have been determ ined to be ca, 10(-5)S m(-1) and 10(-9)S m(-1), respectively. These LB film s have intense fluorescent emission and were used as the emitter material i n the electroluminescent del ice. The electroluminescent devices with a sin gle layer structure was constructed using LaL2(H2O)(4)Cl as the emitter mat erial. Green-yellow electroluminescence was observed with brightness of ca. 330 cd/m(2) and a low drive voltage of 9 V.