The LB films of a novel Amphiphilic porphyrine-viologen compound were deposited on various slids (glass, silicon, graphite) and their structures were studied by π-A isotherm analysis, UV-absorption spectra, little and low angle X-ray diffraction and STM. The results showed that the LB films are oriented in superlattic structure. The molecular area, monolayer high are 1.15nm^2, 2.35nm respectively, the distance between agjacent rows is 1.07nm. The well oriented LB films showed higher light quantum photon yields and good photoelectric on-off characteristy.

Key words: VIOLOGENS, X-RAY DIFFRACTION ANALYSIS, PHOTOELECTRICAL PROPERTIES, PORPHYRIN, L-B MEMBRANE