INCORPORATION OF A RUTHENIUM-RHODIUM DYAD IN MONOLAYERS AT THE GAS WATER INTERFACE/

Organized monolayers with the water soluble metal complex dyad ipy)(2) -(Mebipy-CH2-CH2-Mebipy)-Ru-II(phen)(2)(5+) have been formed at the ai r/water-interface by cospreading with stearic acid as lipid anchor. Fr om the surface pressure/area isotherms it is concluded that the dyad i s kept at the air/water interface by interaction with the stearic acid . According to the reflection spectra of the mixed monolayers of the d yad cospread with stearic acid, no loss of the dyad into the aqueous s ubphase is observed with increasing surface pressure. A structural mod el with two coexisting phases is proposed, one of which consists of st earic acid with dense-packed dyad molecules underneath, the second pha se being composed of stearic acid and a multilayer of dyad underneath.