The mechanism of charge transfer salt formation in the LB films of BEDO-TTF and fatty acid

The mixed valence state formation in a metallic Langmuir film on the water surface is reported. The mixing molecular system of BEDO-TTF (BO) and stear ic acid (SA) forms a bilayer film, where a SA layer is lying on the BO laye r, on the water surface. The polarization-modulated IR reflection absorptio n spectroscopy (PM-IRRAS) reveals a metallic optical property in the BO lay er described by Drude model. Hydrogen bonding (R-COOHOOC-R)(-) anions in th e SA layer are suggested by the comparison of IR spectrum of carboxylic sal t of BEDT-TTF.