The monolayers and LB films of BEDO-TTF . CF(3)TCNQ charge transfer (CT) co
mplex mixed with matrix molecule, arachidic acid, were prepared A strong CT
band was observed in the IR region due to the conduction electron. The ave
rage charges of the CF(3)TCNQ and BEDO-TTF in the LB film were -1 and +0.5,
respectively, determined from the shift of the bands in IR region. The LB
film showed a metal-like conductivity at around room temperature.