Preparation and characterization of C sub(60) and C sub(60)phthalocyanine derivative alternate-layer Langmuir-Blodgett films

The monolayer of C sub(60) mixed with arachidic acid (AA) on a water subphase is deposited on different substrates such as Si, GaAs single crystals and CaF sub(2), SiO sub(2) plates by the Langmuir-Blodgett (LB) technique. The position of AA molecules is determined at the vacancy of C sub(60) molecules from measuring the pi -A isotherms of C sub(60) and AA monolayers, separately. According to previous work, C sub(60) and copper tetra-4-(2,4-di-t-amylphenoxy) phthalocyanine (CuPc) alternate-layer LB film is deposited on different substrates. Obvious change in the UV-Vis absorption spectra of C sub(60)/CuPc alternate film is not observed, compared with C sub(60) and CuPc LB films.