Fabrication, characterization and electrochemical behaviors of the orientated film of a C 60 derivative

Abstract

The ability of a C 60 derivative ( 1) to form Langmuir monolayer at air/water interface was investigated by using surface pressure vs. molecular area isotherm and Brewster angle microscopy (BAM). The monolayers were transferred on quartz, mica and ITO substrates with LB technique, respectively, and characterized using atomic force microscopy (AFM) and UV–vis spectra. These LB films were studied employing cyclic voltammetry in aqueous solutions of Fe(CN) 6 3−. The results show that a true monolayer of compound 1 is formed in the spreading process and that no three-dimensional aggregates are formed. The cyclic voltammetric behaviors show that the LB film of the C 60 derivative may exhibit some ionic charge-selective electron-transfer phenomena, implying that LB film of C 60 derivative bearing appropriate group may be used as electrode modifier.