Abstract
Fullerene C60 was dissolved in toluene-water mixture under sonochemical activation, and after toluene evaporation a stable aqueous solution remained. The problem of C60 stability in aqueous medium was studied by means of polarization modulation infrared reflection adsorption spectroscopy (PM IRRAS), time-of-flight secondary ion mass spectrometry (TOF SIMS) and atomic force microscopy/scanning tunneling microscopy (AFM/STM) techniques. It was found that C60 clusters are in the aqueous solution stabilized by the presence of thin layer of methylbenzoate produced during sonication.
Acknowledgment
This work was supported by the Grant Agency of the Czech Republic (203/09/P502, 203/09/1607, 203/08/1157 and 203/09/0705), by the Academy of Sciences of the Czech Republic (contracts IAA 400400804 and KAN 200100801).