LAUSR

Abstract The stability of fullerene C60 and Cu–C60 nanocomposite thin films are measured by exposing to gamma irradiation at different doses ranging from 25 kGy to 100 kGy. FTIR vibrational spectroscopy shows no effect of gamma irradiation on the fullerene C60 but gives a C C vibration at the highest dose of 100 kGy in Cu–C60 nanocomposite. The Raman spectroscopy was performed at two different wavelengths (325 nm and 532 nm) to know the structural transformation of fullerene and its nanocomposite thin film. At the wavelength of 532 nm, polymerization of fullerene molecules is observed in Cu–C60 nanocomposite thin film. UV–visible spectroscopy shows more prominent modes of fullerene C60 after gamma irradiation. Transmission electron microscopy is used to know the increase in particle size of the nanocomposite thin films. Contact angle measurements are also performed to know the wettability of the gamma irradiated samples. Finally, X-Ray photoelectron spectroscopy is performed to know the elemental state of these samples.