Abstract
Intense (1.42 krad/min) γ-radiolysis of C60 dissolved in cyclohexane (weak magenta-colored solution) to a total dose of 51 krad resulted in the formation of a new compound (muddy red in color) with a solubility of more than 30 times that of saturated C60 in toluene. Low-power, laser desorption Fourier transform mass spectrometry (LD-FTMS) of the product yielded two ions at m/z = 1539 and 1556, which correspond to [C60(cyclohexane)10−xH]+ for x = 23 and 6, respectively. Higher power laser desorption conditions as well as collision-induced dissociation experiments of selected ions show the sequential loss of cyclohexene (C6H10) units. Small-angle X-ray scattering (SAXS) of the dissolved material supports the mass spectrometry results of cyclohexane additions to the sphere. Taken together, the mass spectrometry and SAXS data indicate that the identity of the γ-radiolysis products of C60 in cyclohexane most likely are cyclohexyl adducts of C60, primarily C60(cyclohexane)10. The SAXS data further indicate that...
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