*2.1. Materials*

All purchased chemicals were reagent grade and were used without further purification. The purchase of 2-chloroethyl phenyl sulfide was made at Sigma–Aldrich (St. Louis, MO, USA). Demeton-*S* was purchased from Chem Service (West Chester, PA, USA). Refined C60 fullerene was purchased from MER Corporation (Tucson, AZ, USA).
