Generation of the C 60 radical cation via electron transfer reaction. A pulse radiolysis study

Abstract

Using pulse radiolysis techniques the C 60 radical cation has been generated for the first time via electron transfer from the triplet state of C 60 to CCl 4 or CCl 3CF 3. The radiation-induced electron transfer rate constant was determined to be 7.8 × 10 6 M −1 s −1. A novel transient absorption peak at 650 nm of the C 60 cation was observed from pulse radiolysis of benzene containing C 60 and CCl 4 or CCl 3CF 3. The extinction coefficient of the C 60 cation at 650 nm was estimated to be ⩾ 4.6 × 10 3 M −1 cm −1.