Pulse radiolysis of polystyrene in cyclohexane – Effect of carbon tetrachloride on kinetic dynamics of dimer radical cation−

The dependence of the kinetic dynamics of the polystyrene dimer radical cation ( Ph 2 + ) on the CCl4 concentration was investigated in a cyclohexane solution by nanosecond pulse radiolysis. A slow formation of ( Ph 2 + ) (k = 1.5 × 109 M−1 s−1) through electron transfer quenching of the polystyrene excimer was observed upon the addition of 10–100 mM CCl4. This electron transfer quenching led to an increase of the free ion yield (∼20%).