S. Adhikari et al., HYDRATED ELECTRONS IN A QUATERNARY MICROEMULSION SYSTEM - A PULSE-RADIOLYSIS STUDY, Journal of colloid and interface science, 191(1), 1997, pp. 268-271
Using the technique of pulse radiolysis, hydrated electrons have been
produced and studied in quaternary microemulsion (sodium lauryl sulfat
e (NaLS)/water/cyclohexane/1-pentanol) system. Remarkably high lifetim
es (similar to 20 mu s) for hydrated electrons have been obtained. In
general, these are two orders of magnitude higher than those reported
earlier in reverse micelles, The water droplet sizes and location of t
he probes have been determined from the decay kinetics of hydrated ele
ctrons. The yields and half-lives (t(1/2)) of the hydrated electrons v
ary smoothly as the water droplet sizes are changed. We believe that t
hese studies will be useful not only in interpreting electron transfer
reactions occurring in small water pockets in biological systems but
also in the production of metal nanoclusters by radiation chemical met
hod. (C) 1997 Academic Press.