Jl. Gebicki et P. Bednarek, Electron processes in AOT reverse micelles. Part 2. Influence of oil phase. Pulse radiolysis study, J MOL STRUC, 555, 2000, pp. 227-234
Reverse micellar systems formed of AOT, i.e. sodium bis(2-ethyl-1-hexyl) su
lfo-succinate, in different hydrocarbons, without water, dry micelles, and
in the presence of water, wet micelles, have been studied by means of pulse
radiolysis. Different localization sites of hydrated electron within wet r
everse micelle including a triad e(aq)(-)/Na+/SO3-. (absorption band peakin
g around 610 nm) are proposed and discussed to explain the influence of the
ratio [water]/[AOT] and of the kind of alkane on the position and half-wid
th of the absorption spectrum of the hydrated electron. Sulfite radical, ne
cessary to form such triad, is released as a result of electron interaction
with AOT molecule within reverse micelles (RM) containing water. A product
of direct electron attachment to AOT molecule, AOT radical anion, has been
observed spectrophotometrically only in dry AOT RM at ambient temperature
(absorption band peaking around 330 nm). (C) 2000 Elsevier Science B.V. All
rights reserved.