92
D. Makieła et al.
Fig. 6.2 The instantaneous configuration of the reverse micelle formed from 58 DMPC and filled
with water molecules, T = 300 K (VMD software [35] snapshot)
We also calculated the corresponding
→
r (t)
2
(see Fig. 6.5) and the diffusion
coefficients D (Table 6.1) for bulk (unconfined) water.
In the comparison of
→
r (t)
2
plots presented in Figs. 6.4 and 6.5, as well
as the values of D coefficients from Table 6.1, one realizes the very substantial
difference between dynamics of water molecules confined in reverse micelle and
that in a bulk sample.
For all studied systems, the thermal activation of translational diffusion can be
well described by Arrhenius law:
D = D 0 exp
E A
K B T
,