. Author manuscript; available in PMC: 2009 Oct 22.

Published in final edited form as: J Am Chem Soc. 2008 Sep 30;130(42):13927–13937. doi: 10.1021/ja803252y

Table 4.

Biexponential fit parameters for the orientational relaxation r(t).

sample	A₁	τ_w (ps)	A₂	τ_l (ps)
x = 2	0.03	0.3	0.35	∞^*
x = 4	0.06	0.3	0.33	70^*
x = 6	0.07	0.4	0.32	30^*
x = 8	0.07	0.4	0.32	11
x = 16	0.05	0.4	0.32	5
bulk water			0.36	2.6

These values are so long compared to the time range over which they are measured that they should be taken to be very approximate. From the data and the fits, it is clear that x = 6 is slower than x = 8, and that x = 4 is slower still. For x = 2, following the initial fast decay, the data are horizontal within experimental error.