content_image/333130.jpg content_image/333129.jpg content_image/333128.jpg
<img src='content_image/333130.jpg'>

with ω = 2 πν , ν being the measurement frequency, and the broadening parameter [41] γ . Separating real and imaginary part of Y ∗ = Y ′ + iY ′′ leads to 

<img src='content_image/333129.jpg'>

<img src='content_image/333128.jpg'>

Eqs. (3a,b) and Eq. (1) are used to fit the data given in Figs. 1 and 2. We point out that the pore radius R = d/ 2 enters as a fitparameter in the pore size dependence of the Vogel-Fulcher temperature T$_{0}$ ( d $_{)}$. Fits and corresponding parameters are shown in Fig. 3 and Tab. II, respectively. 

Silanation causes two main effects on the dynamics of the molecules within the pores: 

