FIG. 1: Real (a) and imaginary (b) parts of the complex Young´s modulus of silanated Gelsil (4.8 nm) filled with salol (filling fraction f = 0 . 87 ) measured in three point bending geometry (Diamond DMA). 1Hz signal are original data, other signals are offset for sake of clarity. 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 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: 8 Y $^{′′}$( T ) = Δ Y · sin [ γ · arctan ( ωτ ( T ))] [1 + ω $^{2}$τ ( T ) $^{2}$] γ 2 (3b) Y $^{′}$( T ) = 1 − Δ Y · cos [ γ · arctan ( ωτ ( T ))] [1 + ω $^{2}$τ ( T ) $^{2}$] γ 2 (3a) 0 0.5 1 1.5 2 2.5 3 Y'' (GPa)$^{10}$ 15 20 25 30 Y' (GPa) 180 200 220 240 260 T (K) 180 200 220 240 260 T (K) 1 Hz 3 Hz 5 Hz 10 Hz 20 Hz 40 Hz 67 Hz 100 Hz Gelsil 4.8 nm silanated + salol (a) 1 Hz 3 Hz 5 Hz 10 Hz 20 Hz 40 Hz 67 Hz 100 Hz (b)