The conformational entropy S and free energy F were calculated by exact enumeration of polysilane chain up to 23segments with excluded volume (EV) and long-range van der Waals (VW) interaction. A nonlinear relation between SEV+VWand chain length n was found though SEV was found to vary linearly with n. We found that the second-order transitiontemperature of polysilane chain with VW interaction increases with the increase of chain length
while that of polysilanechain without VW interaction is chain length independent.Moreover
the free energies FEV+VW are both linearly related with n
and FEV+VW FEV for all temperatures.
Abstract
The conformational entropy S and free energy F were calculated by exact enumeration of polysilane chain up to 23segments with excluded volume (EV) and long-range van der Waals (VW) interaction. A nonlinear relation between SEV+VWand chain length n was found though SEV was found to vary linearly with n. We found that the second-order transitiontemperature of polysilane chain with VW interaction increases with the increase of chain length
while that of polysilanechain without VW interaction is chain length independent.Moreover
the free energies FEV+VW are both linearly related with n
and FEV+VW FEV for all temperatures.
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