Abstract
A linear response theory is presented for the long-range solvent effect on the ππ* circular dichroism spectra of long helical polypeptides. A time dependent Hartree approximation and a partitioning technique is employed to obtain susceptibilities. Periodic boundary conditions are used to describe the polymer while the solvent is considered to be a polarizable isotropic continuum. The results of the theory are discussed in the context of applying it to an α-helical polypeptide in water. The theory is also compared to a less accurate scheme, a matrix method.
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