Abstract

A linear response theory is presented for the long-range solvent effect on the nπ* circular dichroism spectra of long helical polypeptides. A time dependent Hartree approximation that includes intrapolymer electrostatic field effects is employed. Periodic boundary conditions are used to describe the polymer while the solvent is considered to be a polarizable isotropic continuum. For an α-helical system in water the solvent is predicted to cause a 23% decrease in the nπ* rotational strengths.

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