Theory of the Farhyphen;Ultraviolet Spectrum of Polypeptides in the bgr; Conformation

摘要

The electronic excited states in polypeptides of the bgr; conformation corresponding to the lowest energy pgr;mdash;pgr;*transition are derived from molecularhyphen;exciton theory. Transition energies are calculated in the monopolemdash;monopole approximation, and the results are compared with polarized film spectra obtained in the present study, as well as with experimental data of other investigators. It appears that either parallel sheets or mixtures of parallel and antiparallel sheets are present in polyhyphen;Lhyphen;lysine solutions and films.