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Description of the Chiroptic Properties of Small Peptides by a Molecular Orbital Method

  • M. Iseli
  • R. Geiger
  • G. Wagnière
Conference paper
Part of the The Jerusalem Symposia on Quantum Chemistry and Biochemistry book series (JSQC, volume 10)

Abstract

The exciton model has been successful in interpreting the long-wavelength chiroptic properties of both quasi-infinite [1–6] polypeptides and of shorter oligopeptides [7–12]. Initially, only the electric dipole-electric dipole interaction (μ-μ mechanism) of the amide π-π* transitions was considered. After the discovery in the early 1960’s of a n-π* band at longer wavelength than the π-π* bands [13–17], several investigations were then undertaken to include magnetic dipole allowed transitions in the exciton scheme (local n-π interaction and nonlocal electric dipole-electric quadrupole interation; μi-mi and μi-mj mechanisms) [7–12].

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Copyright information

© Springer Science+Business Media Dordrecht 1977

Authors and Affiliations

  • M. Iseli
    • 1
  • R. Geiger
    • 1
  • G. Wagnière
    • 1
  1. 1.Institute of Physical ChemistryUniversity of ZürichZürichSwitzerland

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