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Author Burin, A. L. ♦ Dickman, J. A. ♦ Uskov, D. B. ♦ Hebbard, C. F. F. ♦ Schatz, G. C.
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-06-30
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Physics - Chemical Physics ♦ Physics - Optics ♦ physics:physics
Abstract We investigate the effect of exciton coupling on the optical absorption spectrum of polymer molecules under conditions of strong inhomogeneous broadening. We demonstrate that the dependence of the maximum in the rescaled absorption spectrum on the number of monomers is determined by the average monomer excitation energies and their resonant coupling and insensitive to the inhomogeneous broadening. Thus the absorption spectrum can be used to determine optical interactions between monomers. The results are applied to the absorption spectra of poly-A poly-T DNA hairpins and used to interpret the dependence of the absorption spectrum on the number of monomers. We also discuss exciton localization in these hairpins.
Educational Use Research
Learning Resource Type Article


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