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Energy levels of almost‐periodic polymers
Author(s) -
Herzenberg A.,
Modinos A.
Publication year - 1964
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360020605
Subject(s) - exciton , polymer , dipole , chemistry , energy (signal processing) , excitation , molecular physics , distribution (mathematics) , schematic , unit (ring theory) , sequence (biology) , atomic physics , condensed matter physics , physics , quantum mechanics , mathematics , mathematical analysis , biochemistry , mathematics education , organic chemistry , electronic engineering , engineering
Numerical calculations have been done on the exciton spectrum of a schematic model of a linear polymer. The model consists of a random sequence of two kinds of subunit whose energy levels and transition moments are almost, but not quite, the same. The orders of magnitude of parameters are taken from DNA, but the full helical geometry has not been considered. Results are given for the density of energy levels, the dipole transition strength per unit energy, and the distribution of excitation energy along the polymer in individual states. A number of localized exciton states were found.