On the nature of excited electronic states in cyanine dyes: implications for visual pigment spectra |
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| Authors: | Uri Dinur Barry Honig Klaus Schulten |
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| Affiliation: | Department of Physical Chemistry. The Hebrew University, Jerusalem, Israel;Department of Physiology and Biophysics, The University of Illinois, Urbana. Illinois 61801, USA;Max-Planek-Institut für Biophysikalische Chemie, D-3400 Göttingen, West Germany |
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| Abstract: | CNDO/S CI calculations are carried out on polyenes and on cyanine dyes. In contrast to polyenes, doubly excited configurations have a strong effect on the first optically allowed excited state in cyanines. Protonated Schiff bases of retinal are closely related to cyanine dyes, with important consequences for models of visual pigment spectra and photochemistry. |
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| Keywords: | Present address: Department of Chemistry Harvard University Cambridge Massachusetts 02138 USA |
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