Excitation transfer between components of molecular layers of cyanine compounds |
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Authors: | E N Kaliteevskaya V P Krutyakova T K Razumova A A Starovoytov |
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Institution: | 1.St. Petersburg State University of Information Technologies, Mechanics, and Optics,St. Petersburg,Russia |
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Abstract: | Using the example of layers of symmetric polymethine dyes, we have studied the optical excitation energy transfer processes
between nanocomponents of a molecular layer. The fluorescence yields and life-times of excited states of monomeric stereoisomers
have been estimated, and the stereoisomerization yields have been determined. We show that the excitation transfer yield between
the S
1 states of monomeric stereoisomers (tens of percent) is considerably higher than the fluorescence yield (several percent)
and depends on the structure of terminal groups of the molecule. |
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Keywords: | |
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