DNA‐Organized Light‐Harvesting Antennae: Energy Transfer in Polyaromatic Stacks Proceeds through Interposed Nucleobase Pairs |
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Authors: | Caroline D Bsch Elif Abay Simon M Langenegger Maryam Nazari Andrea Cannizzo Thomas Feurer Robert Hner |
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Institution: | Caroline D. Bösch,Elif Abay,Simon M. Langenegger,Maryam Nazari,Andrea Cannizzo,Thomas Feurer,Robert Häner |
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Abstract: | DNA‐based light‐harvesting antennae with varying arrangements of light‐absorbing phenanthrene donor units and a pyrene acceptor dye were synthesized and tested for their light‐harvesting properties. Excitation of phenanthrene is followed by rapid transfer of the excitation energy to the pyrene chromophore. A block of six light‐absorbing phenanthrenes was separated from the site of the acceptor in a stepwise manner by an increasing number of intervening AT base pairs. Energy transfer occurs through interposed AT base pairs and is still detected when the phenanthrene antenna is separated by 5 AT base pairs. |
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Keywords: | DNA light-harvesting antenna phenanthrene pyrene energy transfer |
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