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DNA‐Organized Light‐Harvesting Antennae: Energy Transfer in Polyaromatic Stacks Proceeds through Interposed Nucleobase Pairs

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Bösch Caroline D., Abay Elif, Langenegger Simon M., Nazari Maryam, Cannizzo Andrea, Feurer Thomas, Häner Robert,
Project From DNA-Assembled Oligochromophores to Supramolecular Polymers: Aromatic Oligophosphates as Versatile Building Blocks for Functional Materials
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Original article (peer-reviewed)

Journal Helvetica Chimica Acta
Volume (Issue) 102(8)
Page(s) e1900148
Title of proceedings Helvetica Chimica Acta
DOI 10.1002/hlca.v102.8

Open Access

URL https://boris.unibe.ch/cgi/users/home?screen=EPrint%3A%3AView&eprintid=132378
Type of Open Access Repository (Green Open Access)

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 via interposed AT base pairs and is still detected when the phenanthrene antenna is separated by 5 AT base pairs.
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