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

Bösch Caroline D. | Zendy; Abay Elif | Zendy; Langenegger Simon M. | Zendy; Nazari Maryam | Zendy; Cannizzo Andrea | Zendy; Feurer Thomas | Zendy; Häner Robert | Zendy

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

Author(s) -

Bösch Caroline D.,

Abay Elif,

Langenegger Simon M.,

Nazari Maryam,

Cannizzo Andrea,

Feurer Thomas,

Häner Robert

Publication year - 2019

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.201900148

Subject(s) - chemistry , phenanthrene , phenanthrenes , chromophore , nucleobase , pyrene , acceptor , photochemistry , energy transfer , excitation , base pair , dna , chemical physics , organic chemistry , biochemistry , physics , engineering , electrical engineering , condensed matter physics

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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