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Integrating DNA Photonic Wires into Light‐Harvesting Supramolecular Polymers
Author(s) -
Kownacki Mariusz,
Langenegger Simon M.,
Liu ShiXia,
Häner Robert
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201809914
Subject(s) - chromophore , supramolecular chemistry , materials science , photonics , supramolecular polymers , polymer , energy transfer , antenna effect , energy harvesting , nanotechnology , acceptor , optoelectronics , förster resonance energy transfer , photochemistry , chemical physics , chemistry , luminescence , optics , fluorescence , energy (signal processing) , crystallography , physics , quantum mechanics , composite material , condensed matter physics , crystal structure
An approach combining DNA nanoscaffolds with supramolecular polymers for the efficient and directional propagation of light‐harvesting cascades has been developed. A series of photonic wires with different arrangements of fluorophores in DNA‐organized nanostructures were linked to light‐harvesting supramolecular phenanthrene polymers (SPs) in a self‐assembled fashion. Among them, a light‐harvesting complex (LHC) composed of SPs and a photonic wire of phenanthrene, Cy3, Cy5, and Cy5.5 chromophores reveals a remarkable energy transfer efficiency of 59 %. Stepwise transfer of the excitation energy collected by the light‐harvesting SPs via the intermediate Cy3 and Cy5 chromophores to the final Cy5.5 acceptor proceeds through a Förster resonance energy transfer mechanism. In addition, the light‐harvesting properties are documented by antenna effects ranging from 1.4 up to 23 for different LHCs.