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Membrane-Anchored DNA Assembly for Energy and Electron Transfer

Membrane-Anchored DNA Assembly for Energy and Electron Transfer
Membrane-Anchored DNA Assembly for Energy and Electron Transfer
In this work we examine the trapping and conversion of visible light energy into chemical energy using a supramolecular assembly. The assembly consists of a light-absorbing antenna and a porphyrin redox center, which are covalently attached to two complementary 14-mer DNA strands, hybridized to form a double helix and anchored to a lipid membrane. The excitation energy is finally trapped in the lipid phase of the membrane as a benzoquinone radical anion that could potentially be used in subsequent chemical reactions. In addition, in this model complex, the hydrophobic porphyrin moiety acts as an anchor into the liposome positioning the DNA construct on the lipid membrane surface. The results show the suitability of our system as a prototype for DNA-based light-harvesting devices, in which energy transfer from the aqueous phase to the interior of the lipid membrane is followed by charge separation
0002-7863
2831-2839
Tumpane, John
b8edc11a-1930-4b53-bdd3-8fd6456be05b
Ljungdahl, Thomas
3ec810c3-870a-4380-a213-afe32e5f02ee
Wilhelmsson, L. Marcus
bcf4f67a-198c-4c5e-80b8-a78f743509d4
Nordén, Bengt
64d4009e-7456-4490-ac87-8d587334c7e0
Brown, Tom
1cd7df32-b945-4ca1-8b59-a51a30191472
Albinsson, Bo
1571067f-df46-43f7-96b9-52dc43278777
Tumpane, John
b8edc11a-1930-4b53-bdd3-8fd6456be05b
Ljungdahl, Thomas
3ec810c3-870a-4380-a213-afe32e5f02ee
Wilhelmsson, L. Marcus
bcf4f67a-198c-4c5e-80b8-a78f743509d4
Nordén, Bengt
64d4009e-7456-4490-ac87-8d587334c7e0
Brown, Tom
1cd7df32-b945-4ca1-8b59-a51a30191472
Albinsson, Bo
1571067f-df46-43f7-96b9-52dc43278777

Tumpane, John, Ljungdahl, Thomas, Wilhelmsson, L. Marcus, Nordén, Bengt, Brown, Tom and Albinsson, Bo (2009) Membrane-Anchored DNA Assembly for Energy and Electron Transfer. Journal of the American Chemical Society, 131 (8), 2831-2839. (doi:10.1021/ja8038294).

Record type: Article

Abstract

In this work we examine the trapping and conversion of visible light energy into chemical energy using a supramolecular assembly. The assembly consists of a light-absorbing antenna and a porphyrin redox center, which are covalently attached to two complementary 14-mer DNA strands, hybridized to form a double helix and anchored to a lipid membrane. The excitation energy is finally trapped in the lipid phase of the membrane as a benzoquinone radical anion that could potentially be used in subsequent chemical reactions. In addition, in this model complex, the hydrophobic porphyrin moiety acts as an anchor into the liposome positioning the DNA construct on the lipid membrane surface. The results show the suitability of our system as a prototype for DNA-based light-harvesting devices, in which energy transfer from the aqueous phase to the interior of the lipid membrane is followed by charge separation

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Published date: 6 February 2009

Identifiers

Local EPrints ID: 146685
URI: http://eprints.soton.ac.uk/id/eprint/146685
ISSN: 0002-7863
PURE UUID: 1500168d-24f8-4ef4-b1a0-7233188e9689

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Date deposited: 22 Apr 2010 08:52
Last modified: 17 Jul 2019 00:04

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Contributors

Author: John Tumpane
Author: Thomas Ljungdahl
Author: L. Marcus Wilhelmsson
Author: Bengt Nordén
Author: Tom Brown
Author: Bo Albinsson

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