Membrane-Anchored DNA Assembly for Energy and Electron Transfer
Artikel i vetenskaplig tidskrift, 2009

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. © 2009 American Chemical Society.

Författare

Karl Börjesson

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

John Tumpane

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

Thomas Ljungdahl

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

Marcus Wilhelmsson

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

Bengt Nordén

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

T. Brown

University of Southampton

Jerker Mårtensson

Chalmers, Kemi- och bioteknik, Organisk kemi

Bo Albinsson

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

Journal of the American Chemical Society

0002-7863 (ISSN) 1520-5126 (eISSN)

Vol. 131 8 2831-2839

Ämneskategorier

Fysikalisk kemi

Organisk kemi

DOI

10.1021/ja8038294