DNA-Based Molecular Wires: Multiple Emission Pathways of Individual Constructs

Sanchez-Mosteiro, Gabriel and Dijk van, Erik M.H.P. and Hernando, Jordi and Heilemann, Mike and Tinnefeld, Philip and Sauer, Markus and Koberlin, Felix and Patting, Matthias and Wahl, Michael and Erdmann, Rainer and Hulst van, Niko F. and Garcia-Parajo, Maria F. (2006) DNA-Based Molecular Wires: Multiple Emission Pathways of Individual Constructs. Journal of Physical Chemistry B: Materials, surfaces, interfaces, & biophysical, 110 (51). pp. 26349-26353. ISSN 1520-6106

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Abstract:	The extent of photon energy transfer through individual DNA-based molecular wires composed of five dyes is investigated at the single molecular level. Combining single-molecule spectroscopy and pulse interleaved excitation imaging, we have directly resolved the time evolution spectral response of individual constructs, while simultaneously probing DNA integrity. Our data clearly show that intact wires exhibit photon-transfer efficiencies close to 100% across five dyes. Dynamical and multiple pathways for the photon emission resulting from conformational freedom of the wire are readily uncovered. These results provide the basis for guiding the synthesis of DNA-based supramolecular arrays with improved photon transport at the nanometer scale.
Item Type:	Article
Copyright:	© 2006 American Chemical Society
Research Group:	Optical Sciences (OS)
Link to this item:	http://purl.utwente.nl/publications/74214
Official URL:	http://dx.doi.org/10.1021/jp064701f
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Metis ID: 235910