title: DNA-based molecular wires: multiple emission pathways of individual constructs.
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.
authors.affiliation: Applied Optics Group, Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, 7500 AE Enschede, The Netherlands.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Sánchez-Mosteiro
authors.forename: Erik M H P
authors.initials: EM
authors.lastname: van Dijk
authors.forename: Jordi
authors.initials: J
authors.lastname: Hernando
authors.forename: Mike
authors.initials: M
authors.lastname: Heilemann
authors.forename: Philip
authors.initials: P
authors.lastname: Tinnefeld
authors.forename: Markus
authors.initials: M
authors.lastname: Sauer
authors.forename: Felix
authors.initials: F
authors.lastname: Koberlin
authors.forename: Matthias
authors.initials: M
authors.lastname: Patting
authors.forename: Michael
authors.initials: M
authors.lastname: Wahl
authors.forename: Rainer
authors.initials: R
authors.lastname: Erdmann
authors.forename: Niek F
authors.initials: NF
authors.lastname: van Hulst
authors.forename: Maria F
authors.initials: MF
authors.lastname: García-Parajó
mesh_terms: D004277:DNA, Single-Stranded / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D004277:DNA, Single-Stranded