DNA-based molecular wires: Multiple emission pathways of individual constructs

Gabriel Sánchez-Mosteiro, Erik M.H.P. Van Dijk, Jordi Hernando, Mike Heilemann, Philip Tinnefeid, Markus Sauer, Felix Koberlin, Matthias Patting, Michael Wahl, Rainer Erdmann, Niek F. Van Hulst, Maria F. García-Parajó

Research output: Contribution to journalArticleResearchpeer-review

39 Citations (Scopus)

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. © 2006 American Chemical Society.
Original languageEnglish
Pages (from-to)26349-26353
JournalJournal of Physical Chemistry B
Volume110
Issue number51
DOIs
Publication statusPublished - 28 Dec 2006

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