Long-Range Energy Propagation in Nanometer Arrays of Light Harvesting Antenna Complexes

M. Escalante Marun, Aufrid T.M. Lenferink, Yiping Zhao, Niels Roelof Tas, Jurriaan Huskens, C. Neil Hunter, Vinod Subramaniam, Cornelis Otto

Research output: Contribution to journalArticleAcademicpeer-review

47 Citations (Scopus)

Abstract

Here we report the first observation of long-range transport of excitation energy within a biomimetic molecular nanoarray constructed from LH2 antenna complexes from Rhodobacter sphaeroides. Fluorescence microscopy of the emission of light after local excitation with a diffraction-limited light beam reveals long-range transport of excitation energy over micrometer distances, which is much larger than required in the parent bacterial system. The transport was established from the influence of active energy-guiding layers on the observed fluorescence emission. We speculate that such an extent of energy migration occurs as a result of efficient coupling between many hundreds of LH2 molecules. These results demonstrate the potential for long-range energy propagation in hybrid systems composed of natural light harvesting antenna molecules from photosynthetic organisms.
Original languageEnglish
Pages (from-to)1450-1457
Number of pages8
JournalNano letters
Volume10
Issue number4
DOIs
Publication statusPublished - 16 Mar 2010

Keywords

  • EWI-19070
  • Nanoimprint lithography
  • Energy propagation
  • IR-75254
  • light harvesting complexes
  • host-guest interactions
  • METIS-268482
  • excitonic transport

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