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

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Escalantet, Maryana and Lenferink, Aufried and Zhao, Yiping and Tas, Niels and Huskens, Jurriaan and Hunter, C. Neil and Subramaniam, Vinod and Otto, Cees (2010) Long-Range Energy Propagation in Nanometer Arrays of Light Harvesting Antenna Complexes. Nano Letters, 10 (4). pp. 1450-1457. ISSN 1530-6984

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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.

Item Type:Article
Copyright:© 2010 American Chemical Society
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Electrical Engineering, Mathematics and Computer Science (EEMCS)
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/75254
Official URL:http://dx.doi.org/10.1021/nl1003569
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