Polarization control of metal-enhanced fluorescence in hybrid assemblies of photosynthetic complexes and gold nanorods

Bujak, Ł., Olejnik, M., Brotosudarmo, T. H. P., Schmidt, M. K., Czechowski, N., Piatkowski, D., Aizpurua, J., Cogdell, R. J. , Heiss, W. and Mackowski, S. (2014) Polarization control of metal-enhanced fluorescence in hybrid assemblies of photosynthetic complexes and gold nanorods. Physical Chemistry Chemical Physics, 16(19), pp. 9015-9022. (doi:10.1039/c3cp54364a)

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Publisher's URL: http://dx.doi.org/10.1039/c3cp54364a

Abstract

Fluorescence imaging of hybrid nanostructures composed of a bacterial light-harvesting complex LH2 and Au nanorods with controlled coupling strength is employed to study the spectral dependence of the plasmon-induced fluorescence enhancement. Perfect matching of the plasmon resonances in the nanorods with the absorption bands of the LH2 complexes facilitates a direct comparison of the enhancement factors for longitudinal and transverse plasmon frequencies of the nanorods. We find that the fluorescence enhancement due to excitation of longitudinal resonance can be up to five-fold stronger than for the transverse one. We attribute this result, which is important for designing plasmonic functional systems, to a very different distribution of the enhancement of the electric field due to the excitation of the two characteristic plasmon modes in nanorods.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cogdell, Professor Richard
Authors: Bujak, Ł., Olejnik, M., Brotosudarmo, T. H. P., Schmidt, M. K., Czechowski, N., Piatkowski, D., Aizpurua, J., Cogdell, R. J., Heiss, W., and Mackowski, S.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
Journal Name:Physical Chemistry Chemical Physics
Publisher:Royal Society of Chemistry
ISSN:1463-9076
ISSN (Online):1463-9084
Copyright Holders:Copyright © 2014 the Owner Societies
First Published:First published in Physical Chemistry Chemical Physics 16(19):9015-9022
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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