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Title: Fluorescence enhancement of light-harvesting complex 2 from purple bacteria coupled to spherical gold nanoparticles

Abstract

The influence of plasmon excitations in spherical gold nanoparticles on the optical properties of a light-harvesting complex 2 (LH2) from the purple bacteria Rhodopseudomonas palustris has been studied. Systematic analysis is facilitated by controlling the thickness of a silica layer between Au nanoparticles and LH2 complexes. Fluorescence of LH2 complexes features substantial increase when these complexes are separated by 12 nm from the gold nanoparticles. At shorter distances, non-radiative quenching leads to a decrease of fluorescence emission. The enhancement of fluorescence originates predominantly from an increase of absorption of pigments comprising the LH2 complex.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [4]
  1. Nicolaus Copernicus Univ., Torun (Poland). Inst. of Physics
  2. Ma Chung Univ., Malang (Indonesia). Ma Chung Research Center for Photosynthetic Pigments
  3. Univ. of Glasgow, Scotland (United Kingdom). Inst. of Molecular, Cell and Systems Biology
  4. Univ. Linz (Austria). Inst. fur Halbleiter-und Festkorperphysik
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC); Photosynthetic Antenna Research Center (PARC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1065874
DOE Contract Number:  
SC0001035
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 99; Journal Issue: 17; Related Information: PARC partners with Washington University in St. Louis (lead); University of California, Riverside; University of Glasgow, UK; Los Alamos National Laboratory; University of New Mexico; New Mexico Corsortium; North Carolina State University; Northwestern University; Oak Ridge National Laboratory; University of Pennsylvania; Sandia National Laboratories; University of Sheffield, UK; Journal ID: ISSN 0003-6951: APPLAB
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 77 NANOSCIENCE AND NANOTECHNOLOGY; solar (fuels), photosynthesis (natural and artificial), biofuels (including algae and biomass), bio-inspired, charge transport, membrane, synthesis (novel materials), synthesis (self-assembly)

Citation Formats

Bujak, Ł., Czechowski, N., Piatkowski, D., Litvin, R., Mackowski, S., Brotosudarmo, T. H. P., Pichler, S., Cogdell, R. J., and Heiss, W. Fluorescence enhancement of light-harvesting complex 2 from purple bacteria coupled to spherical gold nanoparticles. United States: N. p., 2011. Web. doi:10.1063/1.3648113.
Bujak, Ł., Czechowski, N., Piatkowski, D., Litvin, R., Mackowski, S., Brotosudarmo, T. H. P., Pichler, S., Cogdell, R. J., & Heiss, W. Fluorescence enhancement of light-harvesting complex 2 from purple bacteria coupled to spherical gold nanoparticles. United States. doi:10.1063/1.3648113.
Bujak, Ł., Czechowski, N., Piatkowski, D., Litvin, R., Mackowski, S., Brotosudarmo, T. H. P., Pichler, S., Cogdell, R. J., and Heiss, W. Mon . "Fluorescence enhancement of light-harvesting complex 2 from purple bacteria coupled to spherical gold nanoparticles". United States. doi:10.1063/1.3648113.
@article{osti_1065874,
title = {Fluorescence enhancement of light-harvesting complex 2 from purple bacteria coupled to spherical gold nanoparticles},
author = {Bujak, Ł. and Czechowski, N. and Piatkowski, D. and Litvin, R. and Mackowski, S. and Brotosudarmo, T. H. P. and Pichler, S. and Cogdell, R. J. and Heiss, W.},
abstractNote = {The influence of plasmon excitations in spherical gold nanoparticles on the optical properties of a light-harvesting complex 2 (LH2) from the purple bacteria Rhodopseudomonas palustris has been studied. Systematic analysis is facilitated by controlling the thickness of a silica layer between Au nanoparticles and LH2 complexes. Fluorescence of LH2 complexes features substantial increase when these complexes are separated by 12 nm from the gold nanoparticles. At shorter distances, non-radiative quenching leads to a decrease of fluorescence emission. The enhancement of fluorescence originates predominantly from an increase of absorption of pigments comprising the LH2 complex.},
doi = {10.1063/1.3648113},
journal = {Applied Physics Letters},
issn = {0003-6951: APPLAB},
number = 17,
volume = 99,
place = {United States},
year = {2011},
month = {10}
}