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Open AccessArticle

Energy Transfer from Photosystem I to Thermally Reduced Graphene Oxide

1
Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
2
Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Materials 2018, 11(9), 1567; https://doi.org/10.3390/ma11091567
Received: 13 August 2018 / Revised: 21 August 2018 / Accepted: 22 August 2018 / Published: 30 August 2018
(This article belongs to the Special Issue Carbon Nanomaterials: Graphene, Nanoribbons and Quantum dots)
The energy transfer from photosynthetic complex photosystem I to thermally reduced graphene oxide was studied using fluorescence microscopy and spectroscopy, and compared against the structure in which monolayer epitaxial graphene was used as the energy acceptor. We find that the properties of reduced graphene oxide (rGO) as an energy acceptor is qualitatively similar to that of epitaxial graphene. Fluorescence quenching, which in addition to shortening of fluorescence decay, is a signature of energy transfer varies across rGO substrates and correlates with the transmission pattern. We conclude that the efficiency of the energy transfer depends on the number of rGO layers in the flakes and decreases with this number. Furthermore, careful analysis of fluorescence imaging data confirms that the energy transfer efficiency dependence on the excitation wavelength, also varies with the number of rGO flakes. View Full-Text
Keywords: energy transfer; reduced graphene oxide; protein; fluorescence microscopy energy transfer; reduced graphene oxide; protein; fluorescence microscopy
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Sulowska, K.; Wiwatowski, K.; Szustakiewicz, P.; Grzelak, J.; Lewandowski, W.; Mackowski, S. Energy Transfer from Photosystem I to Thermally Reduced Graphene Oxide. Materials 2018, 11, 1567.

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