Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 36: Plasmonics and Nanooptics
O 36.13: Poster
Dienstag, 17. März 2015, 18:15–21:00, Poster A
Coupling of an organic cyanine dye with a plasmonic structure — •Jessica Koller1, Thorsten Schumacher1, Christian Dicken1, Daniela Wolf1, Anna Köhler2, and Markus Lippitz1 — 1Experimentalphysik III, Universität Bayreuth — 2Experimentalphysik II, Universität Bayreuth, Germany
By placing a multichromophoric system nearby a metal surface the optical properties of the system can be modified due to the interaction between the surface plasmon polariton and the molecular states. This can lead to an emission enhancement and energy transfer between different emitters on the surface.
In this context we want to examine the optical properties of a hybrid plasmon-emitter-system consisting of an organic cyanine dye and different plasmonic structures by means of spatially resolved fluorescence spectroscopy. Therefor we use a J-aggregate forming TDBC dye which shows a sharp resonance in absorbance and luminescence for high dye concentrations. At this juncture we start with the analysis of thin TDBC-PVA-films with different dye concentrations and present TDBC luminescence spectra and measurements of photostability. Additionally, a method to reduce photoactived bleaching by oxygen is tested as well as first results for the coupling of TDBC with plasmonic structures are given and compared to numerical simulations.