Photoluminescent Enhancement of Ruthenium Complex Monolayers by Surface Plasmon Resonance of Silver Nanoparticles

Abstract

The photoluminescence intensity from a bis (2,2’-bipyridine)-(5-isothiocyanato-phenanthroline) Ruthenium (RuBICP) monolayer covalently bound to a glass substrate is found to be enhanced up to 20 times when silver nanoparticles are deposited on top. The emission spectra are blue shifted by interactions with the silver nanoparticles. Field enhancement is found to be able to enhance the radiative decay rate by over three orders of magnitude but fewer than 2 % of the molecules in the sample experience this large enhancement. Increased absorption rates also increase the luminescence but to a much smaller degree.

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Acknowledgments

We are grateful to Infotonics for support of this work and to Prof. Mark Stockman for helpful discussions.

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Correspondence to Lewis J. Rothberg.

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Pan, S., Wang, Z. & Rothberg, L.J. Photoluminescent Enhancement of Ruthenium Complex Monolayers by Surface Plasmon Resonance of Silver Nanoparticles. MRS Online Proceedings Library 818, 256–262 (2004). https://doi.org/10.1557/PROC-818-M5.19.1

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