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Mapping Fluorescence Enhancement of Plasmonic Nanorod Coupled Dye Molecules by Toth, Emese; Ungor, Ditta; Novak, Tibor; Ferenc, Gyorgyi; Banhelyi, Balazs; Csapo, Edit; Erdelyi, Miklos; Csete, Maria is a scholarly article available to read on EtoBox.

What is Mapping Fluorescence Enhancement of Plasmonic Nanorod Coupled Dye Molecules about?

Plasmonically enhanced fluorescence is a widely studied and applied phenomenon, however only a comparative theoretical and experimental analyses of coupled fluorophores and plasmonic nanoresonators makes it possible to uncover, how this phenomenon can be controlled. A numerical optimization method was applied to design configurations that are capable of resulting in an enhancement of excitation and emission, moreover of both phenomena simultaneously in coupled Cy5 dye molecule and gold nanorod systems. Parametric sensitivity studies revealed, how the fluorescence enhancement depends on the molecule's location, distance and orientation. Coupled systems designed for simultaneous improvement exhibited the highest (intermediate directional) total fluorescence enhancement, which is accompanied by intermediate sensitivity to the molecule's parameters, except the location and orientation sensitivity at the excitation wavelength. Gold nanorods with a geometry corresponding to the predicted optimal configurations were synthesized, and DNA strands were used to control the Cy5 dye molecule distance from the nanorod surface via hybridization of the Cy5-labelled oligonucleotide. State-of-the-ar

Author

Toth, Emese; Ungor, Ditta; Novak, Tibor; Ferenc, Gyorgyi; Banhelyi, Balazs; Csapo, Edit; Erdelyi, Miklos; Csete, Maria

Published

2020

Language

EN