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Synergistic switching of plasmonic resonances and molecular spin states

Abstract : Plasmonic resonance properties of a series of lithographically patterned gold nanorod arrays, spin coated by thin films of an iron(II)–triazole type spin crossover complex, were investigated upon heating/cooling and also under 633 nm laser irradiation. In both cases a reversible shift of the localised surface plasmon resonance wavelength was observed and quantitatively linked to the refractive index change accompanying the spin transition. These results show that molecular spin state switching can be very efficiently triggered by the photo-thermal effect, which – in turn – allows for an active tuning of the plasmon resonance.
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Khaldoun Abdul-Kader, Manuel Lopes, Carlos Bartual-Murgui, Olena Kraieva, Edna Hernandez, et al.. Synergistic switching of plasmonic resonances and molecular spin states. Nanoscale, Royal Society of Chemistry, 2013, 5 (12), pp.5288-5293. ⟨10.1039/c3nr01337e⟩. ⟨hal-01767595⟩



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