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Updated: May 11, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Synergistic switching of plasmonic resonances and molecular spin states
Khaldoun Abdul-Kader1, Manuel Lopes, Carlos Bartual-Murgui
1LCC, CNRS and Université de Toulouse (UPS, INP), Toulouse, France.
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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