Rhodium nanoparticles for ultraviolet plasmonics.
The nonoxidizing catalytic noble metal rhodium is introduced for ultraviolet plasmonics. Planar tripods of 8 nm Rh nanoparticles, synthesized by a modified polyol reduction method, have a calculated local surface plasmon resonance near 330 nm. By attaching p-aminothiophenol, local field-enhanced Raman spectra and accelerated photodamage were observed under near-resonant ultraviolet illumination, while charge transfer simultaneously increased fluorescence for up to 13 min. The combined local field enhancement and charge transfer demonstrate essential steps toward plasmonically enhanced ultraviolet photocatalysis.
Watson, AM; Zhang, X; Alcaraz de la Osa, R; Marcos Sanz, J; González, F; Moreno, F; Finkelstein, G; Liu, J; Everitt, HO
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