Abstract:
The non-oxidizing 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 photo-damage were observed under near-resonant
ultraviolet illumination, while charge transfer simultaneously increased fluorescence for 13
minutes. The combined local field enhancement and charge transfer demonstrate essential steps
toward plasmonically-enhanced ultraviolet photocatalysis.
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