  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
up to 13 minutes. The combined local field enhancement and charge transfer
demonstrate essential steps toward plasmonically-enhanced ultraviolet
photocatalysis.
