title: Rhodium nanoparticles for ultraviolet plasmonics.
abstract: 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.
authors.affiliation: Department of Physics and ‡Department of Chemistry, Duke University , Durham, North Carolina 27708, United States.
authors.forename: Anne M
authors.initials: AM
authors.lastname: Watson
authors.forename: Xiao
authors.initials: X
authors.lastname: Zhang
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Alcaraz de la Osa
authors.forename: Juan
authors.initials: J
authors.lastname: Marcos Sanz
authors.forename: Francisco
authors.initials: F
authors.lastname: González
authors.forename: Fernando
authors.initials: F
authors.lastname: Moreno
authors.forename: Gleb
authors.initials: G
authors.lastname: Finkelstein
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.forename: Henry O
authors.initials: HO
authors.lastname: Everitt
keywords: Plasmonics; Raman; fluorescence; nanoparticles; photocatalysis; rhodium; ultraviolet