Spotlights pubs.acs.org/JPCL
Spotlights: Volume 8, Issue 11
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HYDROGEN-MEDIATED ELECTRON DOPING OF GOLD CLUSTERS AS REVEALED BY IN SITU X-RAY AND UV−VIS ABSORPTION SPECTROSCOPY Gold clusters stabilized by polymers provide a platform for studying the intrinsic stabilities and optical and magnetic properties of gold clusters as well as surface-mediated processes such as catalysis and sensing. The unique properties of gold clusters are governed mainly by their electronic structures, which are significantly different from those of the corresponding bulk materials and nanoparticles (NPs). Gold NPs > 2 nm exhibit localized surface plasmon resonance (LSPR) absorption, wherein collective oscillations of the valence electrons are induced by incident light with a wavelength of ∼520 nm. By contrast, gold clusters
