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Department of Chemistry College of Liberal Arts and Sciences

Surface Plasmon Mediated Chemical Depositions (SPMCD)

Chemical Deposition of Sub-10 nm Particles

Plasmonic illumination of a substrate with a gas phase Au complex. The localized photothermal heating leads to decomposition of the Au-complex and Au nanoparticle formation.
Qiu, J. et al., J. Am. Chem. Soc., 2013, 135, 38-41
Photothermal catalysis on plasmonic materials
Qiu, J., et al., J. Phys. Chem. C. 2014, 118, 20735-20749e

Solution Deposition of Cu Nanoparticle Films

Fabrication of sub-15 nm Au nanoparticles on a nanostructured Ag surface at room temperature via a liquid-phase chemical deposition upon excitation of the localized surface plasmon resonance (SPR). Plasmonic photothermal decomposition of CH3AuPPh3 forming Au nanoparticles on the Ag surface.
Qiu, J. et al. J. Phys. Chem. C. 2016, 120, 20775-20780b

Metallic copper nanoparticle (Cu NP) films were successfully deposited on a silver (Ag) film on nanosphere (AgFON) substrate after 5 min of low power visible-light irradiation, which demonstrates the versatility of this plasmon-mediated deposition strategy. Scheme (left); SEM images (right): a) Ag FON before deposition, b) after 5 min light irradiation (2.8 W/cm²).