Journal article
Effects of Hydrostatic Pressure on the Surface Plasmon Resonance of Gold Nanocrystals
Camino Martin-Sanchez, Jose Antonio Barreda-Argueso, Susanne Seibt, Paul Mulvaney, Fernando Rodriguez
ACS Nano | American Chemical Society | Published : 2019
Abstract
The surface plasmon resonances of gold nanospheres and nanorods have been measured as a function of hydrostatic pressure up to 17 GPa in methanol-ethanol 4:1 solvent and up to 10 GPa in paraffin. Both the sphere resonance and the longitudinal rod resonance exhibit redshifts, whereas the transverse rod mode shows an extremely weak redshift or blueshift depending on the nanorod aspect ratio. Solidification of the solvent around 11 GPa causes some aggregation of the particles, readily identified through broadening of the surface plasmon band and further redshifting. Spectra collected during loading and unloading cycles exhibit only minimal hysteresis if the pressure remains below 11 GPa. The su..
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Awarded by MINECO/FEDER
Awarded by MALTA TEAM/MINECO
Awarded by Australian Research Council
Funding Acknowledgements
Financial support from Projects MAT2015-69508-P (MINECO/FEDER) and MAT2015-71070-REDC (MALTA TEAM/MINECO) is acknowledged. Fruitful discussions with L. M. Liz-Marzan are acknowledged. P.M. and S.S. acknowledge support from the Australian Research Council through Grant CE170100026.