R. Antoine et al., SURFACE-PLASMON ENHANCED NONLINEAR-OPTICAL RESPONSE OF GOLD NANOPARTICLES AT THE AIR TOLUENE INTERFACE/, Chemical communications, (19), 1997, pp. 1901-1902
Colloidal gold nanoparticles in toluene solution, synthesised using a
two-phase liquid/liquid system, display second harmonic generation, wa
velength analysis of which indicates the narrow frequency band of the
gold surface plasmon for nanoparticles present at the air/toluene inte
rface.