Size dependence of the surface plasmon enhanced second harmonic response of gold colloids: towards a new calibration method
- 1 January 1999
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 7,p. 581-582
- https://doi.org/10.1039/a900230h
Abstract
Hyper Rayleigh scattering in solution is used for the determination of the first order hyperpolarizability β colloid of gold colloids in the size range 5–22 nm; these hyperpolarizabilities are found to range from 0.60 × 10–25 esu for 5 nm diameter colloids to up to 16.6 × 10–25 esu for 22 nm diameter colloids at the second harmonic wavelength of 532 nm; the strong size dependence of the hyperpolarisabilities reported here suggests that hyper Rayleigh scattering experiments can efficiently be used to calibrate the particle diameter of colloidal suspensions.Keywords
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