Rotational diffusion dynamics measurements of single aggregates existing at liquid/ liquid interfaces by using non-imaging light of optical microscope

点击翻译按钮获取中文摘要

Gold colloids of 4-20 nm in size were used as samples in the present study. An organic solvent and the aqueous gold colloidal solution were put in a thin-layer two-phase microcell, and the adsorption and the Brownian motion of the gold nanoparticles were examined by the total-internal reflection laser scattering method. As the result, the gold nanoparticles were adsorbed to the interfaces and they were aggregated there. Furthermore, the rotational dynamics measurements of the single aggregates at the interfaces clarified that they were rotated in-plane and out-of-plane direction at the interfaces.