Design and Synthesis of Molecular Reactors for the Preparation of Topologically Trapped Gold Cluster

Molecular Reactors Based on Organosiliconμ-Networks

Convection and thermodiffusion of colloidal gold tracers by laser light scattering

In a dynamic light scattering experiment, we have investigated the time intensity correlation function and the profile of the transmitted laser beam for organic dispersions of light absorbing colloidal particles containing tiny gold clusters. The correlation functions have been found to show a superposition of an exponential decay, corresponding to Brownian motion of the tracers, and well-defined oscillations. These oscillations are caused by convection due to local heating of the sample by the incident laser beam, which has been confirmed independently via measurements of the local temperature within the sample. It will be shown how the particle convection velocity, which is the order of 1…