Particles Size Measurements of Silole Nano-clusters by Using Fluorescence Correlation Spectroscopy

초록

Fluorescence correlation spectroscopy (FCS) is a powerful tool in fundamental and applied science to measure the properties of particles diffusing in a liquid. Important parameters of the diffusive particles; such as the diffusion coefficient, particle size, and viscosity, can be directly measured by using FCS with high accuracy. Here, we used FCS to study nano-clusters of silole molecules formed by aggregation in acetone-water mixtures. The analysis of the auto-correlation of the intensity fluctuation from fluorescing nanoaggregates freely diffusing in a solution allowed the determination of the size of the clusters on a nanometer scale. Aggregate formation of silole molecules was investigated systematically by measuring the cluster sizes made at different silole concentrations and water contents.

키워드