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An electrophoresis device was used to separate hydrophobic gold nanoparticles with particle size less than 10 nm dispersed in organic solvent. Image of transmission electron microscope (TEM) and UV-Vis spectra showed that the particles in the vicinity of cathode have a smaller mean diameter than those near the anode. This result indicates that the nanogolds in chloroform bring a positive charge in oppo-sition to what is predicted by Coehn rule, and provides an electrophrosis method for separating hydrophobic nanogold particles of different sizes.
An electrophoresis device was used to separate hydrophobic gold nanoparticles with particle size less than 10 nm dispersed in organic solvent. Image of transmission electron microscope (TEM) and UV-Vis spectra showed that the particles in the vicinity of cathode with a smaller mean diameter than Those near the anode. This result indicates that the nanogolds in chloroform bring a positive charge in oppo-sition to what is predicted by Coehn rule, and provides an electrophoresis method for separating hydrophobic nanogold particles of different sizes.