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Separation of hydrophobic gold nanoparticles less than 10 nm by electrophoresis

Author:
Yun, Yang, Jin, Mu, Long, Jiang
Source:
Chinese science bulletin 2005 v.50 no.15 pp. 1591-1594
ISSN:
1001-6538
Subject:
chloroform, electrodes, electrophoresis, gold, hydrophobicity, nanoparticles, particle size, transmission electron microscopes
Abstract:
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 opposition to what is predicted by Coehn rule, and provides an electrophrosis method for separating hydrophobic nanogold particles of different sizes.
Agid:
372923