Separation of hydrophobic gold nanoparticles less than 10 nm by electrophoresis  

作　　者：YANG Yun MU Jin JIANG Long 

机构地区：[1]Key Laboratory of Colloid and Interface Science, Institute of Chemis-try, Chinese Academy of Sciences, Beijing 100080, China [2]School of Chemistry and Pharmaceutics, China East University of Science and Technology, Shanghai 200237, China

出　　处：《Chinese Science Bulletin》2005年第15期1591-1594,共4页

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.90207026).

摘　　要：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 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.

关 键 词：电泳现象 纳米粒子 电子显微镜 光谱 

分 类 号：O648.123[理学—物理化学]