DC Conductivity of Au Nanoparticles in Organic Solvent

Abstract

Abstract: Gold nanoparticles were chemically synthesized with a diameter of about 10 nm. Dodecanethiol, tetradecanethiol and hexadecanethiol were used to protect Au nanoparticles. Then Au nanoparticles/chloroform and Au nanoparticles/toluene suspensions were prepared. DC conductivity of different suspensions was investigated. The electrical conductivity of the samples increased with the increase of the concentration of Au nanoparticles, and a rapid increase in conductivity is observed when the concentration increased from a low value to a moderate value. The conductivity increases slowly when the concentration is larger than the moderate value. The moderate concentration values are₁1.22, 7.96 and 5.47 g/L in chloroform suspensions when Au nanoparticles were encapsulated by dodecanethiol, tetradecanethiol and hexadecanethiol, respectively. The conductivity for Au nanoparticles/chloroform suspension is higher than that for Au nanoparticles/toluene suspension in the whole concentration range.

Key words: Au nanoparticle, Conductivity, Chloroform, Toluene

CLC Number:

O614

TrendMD:

FANG Fang, WANG Ying, ZHANG Xiao-Yan, ZHANG Ya-Fei . DC Conductivity of Au Nanoparticles in Organic Solvent[J]. Chem. J. Chinese Universities, 2004, 25(10): 1793.

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DC Conductivity of Au Nanoparticles in Organic Solvent

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