Tracer diffusion of a ligand-stabilized two-shell gold cluster

被引：11

作者：

Tominaga, T ^{[1
]}

Tenma, S ^{[1
]}

Watanabe, H ^{[1
]}

Giebel, U ^{[1
]}

Schmid, G ^{[1
]}

机构：

[1] UNIV ESSEN GESAMTHSCH, INST ANORGAN CHEM, D-45117 ESSEN, GERMANY

来源：

CHEMISTRY LETTERS | 1996年 / 12期

关键词：

D O I：

10.1246/cl.1996.1033

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Diffusion coefficients have been measured for the two-shell cluster of Au-55(Hdpbs) Cl-12(6) (Hdpbs = diphenylphosphinobenzene-3-sulfonic acid) in water at varying ionic strengths. Hydrodynamic radius of the particles are found to be 1.44 nm as calculated from the diffusion coefficient at sufficiently high ionic strengths. This is a little larger than the radius obtained from the AFM image. The diffusion coefficients decrease with decreasing ionic strength, indicating the electrostatic drag due to the ionic atmosphere.

引用

页码：1033 / 1034

页数：2

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