A simple method for measuring the size of metal nanoclusters in solution

被引：38

作者：

Gaikwad, Anil V. ^{[1
]}

Verschuren, Peter ^{[1
]}

Eiser, Erika ^{[1
]}

Rothenberg, Gadi ^{[1
]}

机构：

[1] Univ Amsterdam, Vant Hoff Inst Mol Sci, NL-1018 WV Amsterdam, Netherlands

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 35期

关键词：

D O I：

10.1021/jp063644n

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The connection between quantum size effects and the surface plasmon resonance of metal nanoclusters is introduced and the pros and cons of in situ and ex situ cluster analysis methods are outlined. A new method for estimating the size of nanoclusters is presented. This method combines core/shell cluster synthesis, UV-visible spectroscopy, and Mie theory. The core/shell approach enables the estimation of metal cluster sizes directly from the UV-visible spectra, even for transition metal nanoclusters such as Pd that have no distinct surface-plasmon peak in UV-visible region. Pd/Au and Au/Pd core/shell clusters as well as Au-Pd alloy clusters are synthesized and used as test cases for simulations and spectroscopic measurements. The results of the simulations and UV-visible spectroscopy experiments are validated with transmission electron microscopy.

引用

页码：17437 / 17443

页数：7

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