Investigation of the properties of gold nanoparticles in aqueous solution at extremely high lattice temperatures

被引：83

作者：

Hu, M ^{[1
]}

Petrova, H ^{[1
]}

Hartland, GV ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 391卷 / 4-6期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.cplett.2004.05.016

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：

Transient absorption data for gold nanoparticles in aqueous solution obtained using a double pump-pulse configuration are presented. The first pulse heats the particles, and the second pulse interrogates the symmetric breathing mode. The experiments were performed as a function of the intensity of the first pulse, and the relative delay between pulses. Analysis of the results show that lattice temperatures of similar to1000 K are achieved at high intensity. This significantly perturbs the surrounding solvent, possibly causing explosive boiling at temperatures greater than 550 +/- 50 K. This threshold is consistent with studies of superheated liquids. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：220 / 225

页数：6

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