Photostimulated Au Nanoheaters in Polymer and Biological Media: Characterization of Mechanical Destruction and Boiling

被引：59

作者：

Huehn, Dominik ^{[1
,2
]}

Govorov, Alexander ^{[3
]}

Gil, Pilar Rivera ^{[1
,2
]}

Parak, Wolfgang J. ^{[1
,2
]}

机构：

[1] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany

[2] Univ Marburg, WZMW, D-35032 Marburg, Germany

[3] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2012年 / 22卷 / 02期

关键词：

gold nanoparticles; layer-by-layer assembly; photoinduced heating; plasmonics; polymer films; TO-HEAT CONVERSION; GOLD NANOPARTICLES; METAL NANOPARTICLES; ABSORPTION; RELEASE; ASSEMBLIES; GENERATION; THERAPY; SIZE;

D O I：

10.1002/adfm.201101134

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Agglomerated gold nanoparticle clusters embedded in polyelectrolyte films are optically excited, which results in local ablation of material from the polyelectrolyte films and in some cases leads to the formation of a gas bubble. Evidence is given that this process is mediated by superheating of the medium around the excited gold nanoparticle clusters. This process is highly dependent on the medium used. Besides the boiling point, salt and proteins in the medium also affect the formation of gas bubbles. These data demonstrate that the type of medium must be considered when describing light-mediated heating of gold nanoparticle clusters, which are fixed in a matrix surrounded by medium.

引用

页码：294 / 303

页数：10

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