Nanoparticle assemblies with molecular springs: A nanoscale thermometer

被引：163

作者：

Lee, J

Govorov, AO

Kotov, NA ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[3] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA

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

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2005年 / 44卷 / 45期

关键词：

excited states; luminescence; nanoparticles; poly(ethylene glycol); thermal expansion;

D O I：

10.1002/anie.200501264

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) A temperature-dependent emission is observed for CdTe nanoparticles connected to Au nanoparticles by a flexible poly(ethyleneglycol) (PEG) link acting as a molecular spring (see picture). The extension of the PEG springs varies depending on the temperature, which causes variations in CdTe emission caused by plasmon-exciton interactions. A theoretical model of plasmon-exciton coupling explains the optical and thermal effects. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：7439 / 7442

页数：4

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