Probing Dynamic Generation of Hot-Spots in Self-Assembled Chains of Gold Nanorods by Surface-Enhanced Raman Scattering

被引：248

作者：

Lee, Anna ^{[2
]}

Andrade, Gustavo F. S. ^{[3
]}

Ahmed, Aftab ^{[1
]}

Souza, Michele L. ^{[3
]}

Coombs, Neil ^{[2
]}

Tumarkin, Ethan ^{[2
]}

Liu, Kun ^{[2
]}

Gordon, Reuven ^{[1
]}

Brolo, Alexandre G. ^{[3
]}

Kumacheva, Eugenia ^{[2
]}

机构：

[1] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC V8W 3P6, Canada

[2] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada

[3] Univ Victoria, Dept Chem, Victoria, BC V8W 3V6, Canada

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 19期

基金：

加拿大自然科学与工程研究理事会;

关键词：

NANOPARTICLE SUPERSTRUCTURES; INORGANIC NANOPARTICLES; OPTICAL-ABSORPTION; BUILDING-BLOCKS; SELECTION-RULES; SERS; SUPERLATTICES; SILVER; NANOCRYSTALS; SPECTROSCOPY;

D O I：

10.1021/ja2015179

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Further progress in the applications of self-assembled nanostructures critically depends on developing a fundamental understanding of the relation between the properties of nanoparticle ensembles and their time-dependent structural characteristics. Following dynamic generation of hot-spots in the self-assembled chains of gold nanorods, we established a direct correlation between ensemble-averaged surface-enhanced Raman scattering and extinction properties of the chains. Experimental results were supported with comprehensive finite-difference time-domain simulations. The established relationship between the structure of nanorod ensembles and their optical properties provides the basis for creating dynamic, solution-based, plasmonic platforms that can be utilized in applications ranging from sensing to nanoelectronics.

引用

页码：7563 / 7570

页数：8

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