Nano Archive

Charge-transfer induced surface-enhanced Raman scattering in silver nanoparticle assemblies

Zhou, Qun and Zhao, Gui and Chao, Yanwen and Li, Yan and Wu, Ying and Zheng, Junwei (2007) Charge-transfer induced surface-enhanced Raman scattering in silver nanoparticle assemblies. JOURNAL OF PHYSICAL CHEMISTRY C, 111 (5). pp. 1951-1954.

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Official URL: http://dx.doi.org/10.1021/jp067045s

Abstract

Molecular junctions of metal/molecule/metal were fabricated with silver nanoparticles and functional molecules through layer-by-layer self-assembly techniques. The Raman scattering of the interconnecting molecules between the silver nanoparticles can be greatly enhanced. For the silver/4-aminothiophenol/silver (Ag/PATP/ Ag) assembly, in particular, the larger enhancement of the b(2) modes, relative to that of the a, modes, is ascribed to the charge transfer between the silver nanoparticles tunneling through the interconnecting PATP molecules. The molecular dipolar momentum and surface property of the silver nanoparticles have large effects on the enhancement of the Raman scattering of the interconnecting molecules.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nano objects
Analytical Science > Beam methods
ID Code:2613
Deposited By:Anuj Seth
Deposited On:09 Jan 2009 15:49
Last Modified:20 Jan 2009 11:34

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