Junction Plasmon-Induced Molecular Reorientation

被引：22
|
作者：
El-Khoury, Patrick Z. [1 ]
Hu, Dehong [1 ]
Hess, Wayne P. [1 ]
机构：
[1] Pacific NW Natl Lab, Div Phys Sci, Richland, WA 99352 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 20期
关键词：
ENHANCED RAMAN-SCATTERING; SPECTROSCOPY;
D O I：
10.1021/jz401838b
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：
Time- and frequency-dependent intensity variations in sequences of Raman spectra recorded at plasmonic junctions can be assigned to molecular reorientation. This is revealed through Raman trajectories recorded at a nanojunction formed between a silver atomic force microscope tip and a corrugated silver surface coated with biphenyl-4,4'-dithiol. Molecular motion is not observed when the tip is retracted, and only surface enhancement is operative. In effect, junction plasmon-induced molecular reorientation is tracked.
引用
收藏
页码：3435 / 3439
页数：5
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