Surface-enhanced Raman scattering of 4-mercaptopyridine on thin films of nanoscale Pd cubes, boxes, and cages

被引：99
作者：
McLellan, JM [1 ]
Xiong, YJ [1 ]
Hu, M [1 ]
Xia, YN [1 ]
机构：
[1] Univ Washington, Dept Chem, Seattle, WA 98195 USA
来源：
CHEMICAL PHYSICS LETTERS | 2006年 / 417卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/j.cplett.2005.10.028
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：
We have synthesized a variety of Pd nanoparticles of 8-50 nm in size including solid cubes, hollow boxes, and porous cages. Using 4-mercaptopyridine (4MP) as a probe molecule, we have characterized thin films for surface-enhanced Raman scattering (SERS) activity, and have found a significant level of enhancement (with factors ranging from 170 for 8-nm cubes to 1.3 x 10(4) for boxes). For the cubes and boxes, we observed a trend of stronger enhancement with more red-shifted SPR bands. We evaluated the sensitivity of this approach, and also used SERS to monitor monolayer formation on these particles. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：230 / 234
页数：5
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