Off-Resonant Two-Photon Absorption Cross-Section Enhancement of an Organic Chromophore on Gold Nanorods

被引：16
|
作者：
Sivapalan, Sean T. [1 ]
Vella, Jarrett H. [3 ,4 ]
Yang, Timothy K. [2 ]
Dalton, Matthew J. [3 ,4 ]
Haley, Joy E. [5 ]
Cooper, Thomas M. [5 ]
Urbas, Augustine M. [5 ]
Tan, Loon-Seng [5 ]
Murphy, Catherine J. [1 ,2 ]
机构：
[1] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA
[2] Univ Illinois, Dept Chem, Urbana, IL 61801 USA
[3] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA
[4] Wyle Aerosp Grp, Dayton, OH 45431 USA
[5] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 05期
关键词：
SURFACE-PLASMON RESONANCE; METAL NANOPARTICLES; OPTICAL-PROPERTIES; FLUORESCENCE;
D O I：
10.1021/jz4000774
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：
Surface-plasmon-initiated interference effects of polyelectrolyte-coated gold nano-rods on the two-photon absorption of an organic chromophore were investigated. With polyelectrolyte-bearing gold nanorods of two, four, six, and eight layers, the role of the plasmonic fields as function of distance on such effects was examined An unusual distance dependence was found: enhancements in the two-photon cross-section were at a minimum at an intermediate distance, then rose again at a further distance. The observed values of enhancement were compared to theoretical predictions using finite element analysis and showed good agreement due to constructive and destructive interference effects.
引用
收藏
页码：749 / 752
页数：4
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