hr Propagating and Localized Surface Plasmon Co-Enhanced Raman Scattering Based on a Waveguide Coupling Surface Plasmon Resonance Structure

被引：5

作者：

Wang, Lehua ^{[1
,2
]}

Geng, Yijia ^{[1
]}

Zhang, Shida ^{[1
]}

Liang, Jingqiu ^{[1
]}

Xu, Shuping ^{[3
]}

Liu, Yu ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2023年 / 127卷 / 08期

基金：

中国国家自然科学基金;

关键词：

BIOSENSOR; FLUORESCENCE; FIBER;

D O I：

10.1021/acs.jpcc.2c07801

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 propose a waveguide-coupled surface plasmon resonance (WCSPR) structure with MgF2 as the waveguide layer to enhance Raman scattering. The WCSPR was a five-layer resonance structure composed of prism/Ag film/MgF2 film/outer Ag film layers. The electromagnetic field was stronger with the WCSPR structure than with a traditional SPR structure. Furthermore, localized and propagating surface plasmon co -enhanced Raman scattering of 4-mercaptopyridine was observed on the WCSPR/4-Mpy/silver-nanoparticle sandwich structure. The most effective coupling of the localized and propagating surface plasmons resulted in a 60-fold enhancement in the signal intensity relative to that obtained with a conventional SPR structure. The enhancement factor of the WCSPR/4-Mpy/silver-nanoparticle configuration was 3.6 x 107.

引用

页码：4188 / 4194

页数：7

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