Size and distance dependent fluorescence enhancement of nanoporous gold

被引：15

作者：

Chen, Chao ^{[1
]}

Zhang, Ling ^{[1
]}

Yang, Min ^{[1
]}

Tao, Chunxian ^{[1
]}

Han, Zhaoxia ^{[1
]}

Chen, Bin ^{[2
]}

Zeng, Heping ^{[1
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Opt Elect & Comp Engn, Minist Educ, Shanghai Key Lab Modern Opt Syst,Engn Res Ctr Opt, Shanghai 200093, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 09期

基金：

中国国家自然科学基金;

关键词：

SINGLE-MOLECULE FLUORESCENCE; LANGMUIR-BLODGETT MONOLAYERS; SURFACE-PLASMON RESONANCE; SILVER ISLAND FILMS; RAMAN-SCATTERING; NANOPARTICLES; LOCALIZATION; FABRICATION; ELECTRODES; SUBSTRATE;

D O I：

10.1364/OE.25.009901

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nanoporous gold (NPG) has been reported to provide remarkable fluorescence enhancement of adjacent fluorophores due to the metal-enhanced fluorescence phenomenon (MEF), and the enhancement is related with the characteristic length of nanoporosity. To fully understand the effect of NPG on nearby fluorophores, it is desirable to study systems with well-defined metal-fluorophore distances. In this study we investigated the distance effect by using silica as the spacing layer between fluorophores and NPG. Originating from competition between plasmonic amplifying and metallic quenching, the dye molecule rhodamine 6G was best enhanced by 20-nm SiO2 coated nanoporous gold with the pore size of 36 nm, while the protein phycoerythrin was best enhanced by 15-nm SiO2 coated nanoporous gold with the pore size of 42 nm and the quantum dots were best enhanced by 20-nm SiO2 coated nanoporous gold with the pore size of 42 nm. (C) 2017 Optical Society of America

引用

页码：9901 / 9910

页数：10

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