A polymer-based SERS-active substrate with gyroid-structured gold multibranches

被引:35
作者
Hsueh, Han-Yu [1 ]
Chen, Hung-Ying [3 ]
Ling, Yi-Chun [4 ]
Huang, Wei-Shiang [1 ]
Hung, Yu-Chueh [4 ]
Gwo, Shangjr [3 ]
Ho, Rong-Ming [1 ,2 ]
机构
[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30013, Taiwan
[2] Natl Tsing Hua Univ, Frontier Res Ctr Fundamental & Appl Sci Matters, Hsinchu 30013, Taiwan
[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan
[4] Natl Tsing Hua Univ, Inst Photon Technol, Hsinchu 30013, Taiwan
关键词
RAMAN-SPECTRA; COPOLYMER; FILMS; ENHANCEMENT; TEMPLATES; RESONANCE; PYRIDINE; ARRAYS;
D O I
10.1039/c4tc00431k
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Here, we suggest an effective method to create a three-dimensional SERS-active substrate using a nanoporous polymer with bicontinuous nanochannels as a template for electroless plating of gold (Au), resulting in the formation of Au multibranches with sharp tips and corners for high-density and uniformly distributed hotspots as reliable SERS devices for detection. Also, by taking advantage of easy processing of polymeric materials, the polymer-based SERS-active substrate can be effectively fabricated in a large area for device design with mechanical robustness. Crystal violet and beta-carotene molecules are used to demonstrate the superior SERS detection sensitivity with high reproducibility and stability using the polymer-based SERS-active substrate, suggesting a new approach to fabricate materials for the detection of chemicals with an average enhancement factor up to 10(8).
引用
收藏
页码:4667 / 4675
页数:9
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