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

作者：Hsueh Han Yu; Chen Hung Ying; Ling Yi Chun; Huang Wei Shiang; Hung Yu Chueh; Gwo Shangjr; Ho Rong Ming^*

来源：Journal of Materials Chemistry C, 2014, 2(23): 4667-4675.

DOI：10.1039/c4tc00431k

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).

• 出版日期2014
• 单位清华大学