Issue 23, 2014

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

Abstract

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 β-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 108.

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

Supplementary files

Article information

Article type
Paper
Submitted
04 Mar 2014
Accepted
01 Apr 2014
First published
01 Apr 2014

J. Mater. Chem. C, 2014,2, 4667-4675

Author version available

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

H. Hsueh, H. Chen, Y. Ling, W. Huang, Y. Hung, S. Gwo and R. Ho, J. Mater. Chem. C, 2014, 2, 4667 DOI: 10.1039/C4TC00431K

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