Surface Enhanced Raman Spectra of 1,4-Benzenedimethanethiol on electrochemically (single potential step) fabricated nanoporous gold films

Access & Terms of Use
metadata only access
Copyright: Copyright 2012, University of New South Wales
Abstract
The one-step electrochemicalfabrication of 3D-nano-porous goldfilms (NPGFs) was optimised to function as a Surface Enhanced Raman Spectroscopy (SERS) substrate at 785 nm by a central composite experimental design. The concentration of the acid electrolyte (HCl), the potential step time, and the interaction between the acid concentration and the step time all had significant influence on the SERS intensity. The substrate with an optimum SERS intensity of the 1610 cm - 1 band from 1,4-benzenedimethanethiol, which was self-assembled on the surface, was fabricated by applying 1.4 V (v Ag|AgCl|3.0 M NaCl) from open circuit potential for 50 s in 2.0 M HCl. The optimised 3D-NPGF substrates have highly uniform coverage of gold nanopores that leads to homogenous SERS intensities across 1000 μm2 of surface.
Persistent link to this record
Link to External Data Repository
Electronic Location
Contact Information
Please notify Primary Investigator for permission to access this data.
Research Data Creator(s)
Lead Chief Investigator
Corporate/Industry Contributor(s)
Publication Year
2013
Resource Type
Dataset
Keyword(s)
UNSW Faculty
Related dataset(s)
Related publication(s)
Related grant(s)
Surface enhanced Raman spectroscopy: Substrate fabrication and applications to arsenic speciation