Applied Surface Science, Vol.472, 93-98, 2019
Preparation and characterization of long-term stable SERS active materials as potential supports for medical diagnostic
Silver, gold and platinum architectures deposited on copper support have been proposed as long-lasting active materials successfully used in Surface-Enhanced Raman Spectroscopy (SERS). These novel hybrid materials are an attractive alternative to the unstable and short-term storable metal colloids. Environmental Scanning Electron Microscope (ESEM) equipped with Energy-Dispersive X-ray Spectroscopy (EDXS) and Contact Angle (CA) measurements were used to characterize obtained silver fern-like as well as gold and platinum nanocube/nanosphere structures, both: right after preparation and after 6 months of storage. Recorded Raman spectra of 10 mu M Rhodamine 6G applied to the substrate corroborates strong enhancement of Raman signal and they are in accordance with theoretical calculations generated by Amsterdam Density Functional (ADF). SERS spectra are consistent with ESEM micrographs and confirmed the presence of a numerous hot spots occurring on the modified copper plates. (C) 2018 Elsevier B.V. All rights reserved.