@article{Wang2016, 
author = {Zongyuan Wang and Minyue Li and Wei Wang and Min Fang and Qidi Sun and Changjun Liu},
title = {Floating silver film: A flexible surface-enhanced Raman spectroscopy substrate for direct liquid phase detection at gas–liquid interfaces},
year = {2016},
journal = {Nano Research},
volume = {9},
number = {4},
pages = {1148-1158},
keywords = {liquid phase detection, surface-enhanced Raman, gas/liquid, silver film, poly(vinylpyrrolidone), electron reduction},
url = {https://www.sciopen.com/article/10.1007/s12274-016-1009-x},
doi = {10.1007/s12274-016-1009-x},
abstract = {In recent years, surface-enhanced Raman spectroscopy (SERS) has developed rapidly and is used for the detection of molecules and biomolecules in liquids. However, few studies have focused on SERS using a water surface as the substrate. A floating metal film on water is desirable for an enhanced SERS performance. In this work, silver nanoparticles (Ag NPs) encased in poly(vinylpyrrolidone) films (Ag-PVP films) were synthesized on the surface of an aqueous solution by room temperature electron reduction. A floating silver film on a water surface was thereby achieved and is reported for the first time. The synthesized Ag-PVP film is an excellent flexible substrate for SERS and has other potential applications. Using the floating silver film as a flexible SERS substrate, 10–11 M of 4-aminothiophenol, 10–6 M of riboflavin, 10–9 M of 4-mercaptobenzoic acid, 10–7 M of 4-mercaptophenol, and 10–7 M of 4-aminobenzoic acid are identified, demonstrating potential use for the floating substrate in the liquid-phase detection of molecules.}
}