Reduced Self-Aggregation and Improved Stability of Silica-Coated Fe₃O₄/Ag SERS-Active Nanotags Functionalized With 2-Mercaptoethanesulfonate.

ABSTRACT: Nanocomposites combining magnetic and plasmonic properties are very attractive within the field of surface-enhanced Raman scattering (SERS) spectroscopy. Applications presented so far take advantage of not only the cooperation of both components but also synergy (enhanced properties), leading to multi-approach analysis. While many methods were proposed to synthesize such plasmonic-magnetic nanoparticles, the issue of their collective magnetic behavior, inducing irreversible self-aggregation, has not been addressed yet. Thus, here we present a simple and fast method to overcome this problem, employing 2-mercaptoethanesulfonate (MES) ions as both a SERS tag and primer molecules in the silica-coating process of the previously fabricated Fe₃O₄/Ag nanocomposite. The use of

SUBMITTER: Zygielo M 

PROVIDER: S-EPMC8241903 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature