A new fluorescein thiol esther derivativeL was successfully synthesized and fully characterized.The interaction of compound L with sphericalsilver nanoparticles (AgNPs) was explored in toluene,through the exchange of the tetraoctylammoniumbromated (TOAB) molecules stabilizing the silvernanoparticle surface (AgNPs@TOAB). A new hybridsystem AgNPs@L was obtained in which an intensemetal-enhancement fluorescence phenomenon takesplace. The behaviour of the new-coated Ag-NPs@L system was explored in the presence of silenttoxic metal ions, such as Hg2?, Pb2? and Tl? inorganic phase. Surprisingly, systemAgNPs@Lrevealsto be sensitive to Hg2? ions over the other heavy metalions studied.
- Biological effects
- Silver nanoparticles