Bi-Ligand Modification of Nanoparticles: An Effective Tool for Surface-Enhanced Raman Spectrometry in Salinated Environments.
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ABSTRACT:
SUBMITTER: Tycova A
PROVIDER: S-EPMC6781045 | biostudies-literature | 2019 Sep
REPOSITORIES: biostudies-literature
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Bi-Ligand Modification of Nanoparticles: An Effective Tool for Surface-Enhanced Raman Spectrometry in Salinated Environments.
Tycova Anna A Kleparnik Karel K Foret Frantisek F
Nanomaterials (Basel, Switzerland) 20190905 9
Elimination of massive aggregation of nanoparticles in the sample of high ionic strength is a prerequisite for the sensitive analysis through a surface-enhanced Raman spectrometry (SERS). We present a system of silver colloid modification composed of two thiolated modifiers (3-mercaptopropionic acid and thiolated polyethylene glycol) both creating a strong Ag-S bond. At their optimal molar ratio, the polymer acts as a steric barrier preventing direct nanoparticle-nanoparticle interaction, while ...[more]
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