Surface-Enhanced Raman Spectroscopy Characterization of Salt-Induced Aggregation of Gold Nanoparticles.
Matthew Y ChanWeinan LengPeter J VikeslandPublished in: Chemphyschem : a European journal of chemical physics and physical chemistry (2017)
Low-frequency (<300 cm-1 ) vibrational interactions between gold surfaces and dissolved halides in water were investigated by surface-enhanced Raman spectroscopy (SERS). Experiments with NaF, NaCl, NaBr, and NaI salts indicate that the Raman shifts of the Au-X- SERS bands correlate with the bond strength of the corresponding covalent interaction. These low-frequency SERS bands open up new means to investigate the aggregation of nanoparticles in aqueous environments.
Keyphrases
- raman spectroscopy
- gold nanoparticles
- reduced graphene oxide
- ionic liquid
- minimally invasive
- high glucose
- pet ct
- sensitive detection
- diabetic rats
- organic matter
- drug induced
- cystic fibrosis
- staphylococcus aureus
- endothelial cells
- mass spectrometry
- high resolution
- pseudomonas aeruginosa
- molecular dynamics simulations
- density functional theory
- walled carbon nanotubes
- stress induced