Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 125, Issue 9, Pages 2328-2338Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcb.1c00546
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Funding
- National Science Center in Poland [2016/21/B/ST4/02135]
- AGH University [2016/21/B/ST4/02135, 16.16.170.654]
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This paper utilizes ATR-FTIR and SEIRA techniques to characterize and analyze the selective adsorption of four peptides in body fluids, drawing specific conclusions on molecule-metal interactions and changes during substrate alteration from silver nanoparticles to gold nanoparticles through curve fitting and SEIRA measurements.
This paper describes an application of attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and surface-enhanced infrared spectroscopy (SEIRA) to characterize the selective adsorption of four peptides present in body fluids such as neuromedin B (NMB), bombesin (BN), neurotensin (NT), and bradykinin (BK), which are known as markers for various human carcinomas. To perform a reliable analysis of the SERIA spectra of these peptides, curve fitting of these spectra in the spectral region above 1500 cm(-1) and SEIRA measurements of sulfur-containing and aromatic amino acids were performed. On the basis of the analyses of the spectral profiles, specific conclusions were drawn regarding specific molecule-metal interactions and changes in the interaction during the substrate change from the surface of silver nanoparticles (AgNPs) to gold nanoparticles (AuNPs).
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