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@inproceedings{1763478,
author = {Tycova, Anna and Prikryl, Jan and Vaňhara, Petr and Kleparnik, Karel and Foret, Frantisek},
address = {Ostrava},
booktitle = {11th International Conference on Nanomaterials - Research & Application (NANOCON 2019)},
doi = {http://dx.doi.org/10.37904/nanocon.2019.8480},
keywords = {Bi-ligand; nanoparticle; saline solution; stability; surface-enhanced Raman spectrometry},
howpublished = {elektronická verze "online"},
language = {eng},
location = {Ostrava},
isbn = {978-80-87294-95-6},
pages = {428-433},
publisher = {TANGER Ltd},
title = {Surface modification of nanoparticles for sustaining sensitivity of surface-enhanced raman spectrometric measurements in salinated environment},
url = {https://doi.org/10.37904/nanocon.2019.8480},
year = {2020}
}
TY - JOUR
ID - 1763478
AU - Tycova, Anna - Prikryl, Jan - Vaňhara, Petr - Kleparnik, Karel - Foret, Frantisek
PY - 2020
TI - Surface modification of nanoparticles for sustaining sensitivity of surface-enhanced raman spectrometric measurements in salinated environment
PB - TANGER Ltd
CY - Ostrava
SN - 9788087294956
KW - Bi-ligand
KW - nanoparticle
KW - saline solution
KW - stability
KW - surface-enhanced Raman spectrometry
UR - https://doi.org/10.37904/nanocon.2019.8480
N2 - Surface-enhanced Raman spectrometry (SERS) represents a powerful method for analysis of a broad spectrum of analytes ranging from inorganic ions to biomolecules of high complexity. It combines the potential of Raman spectrometry for a definite identification of an analyte with remarkable sensitivity achieved by the surface enhancement effect occurring on metal nanoparticles. While low ionic strength influences positively the sensitivity of the SERS measurement, a higher level of inorganic salts leads to fast ruining of colloidal character, which completely devastates the effect of the surface enhancement. The common stabilization of nanoparticles by a layer of polymers has a negative impact on the SERS sensitivity since it shields the nanoparticle surface from the analytes. In this work, we aim at the development of the bi-ligand system of nanoparticles surface modification for improved stability of colloid in saline solution at sustaining the potential for sensitive SERS analyses. The proposed system relies on the binding of 3-mercaptopropionic acid and thiolated polyethylene glycol in a suitable ratio onto the nanoparticle surfaces. While the short chains of the acid sustain the accessibility of the surface for analytes, the polymeric structures act as a steric barrier preventing colloid aggregation.
ER -
TYCOVA, Anna, Jan PRIKRYL, Petr VAŇHARA, Karel KLEPARNIK a Frantisek FORET. Surface modification of nanoparticles for sustaining sensitivity of surface-enhanced raman spectrometric measurements in salinated environment. Online. In \textit{11th International Conference on Nanomaterials - Research \&{} Application (NANOCON 2019)}. Ostrava: TANGER Ltd, 2020, s.~428-433. ISBN~978-80-87294-95-6. Dostupné z: https://dx.doi.org/10.37904/nanocon.2019.8480.
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