Detection of organic dyes by surface-enhanced Raman spectroscopy using plasmonic NiAg nanocavity films
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F21%3A00345066" target="_blank" >RIV/68407700:21260/21:00345066 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21460/21:00345066 RIV/00216224:14310/21:00120889
Result on the web
<a href="https://doi.org/10.1016/j.saa.2020.119322" target="_blank" >https://doi.org/10.1016/j.saa.2020.119322</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.saa.2020.119322" target="_blank" >10.1016/j.saa.2020.119322</a>
Alternative languages
Result language
angličtina
Original language name
Detection of organic dyes by surface-enhanced Raman spectroscopy using plasmonic NiAg nanocavity films
Original language description
This work presents the NiAg nanocavity film for the detection of organic dyes by surface-enhanced Raman spectroscopy (SERS). Nanocavity films were prepared by colloidal lithography using 518-nm polystyrene spheres combined with the electrochemical deposition of Ni supporting layer and Ag nanoparticles homogeneous SERS-active layer. The theoretical study was modelled by finite-difference time-domain (FDTD) simulation of electromagnetic field enhancement near the nanostructured surface and experimentally proven by SERS measurement of selected organic dyes (rhodamine 6G, crystal violet, methylene blue, and malachite green oxalate) in micromolar concentration. Furthermore, the concentration dependence was investigated to prove the suitability of NiAg nanocavity films to detect ultra-low concentrations of samples. The detection limit was 1.3 x 10-12, 1.5 x 10-10, 1.4 x 10-10, 7.5 x 10-11 mol.dm-3, and the standard deviation was 20.1%, 13.8%, 16.7%, and 19.3% for R6G, CV, MB, and MGO, respectively. The analytical enhancement factor was 3.4 x 105 using R6G as a probe molecule. The principal component analysis (PCA) was performed to extract the differences in complex spectra of the dyes where the first and second PCs carry 42.43% and 31.39% of the sample variation, respectively. The achieved results demonstrated the suitability of AgNi nanocavity films for the SERS-based detection of organic dyes, with a potential in other sensing applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10401 - Organic chemistry
Result continuities
Project
<a href="/en/project/LM2018127" target="_blank" >LM2018127: Czech Infrastructure for Integrative Structural Biology</a><br>
Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
ISSN
1386-1425
e-ISSN
1873-3557
Volume of the periodical
249
Issue of the periodical within the volume
March
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
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UT code for WoS article
000609022700025
EID of the result in the Scopus database
2-s2.0-85098201204