Copper-based multiwavelength UV surface enhanced Raman spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00635734" target="_blank" >RIV/68378271:_____/25:00635734 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/adom.202500078" target="_blank" >https://doi.org/10.1002/adom.202500078</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adom.202500078" target="_blank" >10.1002/adom.202500078</a>
Alternative languages
Result language
angličtina
Original language name
Copper-based multiwavelength UV surface enhanced Raman spectroscopy
Original language description
Herein, it is demonstrated that copper (Cu) nanoparticle-based surfaces prepared via a wet-chemical method exhibit considerable enhancement of the Raman signal for a monolayer of adenine, guanine, riboflavin, 4-mercaptobenzoic acid, and potassium thiocyanate analytes upon excitation with a laser in the wavelength range of 229–325 nm. The results reveal a notable enhancement of the Raman signal in the surface-enhanced Raman scattering (SERS) spectra of the analytes in the deep UV(ultraviolet) spectral ranges, a phenomenon previously unreported for Cu-based surfaces, which, according to current knowledge, typically exhibit enhancement only in the red and near-infrared spectral regions. Several analytes of different chemical natures are tested, which allow to test the hypothesis that π-conjugated molecules localized on the copper surface are more likely to contribute to the chemical enhancement of Raman signal. This enhancement arises from their capacity for charge delocalization, effective orbital alignment with the metal and resonance with electronic transitions in the UV spectral region. Based on these findings, the chemical enhancement mechanism related to charge transfer is the most plausible explanation for the observed enhancement in the UV-SERS signals of the investigated molecules on Cu surfaces.
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
21001 - Nano-materials (production and properties)
Result continuities
Project
<a href="/en/project/EH22_008%2F0004596" target="_blank" >EH22_008/0004596: Sensors and Detectors for Future Information Society</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Optical Materials
ISSN
2195-1071
e-ISSN
2195-1071
Volume of the periodical
13
Issue of the periodical within the volume
18
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
2500078
UT code for WoS article
001464699100001
EID of the result in the Scopus database
2-s2.0-105002434606