Application of a 2D Molybdenum Telluride in SERS Detection of Biorelevant Molecules

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43921167" target="_blank" >RIV/60461373:22310/20:43921167 - isvavai.cz</a>
Alternative codes found
RIV/44555601:13440/20:43895984
Result on the web
<a href="https://pubs.acs.org/doi/pdf/10.1021/acsami.0c11231" target="_blank" >https://pubs.acs.org/doi/pdf/10.1021/acsami.0c11231</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsami.0c11231" target="_blank" >10.1021/acsami.0c11231</a>

Result language
angličtina
Original language name
Application of a 2D Molybdenum Telluride in SERS Detection of Biorelevant Molecules
Original language description
Two-dimensional (2D) transition-metal dichalcogenides have become promising candidates for surface-enhanced Raman spectroscopy (SERS), but currently very few examples of detection of relevant molecules are available. Herein, we show the detection of the lipophilic disease marker β-sitosterol on few-layered MoTe2 films. The chemical vapor deposition (CVD)-grown films are capable of nanomolar detection, exceeding the performance of alternative noble-metal surfaces. We confirm that the enhancement occurs through the chemical enhancement (CE) mechanism via formation of a surface-analyte complex, which leads to an enhancement factor of ≈104, as confirmed by Fourier transform infrared (FTIR), UV-vis, and cyclic voltammetry (CV) analyses and density functional theory (DFT) calculations. Low values of signal deviation over a seven-layered MoTe2 film confirms the homogeneity and reproducibility of the results in comparison to noble-metal substrate analogues. Furthermore, β-sitosterol detection within cell culture media, a minimal loss of signal over 50 days, and the opportunity for sensor regeneration suggest that MoTe2 can become a promising new SERS platform for biosensing.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/GJ19-24603Y" target="_blank" >GJ19-24603Y: Metal surface modification - new generation of icephobic materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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