Gold nanoshells with magnetic cores and an urea-based receptor for SERS sensing of fluoride anions: experimental and computational study
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F23%3A43927306" target="_blank" >RIV/60461373:22340/23:43927306 - isvavai.cz</a>
Výsledek na webu
<a href="https://pubs.rsc.org/en/Content/ArticleLanding/2023/AN/D3AN00625E" target="_blank" >https://pubs.rsc.org/en/Content/ArticleLanding/2023/AN/D3AN00625E</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/D3AN00625E" target="_blank" >10.1039/D3AN00625E</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Gold nanoshells with magnetic cores and an urea-based receptor for SERS sensing of fluoride anions: experimental and computational study
Popis výsledku v původním jazyce
The study demonstrates that a combination of plasmonic nanostructures and artificial receptors can be applied for sensing of small molecular species. Gold nanoshells containing magnetic cores are used as the SERS-active substrate, which opens the way for the development of multimodal contrast agents with applicability extended to sensing or for the separation of analytes by magnetic solid-phase extraction. Disubstituted ureas forming hydrogen-bonded complexes with certain anions can be employed as their molecular sensors. In this case study, the gold nanoshells with silica-coated Mn-Zn ferrite cores are prepared by a multistep procedure. The nanoshells are co-functionalized with the N-(4-mercaptophenyl)-N’-(4-nitrophenyl)urea sensor, synthesized directly on the gold surface, and with 4-nitrothiophenol, which is adopted as an internal standard. SERS measurements are carried out with acetonitrile solutions of tetrabutylammonium fluoride (Bu4NF) over a concentration range of 10-10–10-1 mol L-1. The spectral response of the sensor is dependent on the fluoride concentration in the range 10-5–10-1 mol L-1. To investigate more the SERS mechanism, a model sensor, N-(4‑bromophenyl)‑N’-(4‑nitrophenyl)urea, was synthesized and used in Raman spectroscopy with solutions of Bu4NF, up to the molar ratio of 1:20. The spectra and the interactions between the sensors and fluoride anions are also studied by extensive DFT computations.
Název v anglickém jazyce
Gold nanoshells with magnetic cores and an urea-based receptor for SERS sensing of fluoride anions: experimental and computational study
Popis výsledku anglicky
The study demonstrates that a combination of plasmonic nanostructures and artificial receptors can be applied for sensing of small molecular species. Gold nanoshells containing magnetic cores are used as the SERS-active substrate, which opens the way for the development of multimodal contrast agents with applicability extended to sensing or for the separation of analytes by magnetic solid-phase extraction. Disubstituted ureas forming hydrogen-bonded complexes with certain anions can be employed as their molecular sensors. In this case study, the gold nanoshells with silica-coated Mn-Zn ferrite cores are prepared by a multistep procedure. The nanoshells are co-functionalized with the N-(4-mercaptophenyl)-N’-(4-nitrophenyl)urea sensor, synthesized directly on the gold surface, and with 4-nitrothiophenol, which is adopted as an internal standard. SERS measurements are carried out with acetonitrile solutions of tetrabutylammonium fluoride (Bu4NF) over a concentration range of 10-10–10-1 mol L-1. The spectral response of the sensor is dependent on the fluoride concentration in the range 10-5–10-1 mol L-1. To investigate more the SERS mechanism, a model sensor, N-(4‑bromophenyl)‑N’-(4‑nitrophenyl)urea, was synthesized and used in Raman spectroscopy with solutions of Bu4NF, up to the molar ratio of 1:20. The spectra and the interactions between the sensors and fluoride anions are also studied by extensive DFT computations.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10406 - Analytical chemistry
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Analyst
ISSN
0003-2654
e-ISSN
1364-5528
Svazek periodika
neuveden
Číslo periodika v rámci svazku
20
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
14
Strana od-do
—
Kód UT WoS článku
001075347400001
EID výsledku v databázi Scopus
2-s2.0-85171422397