Beyond common analytical limits of radicals detection using the functional SERS substrates
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919574" target="_blank" >RIV/60461373:22310/19:43919574 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0925400519312146?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925400519312146?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.snb.2019.127015" target="_blank" >10.1016/j.snb.2019.127015</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Beyond common analytical limits of radicals detection using the functional SERS substrates
Popis výsledku v původním jazyce
In this work, we present the novel analytical procedure for the detection of the radicals in the analytical solutions with an unprecedented detection limit and versatility. The proposed procedure is based on the grafting of stable 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (TEMPO) radical to the surface of the SERS-active gold grating. The presence of radicals in the analytical solution induces the conversion of grafted TEMPO to N-oxoammonium salt accompanied by the appropriate peak shifts in SERS spectra. Observed changes of SERS spectra makes possible to detect the presence of radicals down to 10−10 M concentration, far exceeding the sensitivity of common analytical methods. Proposed highly regular plasmonic background providing homogeneous distribution of electric field enhancement together with used surface decoration procedure ensuring uniform distribution of grafted TEMPO molecules, result in perfect SERS results reproducibility. Finally, the regeneration of SERS substrate was also demonstrated which is essential for repeated use of created SERS chips in radical's detection.
Název v anglickém jazyce
Beyond common analytical limits of radicals detection using the functional SERS substrates
Popis výsledku anglicky
In this work, we present the novel analytical procedure for the detection of the radicals in the analytical solutions with an unprecedented detection limit and versatility. The proposed procedure is based on the grafting of stable 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (TEMPO) radical to the surface of the SERS-active gold grating. The presence of radicals in the analytical solution induces the conversion of grafted TEMPO to N-oxoammonium salt accompanied by the appropriate peak shifts in SERS spectra. Observed changes of SERS spectra makes possible to detect the presence of radicals down to 10−10 M concentration, far exceeding the sensitivity of common analytical methods. Proposed highly regular plasmonic background providing homogeneous distribution of electric field enhancement together with used surface decoration procedure ensuring uniform distribution of grafted TEMPO molecules, result in perfect SERS results reproducibility. Finally, the regeneration of SERS substrate was also demonstrated which is essential for repeated use of created SERS chips in radical's detection.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GA18-26170S" target="_blank" >GA18-26170S: Světlem laditelné konjugované polymery pro vratné spínání vodivosti</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Sensors and Actuators B
ISSN
0925-4005
e-ISSN
—
Svazek periodika
300
Číslo periodika v rámci svazku
DEC 1 2019
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
8
Strana od-do
"127015/1"-8
Kód UT WoS článku
000486995400014
EID výsledku v databázi Scopus
2-s2.0-85071486743