Advantages and drawbacks of the use of immobilized “green-synthesized” silver nanoparticles on gold nanolayer for near-field vibrational spectroscopic study of riboflavin

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00542624" target="_blank" >RIV/61388955:_____/21:00542624 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/21:43922371

Výsledek na webu

<a href="http://hdl.handle.net/11104/0320008" target="_blank" >http://hdl.handle.net/11104/0320008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2021.149832" target="_blank" >10.1016/j.apsusc.2021.149832</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advantages and drawbacks of the use of immobilized “green-synthesized” silver nanoparticles on gold nanolayer for near-field vibrational spectroscopic study of riboflavin

Popis výsledku v původním jazyce

Nanoscopic near-field techniques are powerful tools in the chemical nanoanalysis thanks to their lateral resolution and the ability to detect trace amounts limiting to the single-molecule level and study molecular interactions at the same level. To achieve these goals, a gap mode is preferred, in which a large-scale plasmonic enhancing substrate with the adsorbed analyte is used and the Au/Ag scanning tip is approached to obtain high enhancement of the local electric field and form the hot–spot between the Au/Ag tip and the Au/Ag plasmonic surface. The appropriate enhancing substrate is crucial considering the enhancement factor and the optical response quality. This study focused on the riboflavin detection by tip-enhanced Raman scattering (TERS) and scanning near-field infrared microscopy (SNIM), immobilized Ag nanoparticles (NPs), synthesized by flavonoids reduction were employed. AgNPs immobilized on Au nanolayer via a dithiol-linker represent effective substrate exhibiting appropriate morphology and optical properties. SNIM provided insight into the intensity distribution of the riboflavin optical response. The optical amplitude and phase images indicate better adsorption of riboflavin on the AgNP-coated surface than on the Au-coated glass. TERS shows interferences of flavonoid residues on some substrates, but the riboflavin limit of detection was improved compared to surface-enhanced Raman scattering.

Název v anglickém jazyce

Advantages and drawbacks of the use of immobilized “green-synthesized” silver nanoparticles on gold nanolayer for near-field vibrational spectroscopic study of riboflavin

Popis výsledku anglicky

Nanoscopic near-field techniques are powerful tools in the chemical nanoanalysis thanks to their lateral resolution and the ability to detect trace amounts limiting to the single-molecule level and study molecular interactions at the same level. To achieve these goals, a gap mode is preferred, in which a large-scale plasmonic enhancing substrate with the adsorbed analyte is used and the Au/Ag scanning tip is approached to obtain high enhancement of the local electric field and form the hot–spot between the Au/Ag tip and the Au/Ag plasmonic surface. The appropriate enhancing substrate is crucial considering the enhancement factor and the optical response quality. This study focused on the riboflavin detection by tip-enhanced Raman scattering (TERS) and scanning near-field infrared microscopy (SNIM), immobilized Ag nanoparticles (NPs), synthesized by flavonoids reduction were employed. AgNPs immobilized on Au nanolayer via a dithiol-linker represent effective substrate exhibiting appropriate morphology and optical properties. SNIM provided insight into the intensity distribution of the riboflavin optical response. The optical amplitude and phase images indicate better adsorption of riboflavin on the AgNP-coated surface than on the Au-coated glass. TERS shows interferences of flavonoid residues on some substrates, but the riboflavin limit of detection was improved compared to surface-enhanced Raman scattering.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LM2018124" target="_blank" >LM2018124: Nanomateriály a nanotechnologie pro ochranu životního prostředí a udržitelnou budoucnost</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Surface Science

ISSN

0169-4332

e-ISSN

1873-5584

Svazek periodika

557

Číslo periodika v rámci svazku

AUG 2021

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

149832

Kód UT WoS článku

000651208200006

EID výsledku v databázi Scopus

2-s2.0-85104711151