Effect of Ag Nanoparticle Size on Ion Formation in Nanoparticle Assisted LDI MS

Kód výsledku v IS VaVaI

RIV/60076658:12310/20:43904096 - isvavai.cz

Nalezeny alternativní kódy

RIV/00216224:14310/20:00114576

Výsledek na webu

https://www.mdpi.com/2673-3501/1/1/2/htm

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Ag Nanoparticle Size on Ion Formation in Nanoparticle Assisted LDI MS

Popis výsledku v původním jazyce

Metal nanoparticles (NPs) were reported as an efficient matrix for detection of small molecules using laser desorption/ionization mass spectrometry. Their pronounced efficiency is mostly in desorption enhancement, while, in some cases, NPs can facilitate charge transfer to a molecule, which has been reported for alkali metals and silver. In this work, we present the study of the influence of Ag NP size on the laser desorption/ionization mass spectra of a model analyte, the molecule of riboflavin. The NPs were produced by magnetron sputtering-based gas aggregation in a vacuum and mass-filtered before the deposition on substrates. It was found that the utilization of smaller Ag NPs (below 15 nm in diameter) considerably enhanced the molecule desorption. In contrast, the laser irradiation of the samples with larger NPs led to the increased ablation of silver, resulting in [analyte + Ag]+ adduct formation.

Název v anglickém jazyce

Effect of Ag Nanoparticle Size on Ion Formation in Nanoparticle Assisted LDI MS

Popis výsledku anglicky

Metal nanoparticles (NPs) were reported as an efficient matrix for detection of small molecules using laser desorption/ionization mass spectrometry. Their pronounced efficiency is mostly in desorption enhancement, while, in some cases, NPs can facilitate charge transfer to a molecule, which has been reported for alkali metals and silver. In this work, we present the study of the influence of Ag NP size on the laser desorption/ionization mass spectra of a model analyte, the molecule of riboflavin. The NPs were produced by magnetron sputtering-based gas aggregation in a vacuum and mass-filtered before the deposition on substrates. It was found that the utilization of smaller Ag NPs (below 15 nm in diameter) considerably enhanced the molecule desorption. In contrast, the laser irradiation of the samples with larger NPs led to the increased ablation of silver, resulting in [analyte + Ag]+ adduct formation.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20506 - Coating and films

Projekt

TP01010019: Rozvoj Proof of concept aktivit na Jihočeské univerzitě

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Applied Nano

ISSN

2673-3501

e-ISSN

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Svazek periodika

1

Číslo periodika v rámci svazku

2020

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

3-13

Kód UT WoS článku

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EID výsledku v databázi Scopus

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