J 2023

Fate of Gold Nanoparticles in Laser Desorption/Ionization Mass Spectrometry: Toward the Imaging of Individual Nanoparticles

PRYSIAZHNYI, Vadym, Antonín BEDNAŘÍK, Michal ŽALUD, Veronika HEGROVÁ, Jan NEUMAN et. al.

Basic information

Original name

Fate of Gold Nanoparticles in Laser Desorption/Ionization Mass Spectrometry: Toward the Imaging of Individual Nanoparticles

Authors

PRYSIAZHNYI, Vadym (203 Czech Republic, belonging to the institution), Antonín BEDNAŘÍK (203 Czech Republic, belonging to the institution), Michal ŽALUD (203 Czech Republic, belonging to the institution), Veronika HEGROVÁ (203 Czech Republic), Jan NEUMAN (203 Czech Republic) and Jan PREISLER (203 Czech Republic, guarantor, belonging to the institution)

Edition

Journal of the American Society for Mass Spectrometry, American Chemical Society, 2023, 1044-0305

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.200 in 2022

RIV identification code

RIV/00216224:14310/23:00130754

Organization unit

Faculty of Science

UT WoS

000953993900001

Keywords in English

Gold; Ions; Lasers; Metal nanoparticles; Suspensions

Tags

Tags

International impact, Reviewed
Změněno: 18/10/2024 13:48, Ing. Jana Kuchtová

Abstract

V originále

This study focuses on mapping the spatial distribution of Au nanoparticles (NPs) by laser desorption/ionization mass spectrometry imaging (LDI MSI). Laser interaction with NPs and associated phenomena, such as change of shape, melting, migration, and release of Au ions, are explored at the single particle level. Arrays of dried droplets containing low numbers of spatially segregated NPs were reproducibly prepared by automated drop-on-demand piezo-dispensing and analyzed by LDI MSI using an ultrahigh resolution orbital trapping instrument. To enhance the signal from NPs, an in source gas-phase chemical reaction of generated Au ions with xylene was employed. The developed technique allowed the detecting, chemical characterization, and mapping of the spatial distribution of Au NPs; the ion signals were detected from as low as ten 50 nm Au NPs on a pixel. Furthermore, the Au NP melting dynamics under laser irradiation was monitored by correlative atomic force microscopy (AFM) and scanning electron microscopy (SEM). AFM measurements of Au NPs before and after LDI MSI analysis revealed changes in NP shape from a sphere to a half-ellipsoid and total volume reduction of NPs down to 45% of their initial volume.

Links

GA21-12262S, research and development project
Name: Nanočásticové sondy pro zobrazovací hmotnostní spektrometrii
Investor: Czech Science Foundation
MUNI/A/1421/2022, interní kód MU
Name: Vývoj metod a instrumentace pro analýzu biologicky významných látek 2023
Investor: Masaryk University
90127, large research infrastructures
Name: CIISB II