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Long-pulse laser launch and ionization of tailored large neutral silver nanoparticles with atomic mass assignment

Gallego, A and Sezer, U. and Arndt, M. and Mayor, M.. (2017) Long-pulse laser launch and ionization of tailored large neutral silver nanoparticles with atomic mass assignment. Nanoscale, 9 (26). pp. 9175-9180.

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Official URL: https://edoc.unibas.ch/63162/

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Abstract

We explore the synthesis, characterization, neutral launch and vacuum ultraviolet ionization of massive perfluorinated-alkyl-capped nanoparticles. The presence of the ligand coating in solution is corroborated by Fourier transform infrared spectroscopy (FT-IR) and the particle size distribution is analyzed by transmission electron microscopy (TEM). Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry identifies perfluoralkyl coated silver nanoparticles as the most stable species among the materials studied here. They can be launched in high vacuum using long-pulse low-power laser heating-orders of magnitude below typical thresholds for laser desorption. Energy-dispersive X-ray spectroscopy (EDX) of the recaptured silver clusters confirms the expected elemental distribution. Volatilization with subsequent ionization of the neutral nanoparticle beam in high vacuum by 157 nm light allows analyzing their mass with atomic resolution.
Faculties and Departments:05 Faculty of Science > Departement Chemie
05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel and Gallego Gonzalez, Almudena
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:RSC Publishing
ISSN:2040-3364
e-ISSN:2040-3372
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:16 Apr 2018 07:28
Deposited On:16 Apr 2018 07:28

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