Laser ablation generation of clusters from As‐Te mixtures, As‐Te glass nano‐layers and from Au‐As‐Te nano‐composites. Quadrupole ion trap time‐of‐flight mass spectrometry

Abstract

LAS was demonstrated to be a useful technique for the generation of AuxAsmTen clusters in the gas phase. More AsmTen clusters were generated from the deposited glass layers than from As-Te mixtures. Most of the ternary AuxAsmTen clusters generated from the nano-composite are reported here for the first time.

Clusters of Monoisotopic Elements for Calibration in (TOF) Mass Spectrometry

“…Clusters of monoisotopic elements provide simple spectra with many monoisotopic peaks covering the mass range of interest with regular mass spacing. In this work, we discuss the calibration of mass spectra by clusters of red phosphorus, which is already established in our laboratory [6,[10][11][12][13][14][15][16], and compare it with calibration by gold clusters generated directly on the target by laser desorption ionization (LDI)-MS of various materials, including gold foil [17], various types of gold nanoparticles (AuNPs), chloroauric acid (HAuCl 4 ), a mixture of 2-(4-hydroxyphenylazo) benzoic acid and HAuCl 4 [18], and polyvinylpyrrolidone-stabilized AuNPs [19]. Gold clusters provide simple and fast determination of accurate mass compared with common calibration standards, such as peptides or proteins.…”