Laser ablation synthesis of new gold tellurides using tellurium and nanogold as precursors. Laser desorption ionisation time‐of‐flight mass spectrometry

Abstract

LDI of nanogold-Te conjugate is a suitable procedure for the generation of new gold telluride clusters. Treatment of borosilicate glass with a diffuse coplanar surface barrier discharge strongly enhances the deposition of gold tellurides on glass while limited adsorption on a silicon surface was observed.

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

“…These common calibration standards require high instrumental resolution to reveal their accurate masses and can suffer from low stability and differential ionization due to mutual competition during ionization. Moreover, accurate calibration using peptide standards is complicated by the nonGaussian distribution of 13 C isotopes in proteins over m/z 5 kDa [3]. The price of commercially available standards and the accuracy of in-house preparation protocols are also relevant issues.…”

“…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.…”

Generation of new AgmTen clusters via laser ablation synthesis using Ag‐Te nano‐composite as precursor. Quadrupole ion trap time‐of‐flight mass spectrometry

“…TOFMS does not give direct structural information and thus it is difficult to evaluate the structures of silver telluride clusters from the mass spectra alone. As the structures of silver and tellurium clusters have already been reported, [21,22,29,30] we are proposing herein structures of some of the most simple Ag m Te n clusters (Fig. 6).…”

Laser ablation synthesis of arsenic–phosphide AsmPn clusters from As–P mixtures. Laser desorption ionisation with quadrupole ion trap time‐of‐flight mass spectrometry: The mass spectrometer as a synthesizer

“…Laser desorption ionization time‐of‐flight mass spectrometry (LDI‐TOFMS) is a powerful and useful technique to generate and study clusters formed during the laser ablation (LA) of solid materials. For example, the formation of phosphorus sulphides or selenides, arsenic sulphidesor selenides, sulphur tellurides, gold phosphides, gold tellurides, gold arsenides, and gold carbides, etc., has been studied. LA was also used for the analysis of various nano‐layers of solid materials, e.g.…”