Další formáty:
BibTeX
LaTeX
RIS
@article{1232920,
author = {Štěpánová, Vlasta and Prokeš, Lubomír and Slavíček, Pavel and Alberti, Milan and Havel, Josef},
article_number = {11},
doi = {http://dx.doi.org/10.1002/rcm.7193},
keywords = {chalcogenide glass; Au-As-Te nano-composites; As-Te glass nano-layers; mass spectrometry (LDI QIT TOF MS); physical vapour deposition (PVD)},
language = {eng},
issn = {0951-4198},
journal = {Rapid Communications in Mass Spectrometry},
title = {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},
volume = {29},
year = {2015}
}
TY - JOUR ID - 1232920 AU - Štěpánová, Vlasta - Prokeš, Lubomír - Slavíček, Pavel - Alberti, Milan - Havel, Josef PY - 2015 TI - 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 JF - Rapid Communications in Mass Spectrometry VL - 29 IS - 11 SP - 1000-1008 EP - 1000-1008 SN - 09514198 KW - chalcogenide glass KW - Au-As-Te nano-composites KW - As-Te glass nano-layers KW - mass spectrometry (LDI QIT TOF MS) KW - physical vapour deposition (PVD) N2 - RATIONALE: Arsenic tellurides have found important applications in various fields of science, but only a few gold-arsenic tellurides have been reported. Laser ablation synthesis (LAS), a suitable method for the generation of new compounds, has been used to generate clusters from As-Te mixtures, an As-Te glass and Au-As-Te nano-composites. METHODS: Chalcogenide glass nano-layers prepared via Physical Vapour Deposition – thermal evaporation were characterized using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). LAS with laser desorption ionisation quadrupole ion trap time-of-flight mass spectrometry (LDI QIT TOFMS) was used for the generation and analysis of new AuxAsmTen clusters. The stoichiometry of the clusters was determined via isotopic envelope modelling. RESULTS: A simple procedure for the preparation of the Au-As-Te nano-composite was developed. From As-Te mixtures only five binary AsmTen clusters were generated, while from a glass layer 10 binary AsmTen clusters were identified, because during the deposition of the glass the elements reacted with each other to form a complex three-dimensional (3D) structure. Using LAS on the Au-As-Te nano-composite leads to the formation of six unary Ten (n=1–6), 16 binary (AsmTen and AuxTen), and 31 ternary AuxAsmTen clusters. CONCLUSIONS: 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. ER - ŠTĚPÁNOVÁ, Vlasta, Lubomír PROKEŠ, Pavel SLAVÍČEK, Milan ALBERTI a Josef HAVEL. 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. \textit{Rapid Communications in Mass Spectrometry}. 2015, roč.~29, č.~11, s.~1000-1008. ISSN~0951-4198. Dostupné z: https://dx.doi.org/10.1002/rcm.7193.
|
