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

Autor:	Kubáček, Pavel, Prokeš, Lubomír, Pamreddy, Annapurna, Peña‐Méndez, Eladia María, Conde, José Elias, Alberti, Milan, Havel, Josef
Předmět:	ARSENIC compounds ARSENIC isotopes LASER ablation DESORPTION ionization mass spectrometry MIXTURES STABLE isotopes
Zdroj:	Rapid Communications in Mass Spectrometry: RCM; 5/30/2018, Vol. 32 Issue 10, p789-800, 12p
Abstrakt:	Rationale: Only a few arsenic phosphides are known. A high potential for the generation of new compounds is offered by Laser Ablation Synthesis (LAS) and when Laser Desorption Ionization (LDI) is coupled with simultaneous Time‐Of‐Flight Mass Spectrometry (TOFMS), immediate identification of the clusters can be achieved. Methods: LAS was used for the generation of arsenic phosphides via laser ablation of phosphorus–arsenic mixtures while quadrupole ion trap time‐of‐flight mass spectrometry (QIT‐TOFMS) was used to acquire the mass spectra. Results: Many new AsmPn± clusters (479 binary and 369 mono‐elemental) not yet described in the literature were generated in the gas phase and their stoichiometry determined. The likely structures for some of the observed clusters arbitrary selected (20) were computed by density functional theory (DFT) optimization. Conclusions: LAS is an advantageous approach for the generation of new AsmPn clusters, while mass spectrometry was found to be an efficient technique for the determination of cluster stoichiometry. The results achieved might inspire the synthesis of new materials. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Plný text