Generation of novel AumSen clusters via laser ablation
synthesis. Laser desorption ionisation time-of-flight mass
spectrometry

k 2014

Generation of novel AumSen clusters via laser ablation synthesis. Laser desorption ionisation time-of-flight mass spectrometry

PROKEŠ, Lubomír; Eladia Maria PENA-MENDEZ; Filippo AMATO; Milan ALBERTI; Pavel KUBÁČEK et al.

Základní údaje

Originální název

Generation of novel AumSen clusters via laser ablation synthesis. Laser desorption ionisation time-of-flight mass spectrometry

Autoři

PROKEŠ, Lubomír; Eladia Maria PENA-MENDEZ; Filippo AMATO; Milan ALBERTI; Pavel KUBÁČEK a Josef HAVEL

Vydání

International Symposium on Metal Complexes ISMEC 2014, 2014

Další údaje

Jazyk

angličtina

Typ výsledku

Prezentace na konferencích

Obor

10406 Analytical chemistry

Stát vydavatele

Itálie

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/14:00073737

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Mass spectrometry; gold selenides; nano-composite

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 27. 4. 2015 15:32, Ing. Andrea Mikešková

Anotace

V originále

Several gold selenium complexes are known (e.g., [Au 2 (Se 2 )(Se 3 )] 2- , [Au 2 (Se 2 )(Se 4 )] 2- and [Au 2 Se 2 (Se 4 ) 2 ] 2- ). Minerals such as fischesserite (Ag 3 AuSe 2 ), kurilite ((Au,Ag) 2 (Te,Se,S) 2 ) and petrovskite ((AuAg)(S,Se)) are found in nature. Laser desorption ionisation time-of-flight mass spectrometry (LDI TOF MS) is powerful technique to generate and study clusters formed during laser ablation of various materials leading to metal chalcogenides [1] or gold carbides [2], for example. The aim of this work is to study the generation of Au m Se n clusters via laser ablation synthesis (LAS) using mixtures of GNPs (or auric acid) with selenium in various molar ratios as precursors. We have found that GNPs are chemisorbed on selenium surface leading to the formation of a kind of nano-composite as confirmed by scanning electron microscope (SEM) analysis. The LAS from various precursors and nano-composites leads to the generation of several series of Au m Se n clusters which stoichiometry was determined. Example of mass spectra showing some of the detected Au m Se n clusters is given in Fig. 1. Over 30 new gold selenide clusters were identified: AuSe 2- , AuSe 3- , AuSe 4- , AuSe 5- , AuSe 6- , AuSe 7- , AuSe 8- , AuSe 9- , AuSe 10- , Au 2 Se - , Au 2 Se 2- , Au 2 Se 3- , Au 2 Se 4- , Au 2 Se 5-, Au 2 Se 6-, Au 2 Se 7- , Au 2 Se 8- , Au 3 Se - , Au 3 Se 2- , Au 3 Se 3-, Au 3 Se 4- , Au 3 Se 5- , Au 4 Se - , Au 4 Se 2- , Au 4 Se 3- , etc. Understanding the nature and chemistry of such clusters can inspire the development of novel routes for the synthesis of new compounds. Example of possible stabilization strategy has been reported for the [NaAu 12 Se 8 ] 3- complex [3]. Computed structures of selected gold selenides generated in this work via LAS are given in Fig. 2. Concluding, (i) LAS is advantageous technique to generate novel un-usual gold selenides and (ii) the stoichiometry of Au m Se n clusters generated might inspire synthesis of new Au-Se materials with unique properties.

Návaznosti

ED2.1.00/03.0086, projekt VaV

Název: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy

GA13-05082S, projekt VaV

Název: Analýza a aplikace plazmatických procesů pro přípravu tenkých vrstev amorfních chalkogenidů

Investor: Grantová agentura ČR, Analýza a aplikace plazmatických procesů pro přípravu tenkých vrstev amorfních chalkogenidů

Citovat

PROKEŠ, Lubomír; Eladia Maria PENA-MENDEZ; Filippo AMATO; Milan ALBERTI; Pavel KUBÁČEK a Josef HAVEL. Generation of novel AumSen clusters via laser ablation synthesis. Laser desorption ionisation time-of-flight mass spectrometry. In International Symposium on Metal Complexes ISMEC 2014. 2014.

@proceedings{1192575,
   author = {Prokeš, Lubomír and PenaandMendez, Eladia Maria and Amato, Filippo and Alberti, Milan and Kubáček, Pavel and Havel, Josef},
   booktitle = {International Symposium on Metal Complexes ISMEC 2014},
   keywords = {Mass spectrometry; gold selenides; nano-composite},
   language = {eng},
   title = {Generation of novel AumSen clusters via laser ablation synthesis. Laser desorption ionisation time-of-flight mass spectrometry},
   year = {2014}
}

TY  - CONF
ID  - 1192575
AU  - Prokeš, Lubomír - Pena-Mendez, Eladia Maria - Amato, Filippo - Alberti, Milan - Kubáček, Pavel - Havel, Josef
PY  - 2014
TI  - Generation of novel AumSen clusters via laser ablation synthesis. Laser desorption ionisation time-of-flight mass spectrometry
KW  - Mass spectrometry
KW  - gold selenides
KW  - nano-composite
N2  - Several gold selenium complexes are known (e.g., [Au 2 (Se 2 )(Se 3 )] 2- , [Au 2 (Se 2 )(Se 4 )] 2- and [Au 2 Se 2 (Se 4 ) 2 ] 2- ). Minerals such as fischesserite (Ag 3 AuSe 2 ), kurilite ((Au,Ag) 2 (Te,Se,S) 2 ) and petrovskite ((AuAg)(S,Se)) are found in nature. Laser desorption ionisation time-of-flight mass spectrometry (LDI TOF MS) is powerful technique to generate and study clusters formed during laser ablation of various materials leading to metal chalcogenides [1] or gold carbides [2], for example. The aim of this work is to study the generation of Au m Se n clusters via laser ablation synthesis (LAS) using mixtures of GNPs (or auric acid) with selenium in various molar ratios as precursors. We have found that GNPs are chemisorbed on selenium surface leading to the formation of a kind of nano-composite as confirmed by scanning electron microscope (SEM) analysis. The LAS from various precursors and nano-composites leads to the generation of several series of Au m Se n clusters which stoichiometry was determined. Example of mass spectra showing some of the detected Au m Se n clusters is given in Fig. 1. Over 30 new gold selenide clusters were identified: AuSe 2- , AuSe 3- , AuSe 4- , AuSe 5- , AuSe 6- , AuSe 7- , AuSe 8- , AuSe 9- , AuSe 10- , Au 2 Se - , Au 2 Se 2- , Au 2 Se 3- , Au 2 Se 4- , Au 2 Se 5-, Au 2 Se 6-, Au 2 Se 7- , Au 2 Se 8- , Au 3 Se - , Au 3 Se 2- , Au 3 Se 3-, Au 3 Se 4- , Au 3 Se 5- , Au 4 Se - , Au 4 Se 2- , Au 4 Se 3- , etc. Understanding the nature and chemistry of such clusters can inspire the development of novel routes for the synthesis of new compounds. Example of possible stabilization strategy has been reported for the [NaAu 12 Se 8 ] 3- complex [3]. Computed structures of selected gold selenides generated in this work via LAS are given in Fig. 2. Concluding, (i) LAS is advantageous technique to generate novel un-usual gold selenides and (ii) the stoichiometry of Au m Se n clusters generated might inspire synthesis of new Au-Se materials with unique properties.
ER  -

PROKEŠ, Lubomír; Eladia Maria PENA-MENDEZ; Filippo AMATO; Milan ALBERTI; Pavel KUBÁČEK a Josef HAVEL. Generation of novel AumSen clusters via laser ablation synthesis. Laser desorption ionisation time-of-flight mass spectrometry. In \textit{International Symposium on Metal Complexes ISMEC 2014}. 2014.

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