J 2016

Structural elucidation of AgAsS2 glass by the analysis of clusters formed during laser desorption ionisation applying quadrupole ion trap time-of-flight mass spectrometry

MAWALE, Ravi, Milan ALBERTI, Zhang BO, Max FRAENKL, Tomas WAGNER et. al.

Basic information

Original name

Structural elucidation of AgAsS2 glass by the analysis of clusters formed during laser desorption ionisation applying quadrupole ion trap time-of-flight mass spectrometry

Authors

MAWALE, Ravi (356 India, belonging to the institution), Milan ALBERTI (203 Czech Republic, belonging to the institution), Zhang BO (203 Czech Republic), Max FRAENKL (203 Czech Republic), Tomas WAGNER (203 Czech Republic) and Josef HAVEL (203 Czech Republic, belonging to the institution)

Edition

Rapid Communications in Mass Spectrometry, 2016, 0951-4198

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.998

RIV identification code

RIV/00216224:14310/16:00087780

Organization unit

Faculty of Science

UT WoS

000369996300005

Keywords in English

Glass clusters mass spectrometry

Tags

Tags

International impact
Změněno: 26/4/2017 21:02, Ing. Andrea Mikešková

Abstract

V originále

RATIONALE: The structure of AgAsS2 glass, which has a broad range of applications, is still not well understood and asystematic mass spectrometric analysis of AgAsS2 glass is currently not available. Elucidation of the structure should help in the development of this material. METHODS: The AgAsS2 glass was prepared by the melt-quenched technique. Laser desorption ionisation LDI using quadrupole ion trap time-of-flight mass spectrometry QIT-TOFMS was used to follow the generation of AgmAsnSx clusters.The stoichiometry of the clusters generated was determined via collision-induced dissociation CID and modelling of isotopic patterns. The AgAsS2 glass was characterised by transmission electron microscopy TEM,scanning electron microscopy SEM and energy dispersive X-ray EDX spectroscopy. RESULTS: The LDI of AgAsS2 glass leads to the formation of unary Ag+/and As3+ specie s, 38 binary AsnSx,AgmSx,and 98 ternary AgmAsnSx singly charged clusters. The formation of silver-rich nano-grains during AgAsS2 glass synthesis has been identified using TEM analysis and also verified by QIT-TOFMS.CONCLUSIONS: TOFMS was shown to be a useful technique to study the generation of AgmAsnSx clusters. SEM, TEM and EDX analysis proved that the structure of AgAsS2 glass is ‘grain-like’ where grains are either: 1 Silver-rich ‘islands’ Agm, mup to 39 connected by arsenic andor sulfur or arsenic sulfide chains or 2 silver sulfide Ag2Smm =9–20 clusters alsosimilarly inter-connected. This obtained structural information may be useful for the development of ultra-high-densityphase-change storage and memory devices using this kind of glass as a base.

Links

ED2.1.00/03.0086, research and development project
Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
GA13-05082S, research and development project
Name: Analýza a aplikace plazmatických procesů pro přípravu tenkých vrstev amorfních chalkogenidů
Investor: Czech Science Foundation