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Laser ablation synthesis of new gold tellurides using tellurium and nanogold as precursors. Laser desorption ionisation time‐of‐flight mass spectrometry
Author(s) -
Švihlová Katarína,
Prokeš Lubomír,
Skácelová Dana,
PeñaMéndez Eladia María,
Havel Josef
Publication year - 2013
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.6613
Subject(s) - chemistry , mass spectrometry , analytical chemistry (journal) , laser ablation , desorption , colloidal gold , tellurium , silicon , laser , adsorption , nanoparticle , inorganic chemistry , chromatography , nanotechnology , materials science , optics , organic chemistry , physics
RATIONALE Only a few gold tellurides are known. However, Laser Ablation Synthesis (LAS) using Laser Desorption Ionisation (LDI) time‐of‐flight mass spectrometry (TOF MS) has high potential for the generation of new compounds. METHODS LDI of nanogold‐Te conjugate using a nitrogen laser 337 nm was applied while the mass spectra were recorded in positive and negative ion modes using a quadrupole ion trap‐TOF mass spectrometer equipped with a reflectron. Diffuse coplanar surface barrier discharge was applied for the plasma treatment of glass and silicon surfaces. RESULTS A form of nanogold‐Te conjugate was prepared and found suitable for LAS of gold tellurides. Several new Au m Te n ( m = 1–11; n = 1–4) clusters were identified. An excess of nanogold and chloride or an excess of auric acid caused the formation of mixed Au m Te n Cl x clusters. The nanogold‐Te conjugate can be deposited from an aqueous suspension onto glass while the deposition is strongly enhanced if the surface is modified by plasma. CONCLUSIONS 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. Copyright © 2013 John Wiley & Sons, Ltd.