Laser ablation synthesis of new gold tellurides using tellurium and nanogold as precursors. Laser desorption ionisation time‐of‐flight mass spectrometry. (11th June 2013)

• Record Type: Journal Article
• Authors: Švihlová, Katarína; Prokeš, Lubomír; Skácelová, Dana; Peña‐Méndez, Eladia María; Havel, Josef
• Is Part Of: Rapid communications in mass spectrometry. Volume 27:Number 14(2013)
• Page Start: 1600
• Page End: 1606
• Publication Date: 2013-06-11
• Subjects: Mass spectrometry -- Periodicals; 543.65
• DOI: 10.1002/rcm.6613
• Languages: English
• ISSNs: 0951-4198

Abstract

Abstract : 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.