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Analysis of the Formation Process of Gold Nanoparticles by Surface-Assisted Laser Desorption/Ionization Mass Spectrometry

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TOMALOVÁ Iva LEE Chia-Hsin CHEN Wen-Tsen CHIANG Cheng-Kang CHANG Huan-Tsung PREISLER Jan

Year of publication 2013
Type Article in Periodical
Magazine / Source Journal of The American Society for Mass Spectrometry
MU Faculty or unit

Central European Institute of Technology

Field Analytic chemistry
Keywords Nanomaterials; Gold nanoparticle; Surface-assisted laser desorption/ionization mass spectrometry; SALDI; Nanoparticle formation process
Description Chemical reactions of reducing agents in the gold nanoparticle (AuNP) formation process were characterized using surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS). As the reaction of the AuNPs progresses, the produced AuNPs can serve as an efficient SALDI substrate. SALDI-MS revealed that the reducing agents and their oxidation products can be determined in the mass spectra. With respect to the transmission electron microscopic and UV-Vis spectroscopic examination of AuNPs, SALDI-MS results confirm not only the tendency toward AuNPs formation, but also reflect the information of the redox reaction process. Our results provide useful information for developing SALDI-MS methods to explore the chemical information regarding the surface behavior between adsorbates and nanomaterials.
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