Analysis of the Formation Process of Gold Nanoparticles by Surface-Assisted Laser Desorption/Ionization Mass Spectrometry |
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| Authors: | Iva Tomalová Chia-Hsin Lee Wen-Tsen Chen Cheng-Kang Chiang Huan-Tsung Chang Jan Preisler |
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| Institution: | 1. CEITEC MU and Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, Czech Republic
2. Department of Chemistry, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei, 106, Taiwan
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| Abstract: | 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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