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

作者：Tomalova Iva; Lee Chia Hsin; Chen Wen Tsen; Chiang Cheng Kang; Chang Huan Tsung^*; Preisler Jan

来源：Journal of the American Society for Mass Spectrometry, 2013, 24(2): 305-308.

DOI：10.1007/s13361-012-0541-5

• Nanomaterials
• Gold nanoparticle
• Surface-assisted laser desorption/ionization mass spectrometry
• SALDI
• Nanoparticle formation process

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.

• 出版日期2013-2