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Mechanism governing the formation of atomically precise dithiolate-protected gold nanoclusters

2026/01/01 by S. Yoshikawa, Tokuhisa Kawawaki, Sakiat Hossain +1 · 1 voice
Chemistry · Materials Science · #Gold and Silver Nanoparticles Synthesis and Applications #Metal-Organic Frameworks: Synthesis and Applications #Nanocluster Synthesis and Applications

paper · pdf · doi:10.1039/d6sc00460a

openalex publication_date 2026/01/01 · openalex created_date 2026/03/14 · openalex updated_date 2026/06/30

Abstract

, processes such as alloying can induce structural destabilization. Gold (Au) NCs can be protected by introducing multi-site thiolates (SR), which form exceptionally strong Au-S bonds, thus enhancing the stability of the NCs and expanding their practical applicability. However, multi-site SR protection using bidentate ligands often leads to undesirable polymerization due to inter-NC cross-linking. The present study addresses this issue by elucidating the mechanism governing the formation of Au NCs co-protected by both bidentate (SR'S) and monodentate (SR) ligands. The key impacts of ligand flexibility and site-specific exchange kinetics are identified, thereby providing crucial insights to support the strategic design and synthesis of stable, multi-site SR-protected Au NCs with rigid, well-defined architectures.

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