Ligand‐Mediated Highly Ordered Aggregation of 5‐Mercapto‐2‐Nitrobenzoic Acid Protected Atomically Precise Silver Nanocluster
Source abstract
Abstract
Abstract Understanding self‐assembly of atomically precise nanoclusters is of paramount interest in designing various aggregated super‐structures. Here pH‐mediated self‐assembly is reported of atomically precise Ag 44 (MNBA) 30 (MNBA = 5‐mercapto‐2‐nitrobenzoic acid) nanoclusters in aqueous solution. These nanoclusters formed hexagonal close‐packed (hcp) structures when the pH of the solution is reduced from basic to neutral. High‐resolution transmission microscopy result confirms bilayer and multilayer assembly at neutral pH. X‐ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) analysis, and molecular dynamics simulation delineate ligand‐mediated inter‐cluster interactions such as ligand to metal core coordination, H─bonding and π–π interactions playing a crucial role in the formation of the hexagonal close‐packed self‐assembled structure.
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Research context
OpenAlex topics: Nanocluster Synthesis and Applications · Gold and Silver Nanoparticles Synthesis and Applications · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Nano Science and Technology Indian Institute of Technology Kharagpur Kharagpur 721302 India
Department of Chemistry Indian Institute of Technology Hauz Khas Delhi New Delhi 110016 India
Funding
Science and Engineering Research Board · Scheme for Promotion of Academic and Research Collaboration
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