Interactions between Ultrastable Na4Ag44(SR)30 Nanoclusters and Coordinating Solvents: Uncovering the Atomic-Scale Mechanism
Abstract
Recently, silver nanoclusters have garnered considerable attention after the high-yield synthesis and crystallization of a thiolate-protected silver nanocluster, Na4Ag44(SR)30 (SR, protecting thiolate ligand). One intriguing feature of Na4Ag44(SR)30 is its outstanding stability and resistance to chemical reactions, in striking difference from other silver nanostructures whose susceptibility to oxidation (tarnishing) has been commonly observed and thus limits their applications in nanotechnology. Herein, we report the mechanism on the ultrahigh stability of Na4Ag44(SR)30 by uncovering how coordinating solvents interact with the Na4Ag44(SR)30 nanocluster at the atomic scale. Furthermore, through synchrotron X-ray experiments and theoretical calculations, it was found that strongly coordinating aprotic solvents interact with surface Ag atoms, particularly between ligand bundles, which compresses the Ag core and relaxes surface metalāligand interactions. Furthermore, water was used as a cosolvent to demonstrate that semiaqueous conditions play an important role in protecting exposed surface regions and can further influence the local structure of the silver nanocluster itself. Notably, under semiaqueous conditions, aprotic coordinating solvent molecules preferentially remain on the metal surface while water molecules interact with ligands, and ligand bundling persisted across the varied solvation conditions. This work offers an atomic level mechanism on the ultrahigh stability of the Na4Ag44(SR)30 nanoclusters from the nanocluster-coordinatingmore »
- Authors:
-
- Dalhousie Univ., Halifax, NS (Canada)
- Univ. of Toledo, OH (United States)
- Univ. of California, Riverside, CA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- OSTI Identifier:
- 1712710
- Grant/Contract Number:
- AC05-00OR22725; 0955148; 1905262; AC02-05CH11231; AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Nano
- Additional Journal Information:
- Journal Volume: 14; Journal Issue: 7; Journal ID: ISSN 1936-0851
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; thiolate-silver nanocluster; coordinating solvents; cluster-solvent interactions; x-ray absorption spectroscopy; quantum
Citation Formats
Chevrier, Daniel M., Conn, Brian E., Li, Bo, Jiang, De-en, Bigioni, Terry P., Chatt, Amares, and Zhang, Peng. Interactions between Ultrastable Na4Ag44(SR)30 Nanoclusters and Coordinating Solvents: Uncovering the Atomic-Scale Mechanism. United States: N. p., 2020.
Web. doi:10.1021/acsnano.0c02615.
Chevrier, Daniel M., Conn, Brian E., Li, Bo, Jiang, De-en, Bigioni, Terry P., Chatt, Amares, & Zhang, Peng. Interactions between Ultrastable Na4Ag44(SR)30 Nanoclusters and Coordinating Solvents: Uncovering the Atomic-Scale Mechanism. United States. https://doi.org/10.1021/acsnano.0c02615
Chevrier, Daniel M., Conn, Brian E., Li, Bo, Jiang, De-en, Bigioni, Terry P., Chatt, Amares, and Zhang, Peng. Fri .
"Interactions between Ultrastable Na4Ag44(SR)30 Nanoclusters and Coordinating Solvents: Uncovering the Atomic-Scale Mechanism". United States. https://doi.org/10.1021/acsnano.0c02615. https://www.osti.gov/servlets/purl/1712710.
@article{osti_1712710,
title = {Interactions between Ultrastable Na4Ag44(SR)30 Nanoclusters and Coordinating Solvents: Uncovering the Atomic-Scale Mechanism},
author = {Chevrier, Daniel M. and Conn, Brian E. and Li, Bo and Jiang, De-en and Bigioni, Terry P. and Chatt, Amares and Zhang, Peng},
abstractNote = {Recently, silver nanoclusters have garnered considerable attention after the high-yield synthesis and crystallization of a thiolate-protected silver nanocluster, Na4Ag44(SR)30 (SR, protecting thiolate ligand). One intriguing feature of Na4Ag44(SR)30 is its outstanding stability and resistance to chemical reactions, in striking difference from other silver nanostructures whose susceptibility to oxidation (tarnishing) has been commonly observed and thus limits their applications in nanotechnology. Herein, we report the mechanism on the ultrahigh stability of Na4Ag44(SR)30 by uncovering how coordinating solvents interact with the Na4Ag44(SR)30 nanocluster at the atomic scale. Furthermore, through synchrotron X-ray experiments and theoretical calculations, it was found that strongly coordinating aprotic solvents interact with surface Ag atoms, particularly between ligand bundles, which compresses the Ag core and relaxes surface metalāligand interactions. Furthermore, water was used as a cosolvent to demonstrate that semiaqueous conditions play an important role in protecting exposed surface regions and can further influence the local structure of the silver nanocluster itself. Notably, under semiaqueous conditions, aprotic coordinating solvent molecules preferentially remain on the metal surface while water molecules interact with ligands, and ligand bundling persisted across the varied solvation conditions. This work offers an atomic level mechanism on the ultrahigh stability of the Na4Ag44(SR)30 nanoclusters from the nanocluster-coordinating solvent interaction perspective, and implies that nanocluster-solvent interactions should be carefully considered moving forward for silver nanoclusters, as they can influence the electronic/chemical properties of the nanocluster as well as the surface accessibility of small molecules for potential catalytic and biomedical applications.},
doi = {10.1021/acsnano.0c02615},
journal = {ACS Nano},
number = 7,
volume = 14,
place = {United States},
year = {Fri Jun 19 00:00:00 EDT 2020},
month = {Fri Jun 19 00:00:00 EDT 2020}
}
Web of Science
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