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Structure and Properties of Metal Nanoclusters

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Nanochemistry".

Deadline for manuscript submissions: closed (29 February 2020) | Viewed by 9127

Special Issue Editor


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Guest Editor
Institut Lumière Matière, Université Claude Bernard Lyon 1, Villeurbanne, France
Interests: metal nanostructures; metal nanoclusters; organometallics; spectroscopic properties; nanoplasmonics; electronic structures; theoretical and computational chemistry; computational material science; density functional theory; TDDFT
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Special Issue Information

Dear Colleagues,

Research on metal nanoclusters has seen impressive progress in recent decades, thanks to breakthroughs in both experimental and theoretical approaches. Application outlooks appear to be increasingly promising (e.g., catalysis, chemical reactivity, optics, electronics, etc.), since chemical and physical properties can not only be tailored by modifying the composition, size, or morphology of the metal nanocluster, but are also very sensitive to the environment (i.e., ligands, solvent, solid matrix, etc.).

Metal nanoclusters can be prepared using a physical or chemical approach. Experimental syntheses begin to be able to control size and structure by adjusting the reaction parameters, precursor composition, and reducing and stabilizing agents. Investigating the intrinsic properties of metal nanoclusters remains a very active domain of research, especially concerning the characterization of the structure, the reactivity, and the electronic and optical properties. Additionally, studying the effects of the environment on the chemical and physical properties of metal nanoclusters is now a major challenge for both theoreticians and experimentalists.

This Special Issue aims to assemble the recent relevant scientific achievements in the field of metal nanoclusters and their structure and properties (i.e., synthesis, stability, electronics, optics, reactivity, electrochemical, etc.). Both experiments and theoretical calculations are welcome.

Dr. Franck Rabilloud
Guest Editor

Manuscript Submission Information

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Keywords

  • metal nanoclusters
  • synthesis
  • structure
  • reactivity
  • nanoplasmonics
  • DFT
  • theoretical and computational chemistry

Published Papers (2 papers)

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Research

10 pages, 4031 KiB  
Article
Silver Nanoclusters Encapsulated into Metal–Organic Frameworks for Rapid Removal of Heavy Metal Ions from Water
by Pengfei Zhuang, Peng Zhang, Kuo Li, Beena Kumari, Dan Li and Xifan Mei
Molecules 2019, 24(13), 2442; https://doi.org/10.3390/molecules24132442 - 3 Jul 2019
Cited by 17 | Viewed by 4380
Abstract
Metal nanomaterials have been reported as effective absorbents for the removal of pollutants in the water system, but the release of ions from these nanomaterials brings another concern. Herein, silver nanoclusters (AgNCs) were encapsulated in porous metal-organic frameworks of ZIF-8 (MOF-AgNCs). Compared to [...] Read more.
Metal nanomaterials have been reported as effective absorbents for the removal of pollutants in the water system, but the release of ions from these nanomaterials brings another concern. Herein, silver nanoclusters (AgNCs) were encapsulated in porous metal-organic frameworks of ZIF-8 (MOF-AgNCs). Compared to AgNCs, the release of Ag+ significantly decreases from MOF-AgNCs, indicating that the product presents a lower threat to the environment. The MOF-AgNCs were employed for the rapid removal of heavy metals, such as Pb2+ and Mn2+, from water. The mechanism and removal efficiencies were investigated. Full article
(This article belongs to the Special Issue Structure and Properties of Metal Nanoclusters)
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13 pages, 2602 KiB  
Article
Identifying Reducing and Capping Sites of Protein-Encapsulated Gold Nanoclusters
by Yu-Chen Hsu, Mei-Jou Hung, Yi-An Chen, Tsu-Fan Wang, Ying-Ru Ou and Shu-Hui Chen
Molecules 2019, 24(8), 1630; https://doi.org/10.3390/molecules24081630 - 25 Apr 2019
Cited by 13 | Viewed by 4359
Abstract
The reducing and capping sites along with their local structure impact photo properties of the red bovine serum albumin-capped Au nanocluster (BSA-AuNC), however, they are hard to identify. We developped a workflow and relevant techniques using mass spectrometry (MS) to identify the reducing [...] Read more.
The reducing and capping sites along with their local structure impact photo properties of the red bovine serum albumin-capped Au nanocluster (BSA-AuNC), however, they are hard to identify. We developped a workflow and relevant techniques using mass spectrometry (MS) to identify the reducing and capping sites of BSA-AuNCs involved in their formation and fluorescence. Digestion without disulfide cleavages yielded an Au core fraction exhibiting red fluorescence and [AunSm] ion signals and a non-core fraction exhibiting neither of them. The core fraction was identified to mainly be comprised of peptides containing cysteine residues. The fluorescence and [AunSm] signals were quenched by tris(2-carboxyethyl)phosphine, confirming that disulfide groups were required for nanocluster stabilization and fluorescence. By MS sequencing, the disulfide pairs, C75–C91/C90–C101 in domain IA, C315–C360/C359–C368 in domain IIB, and C513–C558/C557–C566 in domain IIIB, were identified to be main capping sites of red AuNCs. Peptides containing oxidized cysteines (sulfinic or cysteic acid) were identified as reducing sites mainly in the non-core fraction, suggesting that disulfide cleavages by oxidization and conformational changes contributed to the subsequent growth of nanoclusters at nearby intact disulfide pairs. This is the first report on precise identification of the reducing and capping sites of BSA-AuNCs. Full article
(This article belongs to the Special Issue Structure and Properties of Metal Nanoclusters)
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