Journal ArticleDOI
Tailoring the photoluminescence of atomically precise nanoclusters.
Xi Kang,Manzhou Zhu +1 more
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TLDR
Promising applications of metal nanoclusters are reviewed, with particular focus on their potential to impact the fields of chemical sensing, bio-imaging, and bio-labeling, and scope for improvements and future perspectives of these novel nanomaterials are highlighted.Abstract:
Due to their atomically precise structures and intriguing chemical/physical properties, metal nanoclusters are an emerging class of modular nanomaterials. Photo-luminescence (PL) is one of their most fascinating properties, due to the plethora of promising PL-based applications, such as chemical sensing, bio-imaging, cell labeling, phototherapy, drug delivery, and so on. However, the PL of most current nanoclusters is still unsatisfactory-the PL quantum yield (QY) is relatively low (generally lower than 20%), the emission lifetimes are generally in the nanosecond range, and the emitted color is always red (emission wavelengths of above 630 nm). To address these shortcomings, several strategies have been adopted, and are reviewed herein: capped-ligand engineering, metallic kernel alloying, aggregation-induced emission, self-assembly of nanocluster building blocks into cluster-based networks, and adjustments on external environment factors. We further review promising applications of these fluorescent nanoclusters, with particular focus on their potential to impact the fields of chemical sensing, bio-imaging, and bio-labeling. Finally, scope for improvements and future perspectives of these novel nanomaterials are highlighted as well. Our intended audience is the broader scientific community interested in the fluorescence of metal nanoclusters, and our review hopefully opens up new horizons for these scientists to manipulate PL properties of nanoclusters. This review is based on publications available up to December 2018.read more
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Journal ArticleDOI
Face-Centered-Cubic Ag Nanoclusters: Origins and Consequences of the High Structural Regularity Elucidated by Density Functional Theory Calculations
TL;DR: Density functional theory calculations indicate that the high structural regularity originates from the strong diffusing capacity of the Ag(5d) and S(3p) orbits, and the angular momentum distribution of the formed superatomic orbits.
Journal ArticleDOI
Synthesis, Structural Characterization, and DFT Investigations of [MxM'5-xFe4(CO)16]3- (M, M' = Cu, Ag, Au; M ≠ M') 2-D Molecular Alloy Clusters.
Beatrice Berti,Marco Bortoluzzi,Cristiana Cesari,Cristina Femoni,Maria Carmela Iapalucci,Leonardo Soleri,Stefano Zacchini +6 more
TL;DR: The molecular nature of these clusters allows their structures to be fully revealed with atomic precision, resulting in the elucidation of the bonding parameters that determine the distribution of the different metals within their metal cores.
Journal ArticleDOI
Surface environment complication makes Ag29 nanoclusters more robust and leads to their unique packing in the supracrystal lattice
TL;DR: Wang et al. as discussed by the authors proposed a surface environment complication strategy to endow Ag29 nanoclusters with high robustness by substituting PPh3 with bidentate PPh2py with dual coordination sites (i.e., P and N).
Journal ArticleDOI
Intercluster exchanges leading to hydride-centered bimetallic clusters: a multi-NMR, X-ray crystallographic, and DFT study.
Yu-Jie Zhong,Jian-Hong Liao,Tzu-Hao Chiu,Ying-Yann Wu,Samia Kahlal,Michael J. McGlinchey,Jean-Yves Saillard,Chen-Wei Liu +7 more
TL;DR: In this article, a series of bimetallic hydride clusters were synthesized via inter-cluster reactions and the presence of individual compounds in solution is the result of a (dynamic) chemical equilibrium primarily driven by metal exchanges.
Journal ArticleDOI
Heterocyclic thiol protected supramolecular self-assembly of silver nanoclusters for ultrasensitive detection of toxic Hg (II) ions in nanomolar range
TL;DR: In this paper, a facile synthesis of 2-mercaptobenzothiazole (MBT) protected self-assembled AgNCs (SA-AgNCs) in acetone-water medium was demonstrated.
References
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TL;DR: In this critical review, recent progress in the area ofAIE research is summarized and typical examples of AIE systems are discussed, from which their structure-property relationships are derived.
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Shape‐Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics?
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Nanostructures in Biodiagnostics
Nathaniel L. Rosi,Chad A. Mirkin +1 more
TL;DR: Nathaniel L. Rosi focuses on the rational assembly of DNA-modified nanostructures into larger-scale materials and their roles in biodiagnostic screening for nucleic acids.