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
Structural study of atomically precise doped Au38-Ag NCs@ZIF-8 electrode material for energy storage application
Tehseen Nawaz,Muhammad Fayyaz Ahmad,Mohd. Zahid Ansari,Iftikhar Hussain,Xi Chen,Li-Juan Liu,Rajat Walia,Shengli Zhuang,Kai Zhang,Jian He +9 more
TL;DR: In this article , the structural changes of doped Au38−xAgx [email protected] electrode material were systematically revealed and the effect of heteroatom doping, synergistic effect, reduced HOMO-LUMO gap (HLG) of highly distorted doped AU38−exAgx electrode material resulted in enhanced electronic transfer kinetics, ultimately improving specific capacitance 2.2 times higher than the parent monometallic Au38 NCs.
Book ChapterDOI
Self-assembly of metal nanoclusters in colloid science
TL;DR: In this article , a comprehensive review and summary of relevant literature about colloidal self-assembly of metal nanoclusters is presented, and some instructive strategies for manipulating multiple noncovalent interactions between metal NCs to construct more sophisticated aggregation structures with desired properties.
Journal ArticleDOI
DFT Insights into the Variety in the Coordination Modes of the Equatorial Halides in [Au13Ag12(PR3)10X8]+ (X=Cl/Br) Clusters.
TL;DR: In this article , density functional theory (DFT) calculations were conducted to investigate the correlation of the series of isomeric [Au 13 Ag 12 (PR 3 ) 10 X 8 ] + (X=Cl/Br) clusters, which are mainly differentiated by the coordination mode of the equatorial halides (μ 2 -, μ 3 - and μ 4 -) in the rod-like, bi-icosahedral framework.
Journal ArticleDOI
Structurally Flexible Au-Cu Alloy Nanoclusters Enabling Efficient Triplet Sensitization and Photon Upconversion.
Daichi Arima,Masaaki Mitsui +1 more
TL;DR: In this paper , a structurally flexible Au-Cu alloy nanocluster, [Au4Cu4(S-Adm)5(DPPM)2]-(Au 4Cu4; S-Am = 1-adamantanethiolate, DPPM = bis(diphenylphosphino)methane), exhibited favorable sensitizer properties and superior photon upconversion performance.
References
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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.