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
Understanding the Chemical Insights of Staple Motifs of Thiolate-Protected Gold Nanoclusters.
TL;DR: This work provides a thorough understanding of the structure and bonding pattern of thiolate ligands of Au nanoclusters, which is important for the rational design of ligands-protected Au Nanoclusters.
Journal ArticleDOI
Strict DNA Valence Control in Ultrasmall Thiolate-Protected Near-Infrared-Emitting Gold Nanoparticles.
TL;DR: A facile strategy using phosphorothioates-modified DNA (psDNA) as a template for in situ growth of near-infrared (NIR)-emitting AuNPs with precisely controlled DNA valence provides a new pathway for development of surface-functionalizable ultrasmall metal nanoplatforms toward various downstream applications.
Journal ArticleDOI
Ratiometric fluorescent probe for ascorbic acid detection based on MnO2 nanosheets, gold nanoclusters and thiamine
TL;DR: In this article, an ascorbic acid (AA) sensing platform by employing MnO2 nanosheets and gold nanocluster (AuNCs) as a ratiometric fluorescent probe has been reported.
Journal ArticleDOI
A turn-off-on near-infrared photoluminescence sensor for sequential detection of Fe3+ and ascorbic acid based on glutathione-capped gold nanoclusters.
TL;DR: A turn-off-on NIR PL sensing strategy can be constructed for sequential detection of Fe3+ and AA with the linear range of 0.7-180 μM and 0.5-120 μM, respectively and has been applied to the determination of Fe 3+ andAA in real samples with satisfactory results.
Journal ArticleDOI
Composition‐Dependent Enzyme Mimicking Activity and Radiosensitizing Effect of Bimetallic Clusters to Modulate Tumor Hypoxia for Enhanced Cancer Therapy
Yue Hua,Zi-Hui Shao,Xi-Ming Luo,Zhao-Yang Wang,Junqi Liu,Xueli Zhao,Xiaoyuan Chen,Shuang-Quan Zang +7 more
TL;DR: In this article , atomically precise alloy clusters Pt2M4 (M = Au, Ag, Cu) are synthesized with bright luminescence and adequate biocompatibility, and their composition-dependent enzyme mimicking activity and radiosensitizing effect is explored.
References
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Omar M. Yaghi,Michael O'Keeffe,Nathan W. Ockwig,Hee K. Chae,Hee K. Chae,Mohamed Eddaoudi,Jaheon Kim +6 more
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Aggregation-Induced Emission: Together We Shine, United We Soar!
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Aggregation-induced emission
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?
TL;DR: A comprehensive review of current research activities that center on the shape-controlled synthesis of metal nanocrystals, including a brief introduction to nucleation and growth within the context of metal Nanocrystal synthesis, followed by a discussion of the possible shapes that aMetal nanocrystal might take under different conditions.
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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.