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
Citations
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Journal ArticleDOI
Tailoring the NIR‐II Photoluminescence of Single Thiolated Au <sub>25</sub> Nanoclusters by Selective Binding to Proteins**
TL;DR: In this article , a simple route to incorporate a preformed Au25 nanocluster into a model bovine serum albumin (BSA) protein is reported. But the method is not suitable for the detection of biomolecules in a cellular environment by live imaging.
Journal ArticleDOI
Effects of protecting groups on luminescent metal nanoclusters: spectroscopic signatures and applications
TL;DR: In this article , the authors highlight a holistic approach as to how ligands and templates can monitor the stability of luminescent metal nanoclusters, tune their spectroscopic signatures, and alter their applications.
Journal ArticleDOI
On the Origin of Photoluminescence Enhancement in Biicosahedral AgxAu25−x Nanoclusters (x = 0–13) and Their Application to Triplet–Triplet Annihilation Photon Upconversion
TL;DR: In this article , the origin of the photoluminescence in the AgxAu25−x system and its remarkable enhancement are investigated on the basis of spectroscopic investigations of the PL behavior and its quenching by an organic fluorophore.
Journal ArticleDOI
In-situ generation and global property profiling of metal nanoclusters by ultraviolet laser dissociation-mass spectrometry
Zheyi Liu,Zhaoxia Jin,Chaonan Cui,Zhixun Luo,Bing Yang,You Jiang,Caixia Li,Zhipeng Wang,Xiaolei Wang,Liang Fang,Gao Li,Fangjun Wang,Chunlei Xiao,Xueming Yang +13 more
Journal ArticleDOI
A Temperature-Sensitive Luminescent Ag42 Nanocluster Supported by TertButyl Thiol Ligands.
TL;DR: Compound [Ag42S5(SBut)25(CF3COO)4(CO3)0.5·CH2Cl2·4CH3OH·9DMF (1) has been obtained and well-defined and temperature-sensitive luminescent property of 1 has been investigated.
References
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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.