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
Atomically precise alloy nanoclusters: syntheses, structures, and properties.
TL;DR: This review provides a comprehensive synthetic toolbox and controllable doping modes so as to achieve more alloy nanoclusters with customized compositions, structures, and properties for applications.
Journal ArticleDOI
AIE Triggers the Circularly Polarized Luminescence of Atomically Precise Enantiomeric Copper(I) Alkynyl Clusters
Miao-Miao Zhang,Xi-Yan Dong,Zhao-Yang Wang,Hai-Yang Li,Shi-Jun Li,Xueli Zhao,Shuang-Quan Zang +6 more
TL;DR: This paper designed a pair of chiral alkynyl ligands, (R/S)-2-diphenyl-2-hydroxylmethylpyrrolidine-1-propyne (abbreviated as R/S-DPM), and for the first time, successfully prepared and characterized single crystals of optically pure enantiomeric pair of atomically-precise copper(I) clusters.
Journal ArticleDOI
Ultrastable atomically precise chiral silver clusters with more than 95% quantum efficiency
Zhen Han,Xi-Yan Dong,Peng Luo,Si Li,Zhao-Yang Wang,Shuang-Quan Zang,Thomas C. W. Mak,Thomas C. W. Mak +7 more
TL;DR: Enantiomers of an octahedral Ag6 cluster prepared via one-step synthesis using designed chiral ligands at ambient temperature are reported, revealing that thermally activated delayed fluorescence is responsible for the high PLQY, which combines chirality in excited states to generate strong circularly polarized luminescence.
Journal ArticleDOI
Endohedrally Doped Cage Clusters
TL;DR: This comprehensive review presents results of many such developments in this fast-growing field including endohedrally doped Al, Ga, and In clusters, and performs ab initio calculations to present updated results of the most stable atomic structures and fundamental electronic properties of the endohedral doped cage clusters.
Journal ArticleDOI
A New Class of NIR-II Gold Nanocluster-Based Protein Biolabels for In Vivo Tumor-Targeted Imaging.
Xiaorong Song,Xiaorong Song,Wei Zhu,Xiaoguang Ge,Renfu Li,Shihua Li,Xian Chen,Jibin Song,Jianping Xie,Xueyuan Chen,Xueyuan Chen,Huanghao Yang,Huanghao Yang +12 more
TL;DR: The renal-clearable and host-guest recognition-based NIR-II biolabels developed in this study provide a promising platform to monitor the physiological behaviors of biomolecules in living organisms.
References
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Journal ArticleDOI
Visible to Infrared Luminescence from a 28-Atom Gold Cluster
Stephan Link,Andrew Beeby,Simon FitzGerald,Mostafa A. El-Sayed,T. Gregory Schaaff,Robert L. Whetten +5 more
TL;DR: In this article, the luminescence properties of chemically prepared gold nanoclusters, each composed of a 28-atom core and a glutathione (GSH) adsorbate layer consisting of 16 molecules, were investigated.
Journal ArticleDOI
Forging Colloidal Nanostructures via Cation Exchange Reactions
Luca De Trizio,Liberato Manna +1 more
TL;DR: This review provides an up to date overview of the complex colloidal nanostructures that could be prepared so far by cation exchange and gives an account of the fundamental thermodynamic and kinetic parameters governing these types of reactions as they are currently understood.
Journal ArticleDOI
Horseradish peroxidase functionalized fluorescent gold nanoclusters for hydrogen peroxide sensing.
TL;DR: A new strategy to construct enzyme functionalized fluorescent gold nanoclusters via a biomineralization process for the detection of hydrogen peroxide is reported, indicating that HRP enzyme remains active and enables catalytic reaction of HRP-Au NCs and H(2)O(2).
Journal ArticleDOI
Total Structure and Electronic Properties of the Gold Nanocrystal Au36(SR)24
Chenjie Zeng,Huifeng Qian,Tao Li,Gao Li,Nathaniel L. Rosi,Bokwon Yoon,Robert N. Barnett,Robert L. Whetten,Uzi Landman,Rongchao Jin +9 more
TL;DR: A golden opportunity: the total structure of a Au(36)(SR)(24) nanocluster reveals an unexpected face-centered-cubic tetrahedral Au(28) kernel.
Journal ArticleDOI
Metal–Organic Framework Nanoparticles
Shunzhi Wang,C. Michael McGuirk,C. Michael McGuirk,Andrea I. d’Aquino,Jarad A. Mason,Chad A. Mirkin +5 more
TL;DR: Recent developments in the synthesis and postsynthetic surface functionalization of MOF NPs that strengthen the fundamental understanding of how such structures form and grow are highlighted; the internal structure and external surface properties of these novel nanomaterials are highlighted.