Advancements in Atomically Precise Nanocluster Protected by Thiacalix[4]arene

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Abstract Coinage metal nanoclusters (NCs), comprising a few to several hundred atoms, are prized for their size‐dependent properties crucial in catalysis, sensing, and biomedicine. However, practical application is often hindered by stability reactivity challenges. Thiacalixarene, macrocyclic ligand, shows promise stabilizing silver, copper, bimetallic NCs, enhancing structural integrity chemical stability. This investigation delves into the unique of thiacalix[4]arene role bolstering NC stability, catalytic efficiency, sensing capabilities. The current challenges future prospects critically evaluated, underscoring transformative impact nanoscience. review aims broaden utilization atomically precise coinage unlocking new avenues across scientific industrial applications.

Language: Английский

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Engineering Cu nanoclusters with aggregation-induced emission for photodynamic healing of wound with drug-resistant bacteria-infection

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152216 - 152216

Published: May 13, 2024

Language: Английский

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[Au₉Ag₆(CCR)₁₀(DPPM)₂Cl₂](PPh₄): a four-electron cluster with a bi-decahedral twisted metal core

Nanoscale, Journal Year: 2024, Volume and Issue: 16(23), P. 11090 - 11095

Published: Jan. 1, 2024

We report a Au9Ag6 cluster characterized by distinctive bi-decahedral core, formed through two decahedra sharing one vertex. This marks the first occurrence of clusters constructed from decahedral units.

Language: Английский

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Temperature-Induced Assembly of Thiacalix[4]arene-Protected Bowl-Shaped High-Nuclearity 3d–4f Clusters

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Thiacalix[4]arenes are a class of macrocyclic ligands employed to assemble high-nuclear-weight clusters, yet deciphering their structure and assembly process at the atomic level continues pose formidable challenge. Here, we report four bowl-shaped high-nuclearity 3d–4f {GdNi12[TC4A]3[CO3]3[HCOO]6[OCH3]3}·20H2O ({GdNi12}), {Gd2Ni28[TC4A]6[CO3]8[HCOO]10[OCH3]4[μ3–OH]6[μ2–OH]2}·17H2O ({Gd2Ni28}), {Gd4Ni24[TC4A]6[CO3]6[HCOO]16[OCH3]8[μ3–OH]6}·10H2O ({Gd4Ni24}), {Gd5Ni26[TC4A]6[MA]2[CO3]6[HCOO]6[OCH3]4[μ3–OH]10}·5H2O ({Gd5Ni26}) (H2MA = malicacid), protected by p-tert-butylthiacalix[4]arene (H4TC4A) ligand. The {GdNi12} cluster has architecture composed [NiO6], [GdO10], [CO3] groups. Meanwhile, {Gd2Ni28}, {Gd4Ni24}, {Gd5Ni26} present mouth-to-mouth skew-symmetric structure, each units. Magnetic studies revealed ferromagnetic interactions within {Gd2Ni28} clusters. This work not only reveals effect on formation clusters but also provides new structural prototype understand rules.

Language: Английский

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Carboxylative cyclization of propargylic amines with CO2 in water catalyzed by acetylglucosyl 2-methyl-imidazolium and palladium nanoparticle modified polyacrylonitrile fiber

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131670 - 131670

Published: Jan. 1, 2025

Language: Английский

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Thermally Activated Delayed Fluorescence-Based Near-Infrared-II Luminescence and Controlled Size Growth of Silver Nanoclusters

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Due to the significant relationships between structure and properties, controlled construction of atomically precise metal clusters presents both a formidable challenge great importance. The innovative synthesis well-defined silver nanoclusters with near-infrared II (NIR-II) luminescent properties may inspire further exploration functional for bioimaging applications. In this study, we employed multidentate chelating nitrogen ligand 3,5-di(2-pyridyl)pyrazole (Hbpypz) construct three unprecedented nanoclusters: [Ag27(bpypz)14]3+ (Ag27), [Ag62(bpypz)18]6+ (Ag62), [Ag91(bpypz)24]5+ (Ag91). Single-crystal X-ray analysis indicated that these cluster structures stem from Ag13 units, exhibiting cluster-of-cluster configurations. By modulating stoichiometry centers, achieved size growth reversible cluster-to-cluster conversions among nanoclusters. Notably, Ag27 nanocluster exhibits an interesting thermally activated delayed fluorescence (TADF) based luminescence in second region demonstrates high catalytic efficiency oxidative coupling benzylamines via singlet oxygen (1O2) oxidation mechanism.

Language: Английский

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Toward the Customized Performance on a Supported Au₄Ru₂ Cluster Catalyst

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract Precisely constructing the catalyst structure and composition at atomic level is highly desirable for unexpected properties, but extremely challenging. The success in atomically precise nanochemistry provides an opportunity active site‐tailoring of catalysts toward unique catalysis. Here, monodisperse Au 4 Ru 2 (PPh 3 ) (SC H Ph) 8 clusters are reported that anchored into aerogel as heterogeneous carbonylation process CO hydrogenation coupled with dimethylamine. indeed a performance stage cluster, on which sites cluster act centers to participate synergistic activation reaction , thereby promoting formylation N,N ‐dimethylformamide (DMF), while play decisive role sequent DMF trimethylamine. Notably, can not only exhibit high turnover number performed batch reactor, also show long‐term utilization flowing fixed‐bed system, have been documented previous catalysts.

Language: Английский

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Metal Cluster Catalysts for Electrochemical CO₂ Reduction

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 5731 - 5759

Published: March 24, 2025

Language: Английский

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Tailored Engineering of Primary Catalytic Sites and Secondary Coordination Spheres in Metalloenzyme-Mimetic MOF Catalysts for Boosting Efficient CO₂ Conversion

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The fabrication of metalloenzyme-mimetic artificial catalyst is a promising approach to achieve maximum catalytic efficiency, but the rational integration sophisticatedly optimized primary sites (PCS) and secondary coordination spheres (SCS) for specific transformation poses grand challenge. Here in this work, we report tailored engineering Cu PCS perfluoroalkyl SCS onto zirconium-based framework [UiO-67-(BPY-Cu)-F x (x = 3, 5, 7, 11)] [BPY 2,2'-bipyridine-5,5'-dicarboxylate] that can be utilized highly efficient carboxylic cyclization reaction between propargylamines flue gas CO2. groups act as tunable facilely adjust surface electronegativity, hydrophobicity, well CO2 affinity water vapor-resistance by simply varying chain length. Meanwhile, synergy significantly facilitated step stabilizing critical transition state, leading fast oxazolidinone ring. Owing these features, UiO-67-(BPY-Cu)-F7 exhibited remarkable behavior greatly facilitating binding CO2, promoting stabilization state cyclization, boosting releasing oxazolidinones, which have been systematically investigated combination substrate adsorption tests, situ Fourier transform infrared spectra, canonical Monte Carlo simulations, density functional theory calculations, etc. Consequently, showed outstanding performance under ambient conditions, exhibiting 64 times higher turnover frequency (TOF) than homogeneous or other MOF catalysts, highest TOF similar conditions. present work not only provides an alternative strategy construction advanced systems, also paves new direction development conversion with exceptional activity through catalysts.

Language: Английский

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Copper(I) Cluster of Aggregation-Induced Emission and X-Ray Scintillator Characteristic

Chemical Research in Chinese Universities, Journal Year: 2024, Volume and Issue: 40(5), P. 887 - 893

Published: July 17, 2024

Language: Английский

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