Lantern‐Like Diplatinum(III)‐Catalyzed Redox‐Free Borylation or Silylation of Alkynes

Chinese Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Comprehensive Summary Binuclear platinum(III) complexes were known for their high index of antitumor activity and a lower associated nephrotoxicity. However, the chemistry reactivity binuclear compounds have not yet been explored to same extent as those platinum(II) platinum(IV) species. Here, we reported first platinum‐catalyzed hydrosilylation, monoborylation diboration reaction alkynes with excellent selectivity yield. Moreover, mechanistic investigation by control experiments, kinetic isotope effect (KIE) study, Hammett plots, NMR spectra, UV−vis X‐ray photoelectron spectroscopy (XPS) analysis reveal that Pt(III) 2 ‐catalyzed reactions pass through σ‐bond metathesis process rather than two‐electron redox processes mononuclear platinum catalysis. there are two different rate‐determining steps, in which migratory insertion step dominates rate electron deficient substates rich counterparts, respectively.

Language: Английский

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Lighting up metal nanoclusters by the H2O-dictated electron relaxation dynamics

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 7, 2025

Abstract The modulation of traps has found attractive attention to optimize the performance luminescent materials, while understanding trap-involved photoluminescence management metal nanoclusters greatly lags behind, thus extensively impeding their increasing acceptance as promising chromophores. Here, we report an efficient passivation structural oxygen vacancies in AuAg by leveraging H 2 O molecules, achieving a sensitive color tuning from 536 480 nm and remarkably boosting quantum yield 5.3% (trap-state emission) 91.6% (native-state emission). In detail, favored electron transfer relevant contributes weak trap-state emission, which is capable being restrained molecules taking Au-O Ag-O bonds. This scenario allows dominated native-state emission with faster radiative rate. parallel, can rigidify landscape on hydrogen bonding, enabling suppression electron-optical phonon coupling decelerated non-radiative presented study deepens tailoring properties manipulating surface trap chemistry relaxation dynamics, would shed new light customizable performance.

Language: Английский

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Employing Copper-Based Nanomaterials to Combat Multi-Drug-Resistant Bacteria

Microorganisms, Journal Year: 2025, Volume and Issue: 13(4), P. 708 - 708

Published: March 21, 2025

The rise of multi-drug-resistant (MDR) bacteria poses a severe global threat to public health, necessitating the development innovative therapeutic strategies overcome these challenges. Copper-based nanomaterials have emerged as promising agents due their intrinsic antibacterial properties, cost-effectiveness, and adaptability for multifunctional approaches. These materials exhibit exceptional potential in advanced therapies, including chemodynamic therapy (CDT), photothermal (PTT), photodynamic (PDT). Their unique physicochemical such controlled ion release, reactive oxygen species (ROS) generation, tunable catalytic activity, enable them target MDR effectively while minimizing off-target effects. This paper systematically reviews mechanisms through which Cu-based enhance efficiency emphasizes specific performance field. Key factors influencing properties—such electronic interactions, characteristics, size effects, ligand single-atom doping, geometric configurations—are analyzed depth. By uncovering copper-based nanomaterials, this work aims inspire approaches that improve patient outcomes, reduce burden bacterial infections, health initiatives.

Language: Английский

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Electrochemical synthesis of allenyl silanes and allenyl boronic esters

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 17, 2025

Allenyl silanes and boronates are pivotal building blocks in organic synthesis. Nevertheless, their synthesis requires the manipulation of transition metal or highly reactive species. Hence, development more sustainable protocol is sought after. Here we show electrochemical allenyl boronic esters. This catalyst-free method proceeds under mild reaction conditions. The for shows an excellent efficiency a good functional group tolerance. isolated yields (28 examples, 45-95% yields) without use catalyst A similar developed boronates, which obtained low to moderate (13 5-55% yields). Finally, mechanism based on oxidative generation silyl boryl radicals suggested access these classes allenes.

Language: Английский

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