Chiral-induced spin selectivity in electrocatalysis

Matter, Journal Year: 2025, Volume and Issue: 8(2), P. 101924 - 101924

Published: Feb. 1, 2025

Language: Английский

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Engineering Helical Chirality in Metal-Coordinated Cyclodextrin Nanochannels

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: 147(9), P. 7325 - 7335

Published: Feb. 18, 2025

Helicates are a defining element of DNAs and proteins, with functions that critical to variety biological processes. Cyclodextrins promising candidates for forging multiple-stranded helicates well-defined helicity, but lack available tools has precluded the construction artificial helical nanochannels controllable geometry helicity from these widely chiral building blocks. Herein, we disclose family Ag6L2 can be readily assembled α-cyclodextrin-derived ligands through coordination between pyridinyl groups Ag+ cations. We discovered exhibit either an M or P when cations adopt tetrahedral while losing most their linearly coordinated. Both precisely controlled by simply changing number methyl at ortho positions ligands. The tetracoordinated interconnect into infinite two-dimensional coordinative network characterized hexagonal tessellation. Theoretical calculations, which reveal lower energies conformations observed in crystals compared those inverted counterparts, support experimental results.

Language: Английский

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Carborane Meets Metal Nanocluster: New Opportunities in Nanomaterials

Accounts of Chemical Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

ConspectusMetal nanoclusters, distinguished by their atom-precise structures and quantum size effect, are regarded as a crucial bridge between organometallic complexes plasmonic metal nanoparticles. These nanoclusters primarily composed of metallic core enveloped protective ligands, wherein the ligands play vital role in determining nanoclusters' synthesis, structural integrity, physicochemical properties. Considerable efforts ligand engineering have concentrated on exploring novel coordinating functional groups to advance nanocluster research, particularly precise controlled synthesis superatomic fine-tuning intrinsic properties, subsequent assembly application. However, backbone these seems equally important but attracts less attention. It is reasonable that if utility two moieties (coordinating group backbone) provokes profound synergistic contributions properties resultant extremely inestimable. In this context, carborane, with its spherical shape three-dimensional aromaticity (electronic effect), has emerged promising candidate for design. Over past decades, incorporation carborane into enabled construction various exhibiting distinct architectures, enhanced stability, unique reactivity. Therefore, it present current status challenges associated carboranyl ligand-protected guide future development. This Account provides comprehensive summary recent advances ligand-stabilized primary focus from our laboratory. We begin discussing advantages introducing carborane-based preparation, particular emphasis virtues heterometal-doped isostructural nanoclusters. Subsequently, we summarize strategies modification hierarchical elucidating how facilitates modulation specific promotes supramolecular covalent assembly. Furthermore, discuss cooperativity achieved framework broaden scope applications versatile fields, including hypergolic fuels, previously unexplored area. Finally, facing research nido-carborane or metallocarborane, fundamental understanding structure–property relationships, potential such boron neutron capture therapy radionuclide extraction. aims stimulate interest attributes corresponding among students researchers across diverse disciplines, chemistry, crystal engineering, materials science.

Language: Английский

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Pd(II)-catalyzed B(9)-alkynylation of o/m-carboranes

Organic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(23), P. 6706 - 6711

Published: Jan. 1, 2024

Pd( ii )-catalyzed selective B(9)-alkynylation of o -carboranes and m with i Pr 3 SiCCBr as the alkynylated reagent was developed. Further transformation products provided diverse carborane derivatives.

Language: Английский

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Hierarchical assembly of Ag40 nanowheel ranging from building blocks to diverse superstructure regulation

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Oct. 23, 2024

Achieving precise and controllable hierarchical self-assembly of functional nanoclusters within crystal lattices to create distinct architectures is immense significance, yet it creates considerable challenges. Here we successfully synthesized a silver nanowheel Ag

Language: Английский

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Stimuli-Responsive Photoluminescent Molecular Tweezers for Highly Enantioselective Discrimination of Chiral Primary Amines

Analytical Chemistry, Journal Year: 2024, Volume and Issue: 96(49), P. 19632 - 19640

Published: Nov. 27, 2024

To address the challenge of chiral recognition in terms efficiency and generality, we propose a novel fluorescence sensing approach by rationally designing metal-ion-responsive molecular tweezers. The flexible adaptable tweezers enable facile 31 structurally varied primary amine compounds, including amino acids, acid esters, amines. Notably, upon stimulation zinc ions, demonstrate higher enantioselective response. Combined density functional theory calculations reveal that mechanism relies on differential reaction rates potential hydrogen-bonding interactions between two enantiomers receptor, which results one forming more abundant, stable, rigid complex with resulting significant increase intensity enantioselectivity. stimuli-responsive provides strategy for precise stereocontrol universality recognition, offering promising tool applications various fields.

Language: Английский

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Heteroatom number-dependent cluster frameworks in structurally comparable Pd–Au nanoclusters

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This work achieved the manipulation of Pd dopant numbers in cluster framework based on two structurally comparable x Au 12 ( = 1, 2) nanoclusters.

Language: Английский

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Carborane in Polymers—Existent Stipulations and Technological Trademarks

Polymer-Plastics Technology and Materials, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 27

Published: Feb. 10, 2025

Language: Английский

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Engineering Chiral Confinement Environment in Polyoxometalate Intercalated Graphene Oxide Sensor for Electrochemical Enantioselective Recognition

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

The electrochemistry recognition of enantiomeric chiral molecules holds great significance for the pharmaceutical industry and scientific research. However, enhancing sensitivity selectivity simultaneously, elucidating mechanism, are two primary challenges. Here, an electrochemical sensor L-C4-PMoV/GO is developed by confining imidazole cations (L-C4) [PMo10V2]5- (PMoV) signal anions within interlayer graphene oxide (GO). highly sensitive to towards drug Levodopa (L-DOPA), which exhibits 16 times higher than L-C4/GO. In addition, enantioselectivity ΔS = 19.92 achieved. Mechanism studies suggest that confinement effect plays a crucial role in synergism between site PMoV L-C4. chiral-confined microenvironment, induction from L-C4 facilitated, results distortion Mo (V)─O bonds. hydrogen-bonding networks among L-C4, (V)─O, DOPA generate adsorption energy difference L/D-DOPA, as revealed situ Raman spectroscopy theoretical calculation. Compared conventional techniques, shows comparable enantiomer excess (ee) value determination, low limits detection (LOD) (6.7 nm L-DOPA, 50.6 D-DOPA), portability, enabling practical recognition.

Language: Английский

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Chiral Amplification and Regulation: Design and Applications of Circularly Polarized Luminescence‐Active Materials Derived From Macrocyclic Compounds

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: May 9, 2025

ABSTRACT Chirality is a fundamental property in molecules and biological systems, characterized by asymmetric configurational features. Circularly polarized luminescence (CPL) materials have gained significant attention due to their unique optical activities, with applications 3D displays, chiral sensors, catalysis, more. Chiral transfer amplification typically involve the generation of chirality excited state, facilitated interactions like energy transfer, electron or induction. Supramolecular self‐assembly strategies, particularly macrocyclic compounds, enable linking achiral luminescent units through intermolecular interactions. Macrocyclic hosts—cyclodextrins, calix[ n ]arenes, pillar[ cyclophanes, cucurbit[ ]urils—are especially promising stable structures adjustable cavities for guest encapsulation. These compounds induce photophysical properties host–guest complexation, making them ideal constructing amplification, CPL‐active materials. This review summarizes advancements multicolor CPL materials, sensing, induction, separation, highlighting potential supramolecular material design. The challenges future directions this field are also discussed, aiming guide further research application systems.

Language: Английский

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