Control of light, spin and charge with chiral metal halide semiconductors

Nature Reviews Chemistry, Journal Year: 2022, Volume and Issue: 6(7), P. 470 - 485

Published: June 27, 2022

Language: Английский

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Organic materials‐based cathode for zinc ion battery

SmartMat, Journal Year: 2022, Volume and Issue: 3(4), P. 565 - 581

Published: April 26, 2022

Abstract The quest for advanced energy storage devices with cheaper, safer, more resource‐abundant has triggered intense research into zinc ion batteries (ZIBs). Among them, organic materials as cathode ZIBs have attracted great interest due to their flexible structure designability, high theoretical capacity, environmental friendliness, and sustainability. Although numerous electrode been studied different redox mechanisms proposed in the past decade, electrochemical performance still needs further improvement, require exploration. This paper provides a systematical overview of three types (bipolar‐type conductive polymer, n‐type conjugated carbonyl compounds, p‐type material) on distinct characteristics. We then focus discussing design strategies improve performance. Furthermore, challenges future directions are discussed provide foundation developing organic‐based ZIBs.

Language: Английский

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Chiral Seeded Growth of Gold Nanorods Into Fourfold Twisted Nanoparticles with Plasmonic Optical Activity

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(1)

Published: Oct. 14, 2022

A robust and reproducible methodology to prepare stable inorganic nanoparticles with chiral morphology may hold the key practical utilization of these materials. An optimized growth method fourfold twisted gold nanorods is described herein, where amino acid cysteine used as a dissymmetry inducer. Four tilted ridges are found develop on surface single-crystal upon repeated reduction HAuCl

Language: Английский

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Chiral Hybrid Copper(I) Halides for High Efficiency Second Harmonic Generation with a Broadband Transparency Window

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(10)

Published: Jan. 10, 2022

Chiral hybrid organic-inorganic metal halides (HOMHs) with intrinsic noncentrosymmetry have shown great promise for applications in second-order nonlinear optics (NLO). However, established chiral HOMHs often suffer from their relatively small band gaps, which lead to negative impacts on transparent window and laser-induced damage thresholds (LDT). Here, we synthesized two based CuI halides, namely (R-/S-MBA)CuBr2 , feature well-balanced NLO performances a highly efficient SHG response, outstanding optical transparency, high LDT. The effective coefficient of (R-MBA)CuBr2 has been determined be ≈24.7 pm V-1 is orders magnitude higher than that CuII counterparts. This work shows the promising potential -based photonic wide wavelength regions.

Language: Английский

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Photothermal catalysis for CO2 conversion

Chinese Chemical Letters, Journal Year: 2022, Volume and Issue: 34(2), P. 107420 - 107420

Published: April 14, 2022

Language: Английский

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Synthesis of Highly Luminescent Chiral Nanographene

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(4)

Published: Nov. 26, 2022

Chiral nanographenes with both high fluorescence quantum yields (ΦF ) and large dissymmetry factors (glum are essential to the development of circularly polarized luminescence (CPL) materials. However, most studies have been focused on improvement glum , whereas how design highly emissive chiral is still unclear. In this work, we propose a new strategy achieve ΦF by helical π-extension strongly luminescent chromophores while maintaining frontier molecular orbital (FMO) distribution pattern. nanographene perylene as core two dibenzo[6]helicene fragments wings has synthesized, which exhibits record 93 % among reported excellent CPL brightness (BCPL 32 M-1 cm-1 .

Language: Английский

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Insight on Chirality Encoding from Small Thiolated Molecule to Plasmonic Au@Ag and Au@Au Nanoparticles

ACS Nano, Journal Year: 2022, Volume and Issue: 16(1), P. 1089 - 1101

Published: Jan. 7, 2022

Chiral plasmonic nanomaterials exhibiting intense optical activity are promising for numerous applications. In order to prepare those nanostructures, one strategy is grow metallic nanoparticles in the presence of chiral molecules. However, such approach origin observed chirality remains uncertain. this work, we expand range available nanostructures and propose another vision colloidal systems. For that purpose, investigated synthesis two core-shell Au@Ag Au@Au systems built from gold nanobipyramid cores, cysteine. The obtained possess uniform shape size show circular dichroism visible range, were characterized by electron microscopy, dichroism, UV-vis-NIR spectroscopy. Opto-chiral responses found be highly dependent on morphology plasmon resonance. It revealed (i) importance anisotropy (ii) role multipolar modes way achieve dichroism. cysteine as shaping agent encoder was particularly evaluated. Our experimental results, supported theoretical simulations, contrast hypothesis molecules entrapped determine properties, highlighting key outmost part shell Along with these impact enantiomeric ratio final suggested a or patterns should considered.

Language: Английский

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Fine-tune chiroptical activity in discrete chiral Au nanorods

Nano Research, Journal Year: 2022, Volume and Issue: 15(7), P. 6574 - 6581

Published: March 31, 2022

Language: Английский

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Bottom–Up Design of Photoactive Chiral Covalent Organic Frameworks for Visible-Light-Driven Asymmetric Catalysis

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(32), P. 18015 - 18021

Published: Aug. 8, 2023

The development of chiral covalentorganic framework catalysts (CCOFs) to synthesize enantiopure organic compounds is crucial and highly desirable in synthetic chemistry. Photocatalytic asymmetric reactions based on CCOFs are eco-friendly sustainable while they still elaborate. In this work, we report a general bottom-up strategy successfully several photoactive CCOFX (X = 1-5 1-Boc). porphyrin building blocks selected as knots various secondary-amine-based catalytic centers immobilized the pore walls through rational design benzoimidazole linkers. units act light-harvesting antennae generate photo-induced charge carriers for activation bromide during photocatalytic alkylation aldehydes. Meanwhile, aldehydes activated by secondary amine form target products with high yield (up 97%) ee value 93%). results significantly expand scope predesign CCOF photocatalysts visible-light-driven catalysis.

Language: Английский

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Polarization-directed growth of spiral nanostructures by laser direct writing with vector beams

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: March 14, 2023

Abstract Chirality is pivotal in nature which attracts wide research interests from all disciplines and creating chiral matter one of the central themes for chemists material scientists. Despite significant efforts, a simple, cost-effective general method that can produce different kinds metamaterials with high regularity tailorability still demanding but greatly missing. Here, we introduce polarization-directed growth spiral nanostructures via vector beams, tailorable generally applicable to both plasmonic dielectric materials. The self-aligned near field enhances photochemical along polarization, crucial oriented growth. obtained present prominent optical activity g-factor up 0.4, be tuned by adjusting spirality beams. These used sensing enantiomers. metasurfaces also formed arrays sub-mm scale, exhibit over 0.1. However, photoluminescence cadmium sulfide presents very weak luminescence excitation linearly polarized light. A number applications envisioned these such as sensing, separation information storage.

Language: Английский

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