A homochiral hexagadolinium phosphonate cluster: structure, chiral electrochemical recognition and a large magnetocaloric effect DOI

Qing‐Qing Qian,

Jian Huang,

Jia‐Ge Jia

et al.

European Journal of Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 27(23)

Published: July 30, 2024

Abstract Chiral lanthanide clusters have promising applications in chiral recognition, magneto‐optical memories, and spintronic devices. Nonetheless, the precise prediction controlled development of homochiral polynuclear Ln‐complexes is still a challenge. Herein, through multidentate chelate synthetic strategy, new hexagadolinium phosphonate cluster designated as R/S ‐[Gd 6 (pmhpH) 8 (NO 3 ) 2 (H O) ]⋅19H O ( ‐1 was successfully obtained by reacting phosphonomethylhomoproline(pmhpH with Gd(III) salt. The cluster, shaped like lantern, constructed from {GdO } polyhedra {PO C} tetrahedra surrounded eight pmhpH 2− ligands. Within structure, two types gadolinium ions different coordination modes are observed. Each ion bound to carboxylate oxygens six coordinated Circular dichroism spectra comfirmed that R / S exists pair enantiomers. Moreover, exhibits high thermal stability, decomposing at temperatures exceeding 335 °C. Notably, materials can be used for enantiomeric recognition tryptophan (Trp) differential pulse voltammetry (DPV) peak current ratio (I D /I L 2.74. Besides, magnetic measurements revealed compound good magnetocaloric effect (MCE) maximum entropy change −ΔSm max =36.84 Jkg −1 K T =2 Δ H =7 T.

Language: Английский

Chiral Induced Spin Selectivity DOI Creative Commons
Brian P. Bloom, Yossi Paltiel, Ron Naaman

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(4), P. 1950 - 1991

Published: Feb. 16, 2024

Since the initial landmark study on chiral induced spin selectivity (CISS) effect in 1999, considerable experimental and theoretical efforts have been made to understand physical underpinnings mechanistic features of this interesting phenomenon. As first formulated, CISS refers innate ability materials act as filters for electron transport; however, more recent experiments demonstrate that displacement currents arising from charge polarization molecules lead without need net flow. With its identification a fundamental connection between symmetry materials, promises profound ubiquitous implications existing technologies new approaches answering age old questions, such homochiral nature life. This review begins with discussion different methods measuring then provides comprehensive overview known exhibit CISS-based phenomena before proceeding identify structure-property relations delineate leading models effect. Next, it identifies some physics, chemistry, biology. The ends critical assessment field comments future outlook.

Language: Английский

Citations

121
Expanding the Horizons of Machine Learning in Nanomaterials to Chiral Nanostructures DOI Creative Commons
Vera Kuznetsova, Áine Coogan,

Dmitry Botov

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(18)

Published: Jan. 19, 2024

Abstract Machine learning holds significant research potential in the field of nanotechnology, enabling nanomaterial structure and property predictions, facilitating materials design discovery, reducing need for time‐consuming labor‐intensive experiments simulations. In contrast to their achiral counterparts, application machine chiral nanomaterials is still its infancy, with a limited number publications date. This despite great advance development new sustainable high values optical activity, circularly polarized luminescence, enantioselectivity, as well analysis structural chirality by electron microscopy. this review, an methods used studying provided, subsequently offering guidance on adapting extending work nanomaterials. An overview within framework synthesis–structure–property–application relationships presented insights how leverage study these highly complex are provided. Some key recent reviewed discussed Finally, review captures achievements, ongoing challenges, prospective outlook very important field.

Language: Английский

Citations

24
Evaluation of antimicrobial, antioxidant, and anti-inflammatory abilities of sustainably synthesized Co3O4 NPs DOI
Mohamad S. AlSalhi, Goldie Oza, Irais Castillo‐Maldonado

et al.

Biocatalysis and Agricultural Biotechnology, Journal Year: 2024, Volume and Issue: 56, P. 103025 - 103025

Published: Jan. 29, 2024

Language: Английский

Citations

12
High-Throughput Morphological Chirality Quantification of Twisted and Wrinkled Gold Nanorods DOI
E. O. Vlasov, Wouter Heyvaert, Bing Ni

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(18), P. 12010 - 12019

Published: April 26, 2024

Chirality in gold nanostructures offers an exciting opportunity to tune their differential optical response left- and right-handed circularly polarized light, as well interactions with biomolecules living matter. However, tuning understanding such demands quantification of the structural features that are responsible for chiral behavior. Electron tomography (ET) enables characterization at single-particle level has been used quantify helicity complex nanorods. technique is time-consuming consequently lacks statistical value. To address this issue, we introduce herein a high-throughput methodology combines images acquired by secondary electron-based electron beam-induced current (SEEBIC) quantitative image analysis. As result, geometric chirality hundreds nanoparticles can be quantified less than 1 h. When combining drastic gain data collection efficiency SEEBIC limited number ET sets, better how structure individual translates into ensemble chiroptical reached.

Language: Английский

Citations

8
Disentangling the “tip-effects” enhanced antibacterial mechanism of Ag nanoparticles DOI Creative Commons
Shenli Wang, Yanping Zhang,

Xuan Chen

et al.

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(29), P. 12281 - 12290

Published: Jan. 1, 2024

Silver nanoparticles (Ag NPs) exhibit strong antibacterial activity and are widely used in industries such as medical, food cosmetics. In this study, Ag nanospheres nanotriangles selected agents to reveal the distinct mechanism of tip effects towards their performance. A series experiments were implemented, including

Language: Английский

Citations

5
Colorimetric Detection of Glucose Based on Discrete Chiral Au Nanorods DOI Open Access
X. PAN, Haoyu Li, Xun Chen

et al.

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

Published: Feb. 21, 2025

Abstract The fabrication of discrete chiral Au nanorods (c‐Au NRs) used as new emerging plasmonic nanozyme for colorimetric detection glucose is presented. It found that the based on c‐Au NRs dependent geometries and polarized light. In comparison to Lc‐Au NRs, Dc‐Au possess a lower linear concentration range limit (LOD) due their higher affinity capacity. More importantly, light (LP: linearly light; LCP: left‐handed circularly RCP: right‐handed light) can enantioselectively markedly improve LOD hot electrons electromagnetic field. For instance, under RCP irradiation in LCP irradiation. Similarly, than Our work not only provides novel strategy levels, but also reveals interaction between matters chemical substrates, which will be helpful field recognition, catalysis, drugs.

Language: Английский

Citations

0
Anisotropy-Dependent Chirality Transfer from Cellulose Nanocrystals to β-FeOOH Nanowhiskers DOI Creative Commons

Jinyu Tang,

Shouhua Feng, Y. Ming

et al.

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

Published: Jan. 1, 2025

Biomimetic mineralization of iron oxide on cellulose nanocrystals creates chiral nanowhiskers with an anisotropy-dependent g -factor, altering the response helical photonic films to magnetic fields.

Language: Английский

Citations

0
Chiral Inorganic Nanomaterials Characterized by Advanced TEM: A Qualitative and Quantitative Study DOI
Jiaqi Chen, Xuegang Chen,

Ri-ichi Murakami

et al.

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

Published: Oct. 14, 2024

Abstract Chiral inorganic nanomaterials (CINMs) have garnered significant interest due to their exceptional optical, electronic, and catalytic properties, offering promising advancements in energy conversion, data storage, catalysis, biomedicine. While traditional optical spectrophotometers reveal the chiroptical performance of CINMs on an ensemble level, direct structural visualization for qualitative quantitative discernment chiral features has become increasingly distinct with transmission electron microscopy (TEM) techniques. The need reasonable high‐standard discrimination requirements driven progress chirality‐based TEM technologies. Therefore, this review good season takes initiative summarize current technologies characterization, emphasizing a analysis atomic‐level features, 0D, 1D, 2D nanocrystals, assembled nanomaterials. Then, methods determining chirality is also highlighted, such as 3D tomography, further address evolution structures monitored by Ex‐situ In‐situ By providing roadmap challenges proposing future qualitative, quantitative, real‐time CINMs, it can drive innovations field well development

Language: Английский

Citations

2
Intrinsic Design and Modulated Circular Dichroism of Inorganic Nanowire/Hydrogel Composite DOI Open Access
Huu‐Quang Nguyen, My‐Chi Thi Nguyen,

Hyojin Kang

et al.

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 2, 2023

Abstract Controlling the handedness and absorptive characteristics of chiral materials is essential for exploring new advances in field sensors catalysts. The deliberate architecture building blocks their self‐assembly process are critical factors fabricating chirally active structures from achiral nanoscale components. Herein, fabrication multicomponent gel comprising magnetoplasmonic core–shell Au@Fe x O y nanowires embedded a macroscopic titania nanocrystal network demonstrated, which shows broadband absorption covering ultraviolet–visible light spectrum while maintaining excellent porosity aerogel state. effect externally applied helical magnetic exploited to induce into superstructures. Furthermore, second vector symmetry observed when hydrogel unit rotated up 45° around z ‐axis perpendicular path, measured circular dichroism intensity modulated ±102% compared those at 0°. This study serves as concept designing optically 3D superstructures, applicable optical filters, sensing devices, photocatalysts.

Language: Английский

Citations

2
Electron-Withdrawing meso-Substituents Turn On Magneto-Optical Activity in Porphyrins DOI

Emigdio E. Turner,

Trong-Nhan Pham, Samuel Peter Smith

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(8), P. 3630 - 3636

Published: Feb. 15, 2024

A series of square planar metalloporphyrins (M(TPP), TPP is 5,10,15,20-tetraphenylporphyrin and M(TPFPP), TPFPP 5,10,15,20-tetrapentafluorophenylporphyrin; M Zn2+, Ni2+, Pd2+, or Pt2+) with distinct meso-substituents were prepared, their magneto-optical activity (MOA) was characterized by magnetic circular dichroism (MCD) rotary dispersion spectroscopy (MORD; also known as Faraday rotation spectroscopy). MOA crucial in the development next-generation devices quantum computing. The data show that presence meso-pentafluorophenyl substituents results significant increase comparison to homologous phenyl group. Differences these are rationalized using Gouterman four-orbital model pave way for rational design improved tailorable materials.

Language: Английский

Citations

0