Optical Phenomena in Molecule-Based Magnetic Materials

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(9), P. 5930 - 6050

Published: April 30, 2024

Since the last century, we have witnessed development of molecular magnetism which deals with magnetic materials based on species, i.e., organic radicals and metal complexes. Among them, broadest attention was devoted to molecule-based ferro-/ferrimagnets, spin transition materials, including those exploring electron transfer, nanomagnets, such as single-molecule magnets (SMMs), qubits, stimuli-responsive materials. Their physical properties open application horizons in sensors, data storage, spintronics, quantum computation. It found that various optical phenomena, thermochromism, photoswitching characteristics, luminescence, nonlinear chiroptical effects, well responsivity external stimuli, can be implemented into Moreover, fruitful interactions these effects provide new cross-effects multifunctionality, enriching applications optical, electronic, devices. This Review aims show scope phenomena generated recent advances areas high-temperature photomagnetism, thermometry utilizing SMMs, addressability magneto-chiral dichroism, opto-magneto-electric multifunctionality. These findings are discussed context types accessible for classes

Language: Английский

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Multifunctionality of luminescent molecular nanomagnets based on lanthanide complexes

Chemical Communications, Journal Year: 2023, Volume and Issue: 59(40), P. 5961 - 5986

Published: Jan. 1, 2023

Multifunctional materials, which exhibit diverse physical properties, are candidates for the new generation of smart devices that realize many tasks simultaneously. Particular attention is given to single-phase multifunctional materials offer effects induced by coupling between introduced properties. Complexes lanthanide(3+) ions an attractive source multifunctionality since they combine luminescent functionalities related their f-f or d-f electronic transitions with magnetic anisotropy originates from spin-orbit and crystal-field effects. The resulting single-molecule magnets (SMMs) link area functional luminophores, applicable in light-emitting diodes sensing, field molecular magnets, high-density data storage, additional advantages, e.g., fruitful magneto-optical correlations switching emission a field. It was recently shown lanthanide SMMs can provide richly expanded towards sensitivity solvent exchange, temperature, light, as well electrical such super-ionic conductivity ferroelectricity, non-centrosymmetricity- chirality-related effects, second-harmonic circularly polarized luminescence. Here, we discuss pioneering reports on use SMMs, emphasis our contribution relying functionalization 4f metal complexes through insertion into heterometallic coordination compounds.

Language: Английский

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Highly Stable MOF‐Type Lead Halide Luminescent Ferroelectrics

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(29)

Published: May 15, 2024

Abstract Lead halide molecular ferroelectrics represent an important class of luminescent ferroelectrics, distinguished by their high chemical and structural tunability, excellent processability distinctive characteristics. However, inherent instability, prone to decomposition upon exposure moisture light, hinders broader ferroelectric applications. Herein, for the first time, we present a series isoreticular metal–organic framework (MOF)‐type lead demonstrating exceptional robustness under ambient conditions at least 15 months even when subjected aqueous boiling conditions. Unlike conventional metal‐oxo secondary building units (SBUs) in MOFs adopting highly centrosymmetric structure with limited distortion, our halide‐based occupy structurally deformable [Pb 2 X] + (X=Cl − /Br /I ) SBUs that facilitate c ‐axis‐biased displacement Pb 2+ centers substantially contribute thermoinducible transformation. Importantly, this MOF‐type undergo ferroelectric‐to‐paraelectric phase transitions remarkably Curie temperature up 505 K, superior most ferroelectrics. Moreover, covalent bonding between phosphorescent organic component light‐harvesting inorganic achieves efficient spin‐orbit coupling intersystem crossing, resulting long‐lived afterglow emission. The compelling combination stability, ferroelectricity emission exhibited opens many potential opportunities energy‐conversion

Language: Английский

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Impacts of β-Diketonate Terminal Ligands on Slow Magnetic Relaxation and Luminescence Thermometry in Dinuclear DyIII Single-Molecule Magnets Leveraging Subtle Local Coordination Modifications to Refine the Slow Relaxation of Magnetization and Enhance Luminescence Thermometry in Dinuclear DyIII Single-Molecule Magnets

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Influence of coordination environment and electronic structure on slow magnetic relaxation luminescent thermometry dinuclear Dy III SMMs with optical properties.

Language: Английский

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Simultaneous Photo‐Induced Magnetic and Dielectric Switching in an Iron(II)‐Based Spin‐Crossover Hofmann‐Type Metal‐Organic Framework

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(45)

Published: Sept. 14, 2022

Molecular materials possessing photo-tunable polarization switching is promising for optical switches, smart sensors, and data storage devices. However, it challenging to devise a molecular material featuring simultaneous switchable magnetic dielectric properties with regard non-invasive convenient light stimulus. Herein, we report new Hofmann-type metal-organic framework (MOF) {Fe(bpt)[Pt(CN)4 ]} ⋅ 0.5anth (1, bpt=2,5-bis(4-pyridyl)thiophen; anth=anthracene), which displays thermo- photo-switchable properties. Photo-monitored structural analyses revealed that was the photo-induced deformation of FeII coordination sphere relative movement guest anthracene resulted in variation local electric dipoles. These findings provide strategy realize through light-induced spin crossover, would be fundamental significance future multifunctional materials.

Language: Английский

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Diverse physical functionalities of rare-earth hexacyanidometallate frameworks and their molecular analogues

Inorganic Chemistry Frontiers, Journal Year: 2020, Volume and Issue: 8(2), P. 452 - 483

Published: Oct. 29, 2020

The combination of rare-earth metal complexes and hexacyanidometallates transition metals is a fruitful pathway for achieving functional materials exhibiting wide scope mechanical, magnetic, optical, electrochemical properties.

Language: Английский

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Photochromism and photomagnetism in three cyano-bridged 3d–4f heterobimetallic viologen frameworks

Dalton Transactions, Journal Year: 2021, Volume and Issue: 50(14), P. 4959 - 4966

Published: Jan. 1, 2021

Three 3-D isostructural cyanide-bridged 3d–4f heterobimetallic complexes with enhanced photochromism and photomagnetism at RT have been achieved by the introduction of a photoactive viologen functionalized ligand.

Language: Английский

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Cyanometallate framework templated synthesis of hierarchically porous La(OH)3 for High-Efficient and stable phosphorus removal from tailwater

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 465, P. 142789 - 142789

Published: April 4, 2023

Language: Английский

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Large breathing effect induced by water sorption in a remarkably stable nonporous cyanide-bridged coordination polymer

Chemical Science, Journal Year: 2021, Volume and Issue: 12(26), P. 9176 - 9188

Published: Jan. 1, 2021

While metal-organic frameworks (MOFs) are at the forefront of cutting-edge porous materials, extraordinary sorption properties can also be observed in Prussian Blue Analogs (PBAs) and related materials comprising extremely short bridging ligands. Herein, we present a bimetallic nonporous cyanide-bridged coordination polymer (CP) {[Mn(imH)]2[Mo(CN)8]} n (1Mn; imH = imidazole) that efficiently reversibly capture release water molecules over tens cycles without any fatigue despite being based on one shortest ligands known - cyanide. The performance matches or even outperforms MOFs typically selected for harvesting applications with perfect reversibility very low desorption temperatures. Water 1Mn is possible due to breathing effect (accompanied by dramatic cyanide-framework transformation) occurring three well-defined steps between four different crystal phases studied structurally X-ray diffraction structural analysis. Moreover, H2O switches EPR signal intensity MnII centres, which has been demonstrated situ measurements enables monitoring hydration level EPR. controls its photomagnetic behavior cryogenic regime, thanks presence [MoIV(CN)8]4- chromophore structure. These observations demonstrate potential CPs possibility merge it unique physical this class compounds arising from their character (e.g. photomagnetism long-range magnetic ordering).

Language: Английский

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Cyanide-bridged assemblies with tricyanometalates

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 472, P. 214763 - 214763

Published: Sept. 1, 2022

Language: Английский

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