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Gui LA, Zhang YF, Peng Y, Hu ZB, Song Y. Synergetic Responses of Multiple Functions Induced by Phase Transition in Molecular Materials. Chemphyschem 2024:e202400297. [PMID: 38797706 DOI: 10.1002/cphc.202400297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 05/11/2024] [Accepted: 05/21/2024] [Indexed: 05/29/2024]
Abstract
Materials that integrate magnetism, electricity and luminescence can not only improve the operational efficiency of devices, but also potentially generate new functions through their coupling. Therefore, multifunctional synergistic effects have broad application prospects in fields such as optoelectronic devices, information storage and processing, and quantum computing. However, in the research field of molecular materials, there are few reports on the synergistic multifunctional properties. The main reason is that there is insufficient awareness of how to obtain such material. In this brief review, we summarized the molecular materials with this characteristic. The structural phase transition of substances will cause changes in their physical properties, as the electronic configurations of the active unit in different structural phases are different. Therefore, we will classify and describe the multifunctional synergistic complexes based on the structural factors that cause the first-order phase transition of the complexes. This enables us to quickly screen complexes with synergistic responses to these properties through structural phase transitions, providing ideas for studying the synergistic response of physical properties in molecular materials.
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Affiliation(s)
- Ling-Ao Gui
- Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou, China
| | - Yi-Fan Zhang
- Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou, China
| | - Yan Peng
- Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou, China
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou, China
| | - Zhao-Bo Hu
- Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou, China
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou, China
| | - You Song
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
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2
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Manna F, Oggianu M, Galán-Mascarós JR, Pop F, Le Guennic B, Mercuri ML, Avarvari N. Tuning the slow magnetic relaxation with the substituents in anilate bridged bis(dysprosium) complexes. Dalton Trans 2024; 53:8369-8381. [PMID: 38669068 DOI: 10.1039/d4dt00175c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2024]
Abstract
Dinuclear lanthanide complexes [((HB(pz)3)2Dy)2(μ-Th2An)] (1Dy) and [((HB(pz)3)2Dy)2(μ-ClCNAn)] (2Dy), based on the hydrotris(pyrazol-1-yl)borate (HBpz3-) scorpionate capping ligand and anilate (An2-) bridging linkers, namely homosubstituted dithiophene- and heterosubstituted chlorocyanoanilate, bearing electron-donating and withdrawing substituents at the 3,6-positions of the benzoquinone core, are reported. 1Dy shows an octacoordinated {N6O2} DyIII ion within a D4h distorted square antiprismatic coordination, an ideal geometry for Single-Molecule Magnet (SMM) behavior, given its oblate nature, whereas in 2Dy the octacoordinated DyIII ion adopts a D2d triangular dodecahedron geometry, while maintaining the same {N6O2} coordination sphere. Both complexes show field-induced single molecule magnet (SMM) behaviour, with tuning of the slow magnetic relaxation as a function of the nature of the substituents at the 3,6-positions of the anilate moiety. A comparison of the Arrhenius fitting parameters for 1Dy and 2Dy supports the hypothesis that square antiprismatic DyIII complexes, as 1Dy, exhibit higher energy barriers. This interpretation is supported by ab initio calculations that also shed light on the crucial role of intermolecular dipolar interactions.
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Affiliation(s)
- Fabio Manna
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, I-09042 Monserrato, Italy.
- Univ Angers, CNRS, MOLTECH-ANJOU, SFR MATRIX, F-49000 Angers, France.
- INSTM, Via Giuseppe Giusti, 9, 50121 Firenze, Italy
| | - Mariangela Oggianu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, I-09042 Monserrato, Italy.
- INSTM, Via Giuseppe Giusti, 9, 50121 Firenze, Italy
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, E-43007 Tarragona, Spain
- ICREA, Passeig Lluis Companys, 23, Barcelona 08010, Spain
| | - Flavia Pop
- Univ Angers, CNRS, MOLTECH-ANJOU, SFR MATRIX, F-49000 Angers, France.
| | - Boris Le Guennic
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Maria Laura Mercuri
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, I-09042 Monserrato, Italy.
- INSTM, Via Giuseppe Giusti, 9, 50121 Firenze, Italy
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-ANJOU, SFR MATRIX, F-49000 Angers, France.
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Jeong AR, Park SR, Shin JW, Kim J, Tokunaga R, Hayami S, Min KS. Mononuclear Fe(III) complexes with 2,4-dichloro-6-((quinoline-8-ylimino)methyl)phenolate: synthesis, structure, and magnetic behavior. Dalton Trans 2024; 53:6809-6817. [PMID: 38545959 DOI: 10.1039/d3dt04385a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Three Fe(III)-based coordination complexes [Fe(dqmp)2](NO3)·H2O (1), [Fe(dqmp)2](BF4)·2CH3COCH3 (2), and [Fe(dqmp)2](ClO4) (3) were synthesized from Fe(NO3)3·9H2O/Fe(ClO4)3·xH2O, NaBF4, and 2,4-dichloro-6-((quinoline-8-ylimino)methyl)phenol (Hdqmp) in methanol/acetone and characterized. The structures of complexes 1-3 were determined via single-crystal X-ray crystallography at 100 K and room temperature, and their magnetic properties in the solid and solution forms were investigated. All complexes showed meridional structures with two tridentate dqmp- ligands coordinated with Fe(III) cations. In the solid state, complex 1 showed an abrupt and complete spin crossover at 225 K, whereas complexes 2 and 3 exhibited an incomplete spin crossover at 135 and 150 K, respectively. In a dimethylformamide solution, the complexes showed counterion-dependent spin transitions. In contrast to the solid state, in solution, complex 1 did not exhibit complete spin crossover. However, complexes 2 and 3 showed more complete spin transitions in solutions than in the solid state. The relaxation times, T1 and T2, for 1 and 2 were determined and both increased with temperature from 220 to 380 K. The T1 of 1 was larger than that of 2 at 380 K, and the T1 values were larger than the T2 values.
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Affiliation(s)
- Ah Rim Jeong
- Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Si Ra Park
- Department of Chemistry Education, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Jong Won Shin
- Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Jihyun Kim
- Department of Chemistry Education, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Ryuya Tokunaga
- Department of Chemistry, Kumamoto University, Kumamoto 860-8555, Japan
| | - Shinya Hayami
- Department of Chemistry, Kumamoto University, Kumamoto 860-8555, Japan
| | - Kil Sik Min
- Department of Chemistry Education, Kyungpook National University, Daegu 41566, Republic of Korea.
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Dunstan MA, Giansiracusa MJ, Calvello S, Sorace L, Krause-Heuer AM, Soncini A, Mole RA, Boskovic C. Ab initio-based determination of lanthanoid-radical exchange as visualised by inelastic neutron scattering. Chem Sci 2024; 15:4466-4477. [PMID: 38516080 PMCID: PMC10952085 DOI: 10.1039/d3sc04229d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 02/12/2024] [Indexed: 03/23/2024] Open
Abstract
Magnetic exchange coupling can modulate the slow magnetic relaxation in single-molecule magnets. Despite this, elucidation of exchange coupling remains a significant challenge for the lanthanoid(iii) ions, both experimentally and computationally. In this work, the crystal field splitting and 4f-π exchange coupling in the erbium-semiquinonate complex [ErTp2dbsq] (Er-dbsq; Tp- = hydro-tris(1-pyrazolyl)borate, dbsqH2 = 3,5-di-tert-butyl-1,2-semiquinone) have been determined by inelastic neutron scattering (INS), magnetometry, and CASSCF-SO ab initio calculations. A related complex with a diamagnetic ligand, [ErTp2trop] (Er-trop; tropH = tropolone), has been used as a model for the crystal field splitting in the absence of coupling. Magnetic and INS data indicate antiferromagnetic exchange for Er-dbsq with a coupling constant of Jex = -0.23 meV (-1.8 cm-1) (-2Jex formalism) and good agreement is found between theory and experiment, with the low energy magnetic and spectroscopic properties well modelled. Most notable is the ability of the ab initio modelling to reproduce the signature of interference between localised 4f states and delocalised π-radical states that is evident in the Q-dependence of the exchange excitation. This work highlights the power of combining INS with EPR and magnetometry for determination of ground state properties, as well as the enhanced capability of CASSCF-SO ab initio calculations and purposely developed ab initio-based theoretical models. We deliver an unprecedentedly detailed representation of the entangled character of 4f-π exchange states, which is obtained via an accurate image of the spin-orbital transition density between the 4f-π exchange coupled wavefunctions.
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Affiliation(s)
- Maja A Dunstan
- School of Chemistry, The University of Melbourne Parkville VIC 3010 Australia
| | | | - Simone Calvello
- School of Chemistry, The University of Melbourne Parkville VIC 3010 Australia
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001 Kirrawee DC 2232 Australia
| | - Lorenzo Sorace
- INFN Sez. di Firenze, Department of Chemistry, "Ugo Schiff", Università Degli Studi Firenze Via Della Lastruccia, 13 50019 Sesto Fiorentino Italy
| | - Anwen M Krause-Heuer
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001 Kirrawee DC 2232 Australia
| | - Alessandro Soncini
- School of Chemistry, The University of Melbourne Parkville VIC 3010 Australia
- Department of Chemical Sciences, University of Padova Via Marzolo 1 35131 Padova Italy
| | - Richard A Mole
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001 Kirrawee DC 2232 Australia
| | - Colette Boskovic
- School of Chemistry, The University of Melbourne Parkville VIC 3010 Australia
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Satpute N, Ghosh MK, Kesharwani A, Ghorai TK. Biosynthesis of JC-La 2CoO 4 magnetic nanoparticles explored in catalytic and SMMs properties. Sci Rep 2023; 13:22122. [PMID: 38092788 PMCID: PMC10719267 DOI: 10.1038/s41598-023-47852-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 11/19/2023] [Indexed: 12/17/2023] Open
Abstract
We have reported the synthesis of JC-La2CoO4 magnetic nanoparticles from Jatropha Curcas L. leaf extract in aqueous medium and potential application study in catalytic & Single Molecule Magnets (SMMs). Several techniques were used to investigate the structural, morphological, and elemental composition, particle size, optical properties, catalytic and magnetic properties by XRD, FTIR, SEM, EDAX, XPS, UV-visible and squid magnetic measurement. It was found that the crystallite sizes and grain sizes of JC-La2CoO4 NPs were 11.3 ± 1 and 24.1 ± 1 nm respectively and surface morphology of the nanoparticles looks spherical shape with good surface area. The band gap of JC-La2CoO4 was found to be 4.95 eV indicates good semiconductor in nature. XPS studies shows that La and Co present in + 3 and + 2 oxidation state respectively and suggest the composition formula is La2CoO4 with satisfied all the valency of metal ions. The photocatalytic efficiency of La2CoO4 shows good result against methylene blue (MB) compared to other dyes like MO, NO, RhB in presence of sunlight with rate constant 56.73 × 10-3 min-1 and completely degraded within 115 mints. The importance of JC-La2CoO4 has magnetic properties with antiferromagnetic coupling and SMMs properties with nature.
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Affiliation(s)
- Nilesh Satpute
- Nanomaterials and Crystal Design Laboratory, Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484887, India
| | - Mithun Kumar Ghosh
- Nanomaterials and Crystal Design Laboratory, Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484887, India
- Department of Chemistry, Govt. College Hatta, Damoh, Madhya Pradesh, 470775, India
| | - Aparna Kesharwani
- Nanomaterials and Crystal Design Laboratory, Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484887, India
| | - Tanmay Kumar Ghorai
- Nanomaterials and Crystal Design Laboratory, Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484887, India.
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Kaushik K, Mehta S, Das M, Ghosh S, Kamilya S, Mondal A. Stimuli-responsive magnetic materials: impact of spin and electronic modulation. Chem Commun (Camb) 2023; 59:13107-13124. [PMID: 37846652 DOI: 10.1039/d3cc04268e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Addressing molecular bistability as a function of external stimuli, especially in spin-crossover (SCO) and metal-to-metal electron transfer (MMET) systems, has seen a surge of interest in the field of molecule-based magnetic materials due to their enormous potential in various technological applications such as molecular spintronics, memory and electronic devices, switches, sensors, and many more. The fine-tuning of molecular components allow the design and synthesis of materials with tailored properties for these vast applications. In this Feature Article, we discuss a part of our research work into this broad topic, pertaining to the recent discoveries in the field of switchable molecular magnetic materials based on SCO and MMET systems, along with some historical background of the area and related accomplishments made in recent years.
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Affiliation(s)
- Krishna Kaushik
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Mayurika Das
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sounak Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
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