A5082710009- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Metal-Organic Frameworks: Synthesis and Applications
- Organic and Molecular Conductors Research
- Crystallography and molecular interactions
- Metal-Catalyzed Oxygenation Mechanisms
- Porphyrin and Phthalocyanine Chemistry
- Metal complexes synthesis and properties
- Advanced NMR Techniques and Applications
- Electron Spin Resonance Studies
- Polyoxometalates: Synthesis and Applications
- Liquid Crystal Research Advancements
- Magnetic and transport properties of perovskites and related materials
- Nonlinear Optical Materials Research
- Surfactants and Colloidal Systems
- Organometallic Complex Synthesis and Catalysis
- Photonic Crystals and Applications
- Shape Memory Alloy Transformations
- Polymer Nanocomposites and Properties
- Inorganic Fluorides and Related Compounds
- Crystal structures of chemical compounds
- Terahertz technology and applications
- Nanocluster Synthesis and Applications
The University of Tokyo
2017-2024
Jagiellonian University
2011-2022
Institut de Chimie de la Matière Condensée de Bordeaux
2014-2021
Institut Polytechnique de Bordeaux
2014-2021
Université de Bordeaux
2014-2021
Bipar
2021
Centre National de la Recherche Scientifique
2014-2019
Faculty (United Kingdom)
2015
Abstract A huge increase in the magnetization of two coordination chains based on tetravalent octacyanidometalates (W IV and Mo ) is observed irradiation with 436 nm light, while no such behavior for Nb analogue. photomagnetic response solely [W (CN) 8 ] 4− demonstrated first time. The attributed to light‐induced excited spin state trapping (LIESST) effect at octacyanidometalate, resulting magnetic exchange ON/OFF photoswitching between Mn II center photoinduced high‐spin ( S =1) W or centers.
Self-assembly of lanthanide(III) complexes 2,2′:6′,2″-terpyridine (terpy) with dicyanidoargentate(I) and dicyanidoaurate(I) anions in water results the formation six isostructural dinuclear systems [LnIII(terpy)(H2O)(NO3)2][MI(CN)2] (LnIII/MI = Dy/Ag, 1; Dy/Au, 2; Yb/Ag, 3; Yb/Au, 4; Er/Ag, 5; Er/Au, 6). They form three-dimensional supramolecular networks based on molecules linked by hydrogen bonds, π–π interactions, argentophilic (Ag···Ag) or aurophilic (Au···Au) interactions. All...
Solid refrigerants exhibiting a caloric effect upon applying external stimuli are receiving attention as one of the next-generation refrigeration technologies. Herein, we report new inorganic refrigerant, rubidium cyano-bridged manganese-iron-cobalt ternary metal assembly (cyano-RbMnFeCo). Cyano-RbMnFeCo shows reversible barocaloric with large adiabatic temperature changes 74 K (from 57 °C to -17 °C) at 340 MPa, and 85 88 3 560 MPa. Such have yet be reported among effects in solid-solid...
Spin-transition compounds are coordination complexes that can present two stable or metastable high-spin and low-spin states at a given temperature (thermal hysteresis). The width of the thermal hysteresis (difference between maximum minimum which compound exhibits bi-stability) depends on interactions within compound, may be modulated by absence presence solvent structure. new [Fe(3-bpp)2 ][Au(CN)2 ]2 (1, 3-bpp=2,6-di-(1H-pyrazol-3-yl)pyridine) was synthesized its properties were compared...
The photoinduced properties of the octacoordinated complex K4 MoIV (CN)8 ⋅2 H2 O were studied by theoretical calculations, crystallography, and optical magnetic measurements. crystal structure recorded at 10 K after blue light irradiation reveals an heptacoordinated Mo(CN)7 species originating from light-induced cleavage one Mo-CN bond, concomitant with formation a paramagnetic signal. When this is heated to 70 K, it returns its original diamagnetic ground state, demonstrating full...
Self-assembly of β-diketonate (Htta = thenoyl(trifluoro)acetone) and 4,4'-azopyridine (Azo-py) with neodymium(iii) ions in the presence methanol resulted formation mononuclear complex [NdIII(TTA)3(MeOH)2]·0.5Azo-py (A) which two asymmetric units are linked by Azo-py through hydrogen bonding via methanol. A reveals near-infrared emission (NIR) centred at about 895 1056 nm, 10-370 K temperature range, originating from emissive transitions on Nd(iii) 4F3/2 to 4I9/2 4I11/2 levels, respectively....
In this paper, for the first time, influence of BaTiO3 particles on antiferroelectric liquid crystalline phase was shown. Low concentrations and two different sizes (nano- submicroparticles) were used. It found that admixture ferroelectric causes a decrease in concentration free ions crystal matrix. Despite small amount admixture, spontaneous polarization, switching time rotational viscosity, observed, while tilt angle molecules smectic layer thickness did not change. turns out have very...
A novel 1-D photomagnetic L-Cu<sup>II</sup>–[Mo<sup>IV</sup>(CN)<sub>8</sub>]<sup>4−</sup> complex was obtained, in which the effect is fully reversible by heating above 253 K, and partially irradiation with red infrared light.
Abstract The development of multifunctional oriented polar crystals combining diverse optical, nonlinear and magnetic phenomena are desirable. Two enantiomorphic assemblies [Yb III (TPPO) 3 (NCE) ] (E = S (“ YbS ”), Se YbSe ”); TPPO triphenylphosphine oxide) prepared. Both crystallites show ultralow‐frequency (ULF) Raman scattering for molecular materials with a value 16 cm −1 (0.48 THz), originating from collective vibrations the ligand pseudohalides, which is supported by ab initio...
Abstract Molecular crystals acting as temperature sensors, designed for multiple measurement techniques, can be a promising pathway self‐calibrating thermometers. The molecular assemblies [Dy x III Y 1–x (phen) 2 (μ‐OH) (H O) ]·[Au I (SCN) ] ·phen·0.5MeCN·0.5H O ( = 0, 0.1, 0.02; phen 1,10‐phenanthroline) which contain weakly bonded lanthanide(III) and Au(I) metal complexes are reported. They have Raman scattering in the low‐frequency (LF) region with sharp peaks, one of prerequisites to...
A photoswitchable ferromagnetic thin film is developed based on a cyanide-bridged RbCuMo complex. Terahertz spectroscopy indicates that the photoreversibility due to flexibility of Rb intercalated network structure.
The dependence of nonlinear optical properties upon the spin state in molecular switches is still an unexplored area. Chiral [Fe( phen)3]2+ complexes are excellent candidates for those studies because they expected to show interest and at same time photoconversion a short-lived metastable high-Spin by ultrafast pumping. Herein, we present synthesis, crystallographic, spectroscopic comparison chiral obtained with anions, new lipophilic derivative D2-symmetric (As2(tartrate)2)2-, D3-symmetric...
Abstract A huge increase in the magnetization of two coordination chains based on tetravalent octacyanidometalates (W IV and Mo ) is observed irradiation with 436 nm light, while no such behavior for Nb analogue. photomagnetic response solely [W (CN) 8 ] 4− demonstrated first time. The attributed to light‐induced excited spin state trapping (LIESST) effect at octacyanidometalate, resulting magnetic exchange ON/OFF photoswitching between Mn II center photoinduced high‐spin ( S =1) W or centers.
We report a new bimetallic cyanido-bridged trinuclear complex [CuII(enpnen)]2[MoIV(CN)8]·6.75H2O (1) (enpnen = N,N'-bis(2-aminoethyl)-1,3-propanediamine) that shows reversible photomagnetic effect. The photo-induced increase of magnetization is characterized by the irradiation temperature-dependent shapes χM T( T) plots and different values at low temperature in high magnetic field, suggesting multiple photoexcited states. effect 1 explained through two possible processes simultaneously:...
Two new complexes [Fe(3-bpp)<sub>2</sub>](XO<sub>4</sub>)<sub>2</sub>·solv (X = Cl, <bold>1</bold> and Re, <bold>2</bold>) have been prepared. Both systems show desolvation-assisted spin crossover (DASCO) light-induced excited spin-state trapping (LIESST) phenomena.
Gold complexes can generate excimers ([Au2 ]→[Au2 ]*) and exciplexes ([Au3 ]→[Au3 with light excitation. Four GdIII YIII were assembled dimeric {[Au(SCN)2 ]- }2 trimeric }3 bis(thiocyanato)gold(I) counterions. The vibrational signature associated the Au⋅⋅⋅Au mode was probed ultralow frequency (ULF) Raman spectroscopy as a function of temperature. Emission used to explore photophysical properties. Two broad features in high- low-energy regions fluorescence phosphorescence gold entities,...
Uncommon lanthanides are used to construct luminescent molecular nanomagnets and a pioneering SMM-based optical thermometer utilizing Sm( iii ) centres.
Modification of the physical properties (S)-MHPOBC antiferroelectric liquid crystal (AFLC) by doping with low concentrations gold nanoparticles is presented for first time. We used several complementary experimental methods to determine effect Au on AFLC in metal-organic composites. It was found that dopant inhibits matrix crystallization process and modifies phase transitions temperatures switching time, as well increases helical pitch spontaneous polarization, while tilt angle slightly...
Three-dimensional (3-D) coordination networks provide a stable framework preferable to designing materials with tunable properties by various chemical modifications, such as solvent exchange, element doping, etc. In this work, we explored extensively the 3-D cyanido-bridged heterometallic assemblies having Nd(III) and Yb(III) centers in combination polycyanidocuprate(I) ions, that is, family of [Nd1–xIIIYbIIIx(2,2′-bpdo)2(H2O)][Cu2I(CN)5]·5H2O (x = 0, 0.25, 0.5, 0.75, 1 (1–5); 2,2′-bpdo...
New ionic and trinuclear copper( ii )–octacyanidomolybdate( iv ) systems were developed tested experimentally theoretically to improve understanding of the photomagnetic effects.
The self-assembly of [CuII(dien)(H2O)2]2+ and [WV(CN)8]3− in aqueous solution leads to the formation (H3O){[CuII(dien)]4[WV(CN)8]}[WV(CN)8]2·6.5H2O (1). crystal structure 1 consists an unprecedented {[CuII(dien)]4[WV(CN)8]}5+∞ chain (2,8) topology, nonbridging [W(CN)8]3− anions, crystallization water molecules. analysis magnetic behavior was performed by density functional theory (DFT) method susceptibility measurements. DFT broken symmetry approach gave two JCuW coupling constants: Jax =...
Molecular magnetism is a new and extremely fascinating field on the borders of chemistry, physics materials science. The design synthesis molecule-based magnets requires chemist to exert considerable control over molecules arrange them appropriately. It also demands development theories explain complex magneto-structural behaviour these intriguing solids. still at very early stage development. main challenge increase strength magnetic interactions between spin carriers so resulting can be...
The microwave-mediated self-assembly of [WV(CN)8]3- with CuII in the presence pyrazole ligand resulted formation three novel assemblies: CuII2(Hpyr)5(H2O)[WV(CN)8](NO3)·H2O (1), {CuII5(Hpyr)18[WV(CN)8]4}·[CuII(Hpyr)4(H2O)2]·9H2O (2), and CuII4(Hpyr)10(H2O)[WV(CN)8]2(HCOO)2·4.5H2O (3) (Hpyr =1H-pyrazole). Single-crystal X-ray structure 1 consists cyanido-bridged 1-D chains vertex-sharing squares topology. 2 reveals 2-D hybrid inorganic layer topology large coordination spaces occupied by...