A5046443056- Lanthanide and Transition Metal Complexes
- Magnetism in coordination complexes
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and Properties of Aromatic Compounds
- Advanced NMR Techniques and Applications
- Metal complexes synthesis and properties
- Molecular spectroscopy and chirality
- Chemical Thermodynamics and Molecular Structure
- Radioactive element chemistry and processing
- Molecular Sensors and Ion Detection
- Luminescence Properties of Advanced Materials
Institut des Sciences Chimiques de Rennes
2021-2025
Université de Rennes
2021-2025
Centre National de la Recherche Scientifique
2021-2025
University of Manchester
2024
Here we report the first experimental observation of magneto-chiral dichroism (MChD) detected through light absorption in an enantiopure lanthanide complex. The P and M enantiomers [YbIII((X)-L)(hfac)3] (X = P, M; L 3-(2-pyridyl)-4-aza[6]-helicene; hfac 1,1,1,5,5,5-hexafluoroacetylacetonate), where chirality is held by helicene-based ligand, were studied near-infrared spectral window. When irradiated with unpolarized a magnetic field, these chiral complexes exhibit strong MChD signal (gMChD...
The combination of physical properties sensitive to molecular chirality in a single system allows the observation fascinating phenomena such as magneto-chiral dichroism (MChD) and circularly polarized luminescence (CPL) having potential applications for optical data readout display technology. Homochiral monodimensional coordination polymers Yb
The NIR circularly polarized luminescence of erbium complexes is strongly dependent on the experimental conditions and in particular bandwidth.
Chiral, enantiopure Yb(III) complexes exhibit circularly polarized luminescence (CPL) in the near infrared (NIR) wavelength region. This CPL is quantified by dissymmetry factor (
Here we report magneto-chiral dichroism (MChD) detected through visible and near-infrared light absorption of a chiral dysprosium(III) coordination polymer. The two enantiomers [DyIII(H6(py)2)(hfac)3]n [H6(py)2 = 2,15-bis(4-pyridyl)ethynylcarbo[6]helicene; hfac- 1,1,1,5,5,5-hexafluoroacetylacetonate], where the chirality is provided by functionalized helicene ligand, were structurally, spectroscopically, magnetically investigated. Magnetic measurements reveal slow relaxation magnetization,...
Abstract Enantiopure helicene‐based bis(pyrazol‐1‐yl)pyridine (bpp‐[6]helicene), with the helicene unit in position 4 of pyridine ring, have been prepared and structurally characterized. Their chiroptical properties studied experimentally, both absorption circular dichroism (CD) spectra reproduced theoretically by time‐dependent density functional theory (TDDFT). Remarkably, spite remote localization respect to coordination pocket bpp motif, chiral Eu(III) complexes based on these ligands...
Abstract The combination of physical properties sensitive to molecular chirality in a single system allows the observation fascinating phenomena such as magneto‐chiral dichroism (MChD) and circularly polarized luminescence (CPL) having potential applications for optical data readout display technology. Homochiral monodimensional coordination polymers Yb III were designed from 2,15‐bis‐ethynyl‐hexahelicenic scaffold decorated with two terminal 4‐pyridyl units. Thanks chiral organic...
Correlating the molecular structure with electronic of lanthanide(III) solvates is a challenging task. Neodymium(III) in aqueous solution serves as an appealing and straightforward model to address this issue. Herein, experimentally determined neodymium(III) water compared ab initio calculated structures based on various models its structure. This comparison enables determination most reliable The findings reveal that aqua ion best aligns corresponds nine coordinated complex, surrounded by...
Chiral 2,6-bis(pyrazol-1-yl)pyridine (bpp) ligands containing camphor units fused to the pyrazole rings have been used in their enantiopure, racemic and meso forms prepare luminescent europium(III) complexes. The ligands, for which connection between pyrazoles pyridine is through N2 nitrogen atom, fully characterized by single crystal X-ray diffraction chiroptical spectroscopy. Alternatively, one of enantiopure namely bis(4S,7R)camphor-2,2-bpp, regioisomer bis(4S,7R)camphor-1,2-bpp,...
The present study aims to gain insight into the circularly polarised luminescence (CPL) of lanthanide complexes through angle one their elements, namely Samarium.
Neodymium(III) is a NIR emissive and magnetic ion, which has found use in various high-technology applications. Yet, accurate predictions of the luminescent properties neodymium(III) based on coordination environment remain to be done. Guideline exists, but build structure-property relationships for this element, more data are needed. Herein, we present high-symmetry starting point. The tris(oxydiacetate) complex was prepared crystallised, access experimentally determined structure allows us...
Neodymium(III) is a near-infrared emissive and magnetic ion, which has found use in various high-technology applications. Yet, accurate predictions of the luminescent properties neodymium(III) based on coordination environment remain to be done. Guidelines exist, but build structure-property relationships for this element, more data are needed. Herein, we present high-symmetry starting point. The tris(oxidiacetate) complex was prepared crystallized, access experimentally determined structure...
This article outlines the synthesis and comprehensive characterization of a pair Er(III) enantiomers with controlled helicity. These complexes exhibit near-infrared circularly polarized luminescence (NIR-CPL) signature high glum values ± 0.66 at 1519 nm room temperature. However, due to large number potential transitions this temperature owed crystal field splitting, CPL pattern likely results from overlapping many positive negative contributions. study explores how reducing effective...