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Updated: Aug 28, 2025
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
S-Heptazine N-ligand based luminescent coordination materials: synthesis, structural and luminescent studies of
Mohamed Essalhi1, Midhun Mohan1, Gabriel Marineau-Plante2
1Département de Chimie, Biochimie et physique, Institut de Recherche sur l'Hydrogène, Laboratory of Functional Materials for Energy and Nanotechnology (DuongLab) and Université du Québec à Trois-Rivières, Trois-Rivières, Québec, G9A 5H7, Canada. adam.duong@uqtr.ca.
Abstract:
Various series of lanthanide metal-organic networks denoted Ln-Cy (Ln = La, Ce, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb), were synthesized under solvothermal conditions using potassium cyamelurate (K3Cy) and lanthanide nitrate salts. All obtained materials were fully characterized, and their crystal structures were solved by single-crystal X-ray diffraction. Four types of coordination modes were elucidated for the Ln-Cy series with different Ln3+ coordination geometries. Structural studies were performed to compare the various coordination compounds of the Ln-Cy series. Moreover, the cyamelurate linkers of rich π-conjugated and uncoordinated Lewis basic sites were used as an absorbing chromophore to enhance the luminescence quantum efficiency, the band emission and the luminescence lifetime of the coordinated Ln metal centers. Solid-state UV-visible measurements combined with density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations were performed to further explore luminescent features of the Ln-Cy series and their origins.
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