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Crystal engineering of rare earth heteroleptic complexes: phosphine oxide ligand control, POM-directed assembly, and performance metrics.

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Title: Crystal engineering of rare earth heteroleptic complexes: phosphine oxide ligand control, POM-directed assembly, and performance metrics.
Authors: Xu, Jian-Jie1 (AUTHOR), Wang, Lin-Lin1,2 (AUTHOR), Wang, Ying-Long1 (AUTHOR), Guo, Gui-Xiong1 (AUTHOR), Liu, Jian-Ming3 (AUTHOR), Dai, Li-Xiong4 (AUTHOR), Liu, Min5 (AUTHOR), Jin, Qiong-Hua1,2,6 (AUTHOR) jinqh204@163.com
Source: CrystEngComm. 8/28/2025, Vol. 27 Issue 32, p5389-5397. 9p.
Subjects: Phosphine oxides, Luminescence, Smart materials, Photodegradation, Supramolecular chemistry, Rare earth oxides
Abstract: This study explores crystal engineering strategies for rare earth heteroleptic complexes, focusing on ligand design, supramolecular control, and functional performance. Phosphine oxide ligands (TPPO) synergize steric/electronic effects to stabilize coordination geometries, while mixed-ligand systems (e.g., TPPO/phen) enhance Eu3+ luminescence (26.88% quantum yield). Polyoxometalates (POMs) template 3D architectures via hydrogen/charge interactions, enabling >95% photocatalytic dye degradation and >200 °C thermal stability. Rare earth-transition metal systems integrate 2D/3D topologies and multifunctionality (luminescence, gas adsorption) through electronic coupling. Additionally, carbon-based oxygen ligand systems (e.g., β-diketonates) demonstrate the applicability of these core strategies—leveraging synergistic N-donor coordination and supramolecular interactions to achieve advanced functionalities like temperature-responsive luminescence. Future work will prioritize flexible ligand engineering and stimuli-responsive designs for applications in clean energy and quantum technologies, establishing a roadmap for advanced rare earth materials. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:This study explores crystal engineering strategies for rare earth heteroleptic complexes, focusing on ligand design, supramolecular control, and functional performance. Phosphine oxide ligands (TPPO) synergize steric/electronic effects to stabilize coordination geometries, while mixed-ligand systems (e.g., TPPO/phen) enhance Eu3+ luminescence (26.88% quantum yield). Polyoxometalates (POMs) template 3D architectures via hydrogen/charge interactions, enabling >95% photocatalytic dye degradation and >200 °C thermal stability. Rare earth-transition metal systems integrate 2D/3D topologies and multifunctionality (luminescence, gas adsorption) through electronic coupling. Additionally, carbon-based oxygen ligand systems (e.g., β-diketonates) demonstrate the applicability of these core strategies—leveraging synergistic N-donor coordination and supramolecular interactions to achieve advanced functionalities like temperature-responsive luminescence. Future work will prioritize flexible ligand engineering and stimuli-responsive designs for applications in clean energy and quantum technologies, establishing a roadmap for advanced rare earth materials. [ABSTRACT FROM AUTHOR]
ISSN:14668033
DOI:10.1039/d5ce00455a