Hexanuclear Molecular Precursors as Tools to Design Luminescent Coordination Polymers with Lanthanide Segregation

Area of Science:

• Materials Science
• Inorganic Chemistry
• Crystallography

Background:

• Lanthanide complexes are building blocks for advanced materials.
• Coordination polymers offer tunable properties for various applications.
• Understanding lanthanide ion distribution is crucial for functional materials.

Purpose of the Study:

• To synthesize novel 1D coordination polymers from hexanuclear lanthanide complexes.
• To investigate the structural and luminescent properties of these new materials.
• To explore the controlled synthesis of heterolanthanide coordination polymers.

Main Methods:

• Solvothermal synthesis reactions.
• Single-crystal X-ray diffraction for structural analysis.
• Luminescence spectroscopy for property evaluation.

Main Results:

• A series of isostructural 1D coordination polymers, [Ln2(2-bb)6]∞, were successfully synthesized for Ln = Sm, Eu, Tb, Dy, and Y.
• The europium- and terbium-based polymers displayed significant luminescence under UV excitation.
• Isostructural heterolanthanide coordination polymers were prepared, demonstrating controlled lanthanide-ion segregation.

Conclusions:

• The synthetic route yields novel 1D lanthanide coordination polymers.
• The materials exhibit promising luminescent properties, particularly for Eu and Tb derivatives.
• Controlled incorporation of different lanthanide ions into heterolanthanide structures is feasible, paving the way for tailored functional materials.