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Anisotropic lanthanide-based nano-clusters for imaging applications.

Xiaoping Yang¹, Shiqing Wang, Tyler L King

¹College of Chemistry and Materials Engineering, Wenzhou University, Zhejiang Key Laboratory of Carbon Materials, Wenzhou 325035, China. smhuang@wzu.edu.cn.

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|July 19, 2016

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New lanthanide nano-clusters self-assemble using flexible Schiff base ligands, forming distinct Cd-based nano-drums and Ni-based square structures. These novel nanomaterials show tunable photophysical properties, paving the way for advanced functional materials.

Area of Science:

Supramolecular Chemistry
Nanomaterials Science
Lanthanide Chemistry

Background:

Self-assembly is a key strategy for constructing complex molecular architectures.
Lanthanide clusters offer unique magnetic and photophysical properties.
Schiff base ligands provide versatile coordination environments for metal ions.

Purpose of the Study:

To develop a new class of lanthanide nano-clusters using flexible Schiff base ligands.
To investigate the structural diversity and self-assembly behavior of these nano-clusters.
To explore the photophysical properties and potential applications of the synthesized materials.

Main Methods:

Synthesis of Cd-Ln and Ni-Ln nano-clusters using various Schiff base ligands.
Structural characterization via X-ray crystallography, transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS).

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Photophysical property evaluation through solid-state and solution-state spectroscopy, and confocal microscopy.

Main Results:

Successfully synthesized Cd-Ln and Ni-Ln nano-clusters with anisotropic architectures.
Observed distinct nano-drum structures for Cd-containing clusters and square-like structures for Ni-containing clusters.
Demonstrated consistent size and structural features across different characterization techniques, suggesting stability in solid and solution states.
Reported varying emissive properties based on lanthanide and metal (Cd or Ni) combinations.

Conclusions:

Developed novel high-nuclearity lanthanide nano-clusters through self-assembly.
Established a correlation between ligand type, metal ion (Cd/Ni), and resulting nano-cluster architecture.
Highlighted the potential of these nano-clusters as a foundation for new functional nanomaterials with tunable photophysical properties.