A Neodymium(III)-Based Hydrogen-Bonded Bilayer Framework with Dual Functions: Selective Ion Sensing and High Proton...

Area of Science:

• Materials Science
• Inorganic Chemistry
• Crystallography

Background:

• Lanthanide hydrogen-bonded organic frameworks (Ln-HOFs) are promising for sensing and energy applications.
• Challenges exist in balancing stability and functional diversity in Ln-HOFs.

Purpose of the Study:

• To synthesize and characterize a novel neodymium(III)-based HOF with dual luminescent and proton-conductive properties.
• To explore the potential applications of this material in environmental monitoring and energy.

Main Methods:

• Hydrothermal assembly using a specific ligand (H2(4-CPCA)).
• Single-crystal X-ray diffraction and Hirshfeld surface analysis for structural determination.
• Luminescence spectroscopy and proton conductivity measurements.

Main Results:

• Successful synthesis of a 2D hydrogen-bonded bilayer structure (SNUT-15).
• Selective fluorescence quenching for Fe3+, La3+, and Mn2+ detection.
• High proton conductivity (7.92 × 10-3 S cm-1) at 98% RH and 353 K.

Conclusions:

• SNUT-15 exhibits dual functionality, making it a promising multifunctional material.
• The material demonstrates potential for environmental sensing and solid-state electrolytes.
• Provides insights into designing advanced lanthanide-based frameworks.