Bispidine-Based Copper(II) Coordination Polymers with Remarkable Dynamic Properties, Selective Volatile Organic...

Area of Science:

• Materials Science
• Coordination Chemistry
• Nanotechnology

Background:

• Bispidine ligands offer unique coordination environments for metal ions.
• Coordination polymers (CPs) are investigated for their dynamic properties and adsorption capabilities.
• Controlling CP dimensionality is crucial for tuning material performance.

Purpose of the Study:

• To synthesize and characterize novel bispidine-based Cu(II) coordination polymers.
• To investigate the dynamic properties, solvent exchange, and VOC adsorption of these CPs.
• To understand the influence of CP dimensionality on their functional behavior.

Main Methods:

• Single-crystal X-ray diffraction (SC-XRD) and Powder X-ray diffraction (P-XRD) for structural analysis.
• Hirshfeld Surface (HS) analysis and in situ variable-temperature (VT) XRD for interchain interactions.
• Solvent exchange experiments on single crystals and microcrystalline samples.
• Volatile organic compound (VOC) adsorption experiments on an amorphous desolvated phase.

Main Results:

• Formation of 1D ribbon-like and 2D extended Cu(II) coordination polymer frameworks.
• Distinct interchain interactions observed in 1D versus 2D CPs.
• Significant impact of CP dimensionality on dynamic behavior and solvent exchange.
• Selective adsorption of acetonitrile and nitromethane, with high affinity for nitromethane, and capture of aromatic VOCs by the amorphous phase.

Conclusions:

• Bispidine-based Cu(II) CPs display remarkable dynamic properties and selective VOC adsorption.
• CP dimensionality is a key factor controlling their functional characteristics.
• These materials show potential for environmental and industrial applications in VOC capture technologies.