Two-dimensional coordination polymers with high proton conductivity and ultrafast highly efficient molecular sieving...

Area of Science:

• Materials Science
• Chemistry
• Nanotechnology

Background:

• Coordination polymers offer tunable structures and properties.
• 2D-layered materials are of interest for separation and energy applications.

Purpose of the Study:

• To synthesize novel 2D-layered copper-based coordination polymers.
• To investigate their molecular sieving and proton conductivity properties.

Main Methods:

• Hydrothermal synthesis of copper coordination polymers using a zwitterion pyridiniumolate as a structural inductive agent.
• Characterization of material structure and properties.
• Evaluation of molecular sieving performance in aqueous systems.
• Measurement of proton conductivity under varying humidity and temperature.

Main Results:

• Three unique 2D-layered Cu-based coordination polymers (HNNU-1α, 1β, 1γ) were successfully constructed.
• HNNU-1α demonstrated ultrafast and highly efficient molecular sieving in water.
• HNNU-1α to 1γ exhibited good proton conductivity (2.2 × 10⁻², 4.9 × 10⁻⁵, and 3.0 × 10⁻⁴ S cm⁻¹ at 90 °C and 98% RH).

Conclusions:

• The synthesized coordination polymers possess unique structural and functional properties.
• HNNU-1α shows potential for advanced separation technologies.
• The materials demonstrate promising proton conductivity for electrochemical applications.