Catalysis

Engineering

Statistics

Materials science

Gaseous diffusion

Absorption (acoustics)

Biochemistry

Chemical engineering

Gas separation

Porosity

Physical chemistry

Polymer

Argon

Thermodynamics

Physics

Nanotechnology

Organic chemistry

Membrane

Diffusion

Mathematics

Argon gas

Composite material

Nanoporous

Chemistry

Selectivity

Electrode

Flexibility (engineering)

Science

Flexibility in gas absorption Soft materials such as porous coordination polymer (PCP) can exhibit temperature-dependent flexible motions of their internal pores that can assist in gas separation and storage. Gu et al. designed a copper-based PCP with a ligand that contains phenothiazine-5,5-dioxide. The entrances to the porous cages changed size with temperature, when these functional groups underwent flipping motions. The change in gate size could lead to high selectivity for gas absorption and enabled the separation of oxygen from argon and of ethylene from ethane as well as long-term gas storage under ambient conditions. Science , this issue p. 387

Design and control of gas diffusion process in a nanoporous soft crystal