image 1 (IMAGE) Shinshu University Caption Comparison of S at different times at 100?K and 112?K for the CDC in this work with other separation methods from the literature. The inset shows illustrative models for the pore filling of CDC by O2-16 and O2-18 molecules after 1?min and 30?min. Credit Copyright 2021, Nature Communications, Licensed under CC BY 4.0 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.