Molecular model of COF-999 (IMAGE) University of California - Berkeley Caption The new porous material for capturing carbon dioxide, called a covalent organic framework (COF), has hexagonal channels decorated with polyamines that efficiently bind CO2 molecules (blue and orange balls) at concentrations found in ambient air. Credit Chaoyang Zhao for UC Berkeley Usage Restrictions none License Original 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.