Entangled Porous (IMAGE) Kyoto University Caption Entangled porous coordination polymers like 'wire-and string puzzles' enable reversible and repeatable photomodulation of CO2 sorption. The single crystals of the porous material showed a drastic color change upon irradiation of ultraviolet and visible light. Credit Kyoto University iCeMS 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.