CPHATN-(TCB) and CPHATN-1a (IMAGE) Hokkaido University Caption Image of the created hydrogen-bonding organic framework CPHATN-(TCB) (left), and its activated version, CPHATN-1a (right). Credit Photo credit: Hisaki I. <em>et al</em>., Acid Responsive Hydrogen-Bonded Organic Frameworks, <em>Journal of the American Chemical Society</em>, January 7, 2019.) Usage Restrictions This image is copyrighted and can be used for reporting this press release if properly credited. 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.