Under the microscope (IMAGE) University at Buffalo Caption A microscope image showing a porous, crystalline material called a metal-organic framework, or MOF (the material in purple). This MOF is made from cobalt(II) sulfate heptahydrate, 5-aminoisophthalic acid and 4,4'-bipyridine, and it is shown in its hydrated state. Credit Travis Mitchell Usage Restrictions This image may only be used with news reports discussing the research in the related press release. 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.