#How a crystalline sponge sheds water molecules
“#How a crystalline sponge sheds water molecules” 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 How does water leave a sponge? In…