But I have a hard time imagining things I can’t see, so for this exercise, imagine a cubic crystal made of marshmallows and toothpicks. Just a giant cube made out of smaller cubes with a marshmallow at each vertex, connected by toothpicks. The marshmallows, then, put the metal in MOF. And the toothpicks are the organic part. In MOF language, the marshmallows would be the anchors or secondary building units, the toothpicks are the organic struts. In MOF-5, the anchors are octahedral zinc oxide clusters. And the struts are 1,4-benzodicarboxylic acid, which is basically a benzene ring with two stubby arms on either side to grab onto zinc oxide anchors.
by Matt Davenport |
February 28, 2018