Amorphous Metal-organic Frameworks: Structure, Properties and Application

Amorphous metal-organic frameworks for drug delivery.

We report the encapsulation of the hydrophilic model molecule calcein in the Zr-based MOF UiO-66, followed by amorphization of the framework by ball-milling. We show controlled release of calcein over more than 30 days, compared with the 2 day release period from crystalline UiO-66.

Structure and properties of an amorphous metal-organic framework.

ZIF-4, a metal-organic framework (MOF) with a zeolitic structure, undergoes a crystal-amorphous transition on heating to 300 degrees C. The amorphous form, which we term a-ZIF, is recoverable to ambient conditions or may be converted to a dense crystalline phase of the same composition by heating to 400 degrees C. Neutron and x-ray total scattering data collected during the amorphization proces...

Metal-organic frameworks: structure, properties, methods of synthesis and characterization

Distinguishing Metal–Organic Frameworks

We consider two metal-organic frameworks as identical if they share the same bond network respecting the atom types. An algorithm is presented that decides whether two metal-organic frameworks are the same. It is based on distinguishing structures by comparing a set of descriptors that is obtained from the bond network. We demonstrate our algorithm by analyzing the CoRe MOF database of DFT opti...

Ferroelectric metal-organic frameworks.

Xuan Zhang Advisor: Prof. Kim R. Dunbar Apr. 16, 2012 Room 2102 Ever since its appearance about 17 years ago, 1 the term Metal-Organic Frameworks (MOFs) has been gaining tremendous attention in chemistry and crystal engineering because of the fascinating solid state materials it pertains to. These MOFs, also known as porous coordination polymers (PCPs) are characterized by their high porosity, ...