In this presentation, I will give a brief overview of metal-organic frameworks for the non-expert. The talk will also detail our efforts toward increasing the structural and functional complexity of MOF crystals. A typical MOF is an extended, periodic network consisting of a single ligand and a single metal ion/metal cluster; apart from defects, the MOF crystal can be considered homogeneous throughout. Our work is focused on building MOFs that have multiple different structural and functional domains or multiple different metal clusters precisely distributed throughout a single crystal. We are developing several strategies toward achieving these aims, each of which will be presented. Particular focus will be given to ligand exchange phenomena in mesoporous metal-adeninate-carboxylate MOFs and the design and construction of stratified MOFs.
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