The Teets Group

Good Science...That's Our GuaranTeets

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Research Interests:

We are an inorganic chemistry group emphasizing synthetic and physical inorganic chemistry. We are primarily interested in the design of molecules with interesting photophysical properties, which we interrogate using a variety of physical techniques. We also maintain interests in small-molecule activation and homogeneous catalysis.

Phosphorescent Molecules

We are exploring different ligand design strategies to optimize the properties phosphorescent organometallic compounds. In particular, we are modifying ancillary ligands on heteroleptic bis-cyclometalated iridium complexes as a means of tailoring their properties. In one extreme, strong-field isocyanide ancillary ligands engenders good redox stability while retaining efficient phosphorescence. In the other extreme, we are employing weak-field β-ketominate and β-diketiminate ancillary ligands to design potent excited-state reductants. We have also recently discovered that fluorinated β-diketiminate give rise to ligand-centered phosphorescence in the red and near-infrared region, a previously unrecognized trait of this popular ligand class.

Secondary Coordination Sphere Interactions

In addition to using covalent ligand-design strategies, we are also designing luminescent molecules with pendant Lewis base functionalities which can interact with exogeneous Lewis acids to modulate the electronic structure. This approach allows for the rapid and systematic postsynthetic modification of the optical properties and permits facile optimization of those properties.

Formazanate Ligands

We are developing the coordination chemistry of redox-active formazanate ligands, primarily with third-row transition metals. We seek to understand the rich electronic structures and unveil potentially interesting reactivity when these redox-active ligands are partnered with redox-active transition metals.

Aerobic Oxidation of Alkanes

The selective oxidation of alkanes to oxygenated products, e.g. ketones, would provide a means of upgrading underutilized petroleum fractions into compounds of industrial and commercial importance. We are targeting homogeneous iridium catalysts supported by oxidatively robust ligands, which allow for the coupling of alkane C–H activation and aerobic functionalization.