The Whitmire research group studies inorganic and organometallic compounds for their use as precursors in solid-state compounds in order to produce phase pure materials that are difficult or impossible to prepare by other methods. Of particular interest are the metal pnictides, which have superior magnetic, magneto-optical, magnetoresistive and magnetocaloric properties and for which a wide range of transition metal-pnictide ratios are observed, making some of them difficult to prepare as thin films in pure form by conventional methods. They have also been found to catalyze a wide range of important industrial processes including the splitting of water into hydrogen and oxygen. Efforts focus on preparing volatile metal carbonyl cluster compounds for which the transition metal-pnictide ratio can be precisely controlled to match that of the desired target material. Isostructural compounds have been shown to serve effectively as dopants in order to tune the properties of the resultant materials. This methodology produces films under very mild conditions making it possible to coat a wide range of substrates including semiconductors, which has significant applications for harvesting solar energy to promote catalytic reactions.
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