MSE Colloquium: Mircea Dinca, MIT
Traditional applications of metal-organic frameworks (MOFs) are focused on gas storage and separation, which take advantage of the inherent porosity and high surface area of these materials. The MOFs’ use in technologies that require charge transport have lagged behind, however, because MOFs are poor conductors of electricity. We show that design principles honed from decades of previous research in molecular conductors can be employed to produce MOFs with remarkable charge mobility values rivaling or indeed surpassing those of common organic semiconductors. We expect that such high surface area, ordered, and crystalline conductors will be used for a variety of applications in thermoelectrics, rechargeable battery technologies, electrocatalysis, or even new types of photovoltaics. Another virtually untapped area of MOF chemistry is related to their potential to mediate redox catalysis. We show that MOFs can be thought of as unique weak-field ligands that give rise to unusual molecular coordination environments where small molecule species can be isolated in a matrix-like environment, akin to the metal binding pockets of metalloproteins, for instance. By employing a mild synthetic method and suite of spectroscopic techniques, we have undertaken forays into the redox chemistry of the MOFs’ metal noes, an exciting area for new small molecule chemistry.
Date: Friday, October 25th 2013
Start Time: 3:00pm
End Time: 4:00pm
Location: 8 St. Mary’s Street, Room 901
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