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TITLE: Towards earth-abundant photoredox catalysts: Photoactive complexes of manganese
ABSTRACT: Over the past two decades, photoredox catalysis has become one of the key approaches to organic photochemistry, thanks to its versatility and the large number of transformations that it enables. Most photoredox catalysts, however, are complexes of iridium or ruthenium, which are rare and expensive transition metals. Manganese, on the other hand, is the third-most abundant transition metal on earth, cheap, non-toxic, and has several oxidation states available. As such, it is an attractive alternative to develop earth-abundant photoredox catalysts. Our work focuses on complexes of Mn(I) and Mn(II) with N-donor ligands. Herein, we report the syntheses of these compounds, describe their crystal structures, and use optical spectroscopy, electrochemistry, and computational modeling to interrogate their properties.
BIO: Daniela Arias-Rotondo (she/ella) was born and raised in Buenos Aires, Argentina and completed her undergraduate degree at Universidad de Buenos Aires. She then moved to the US and got her PhD working with Prof. Jim McCusker at Michigan State University, where she learned much about the photophysics of Ru(II) complexes. She travelled to the East Coast for a postdoc at Princeton University in Prof. Dave MacMillan’s group where she studied photoredox catalysis. Since the fall of 2020 she is an Assistant Professor at Kalamazoo College, where she is known to her students as Dr. DAR (rhymes with jar). The DAR lab works on the synthesis and characterization of manganese complexes that absorb visible light to access charge-separated excited states. Outside of the lab, Dr. DAR enjoys mystery novels, puzzles, and spending time with her cats.
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