Contact InformationOffice: WEL 4.420
Michael J. Rosemrose@cm.utexas.edu
Assistant Professor, Faculty
BS, University of California Davis, 2000
Roche Biosciences, 2000-2002
PhD, University of California Santa Cruz, 2009
Postdoctoral Studies, California Institute of Technology, 2009-2012
Chancellor's Dissertation Award, 2008
CCI Solar Postdoctoral Scholar, 2009-2010
NSF ACC-F Postdoctoral Fellow, 2010-2012
Research in the Rose Group investigates the role of inexpensive, earth abundant metals (mainly Mn, Fe, Co, Ni, Cu) in providing a catalytic platform for chemical transformations broadly relating to energy and fuel generation. The group focuses on novel synthetic targets in inorganic chemistry, as well as the preparation and characterization of electrode/catalyst hybrid materials.
Research in the Rose Group is broadly divided along three lines of investigation:
1) Biomimetics: Over the course of 2 billion years, nature has developed finely tuned enzyme catalytic sites to activate many small molecules of interest to the energy community. Such molecules include dihydrogen (H2), methane (CH4), carbon dioxide (CO2). The Rose Group prepares synthetic active site mimics of these enzymes to model their structure and function. Techniques of interest include molecular synthesis, crystallography, and inorganic spectroscopy (EPR, UV/vis, FTIR).
2) Inverse Hard/Soft Interactions: High molecular weight metals in the late transition series are extremely rare in the earth's crust, and are therefore very expensive. These precious metals, however, make excellent catalytic centers for many catalytic transformations relevant to the world's current energy paradigm. Precious metals provide reliable (yet costly) entry to reactions such as H2 generation (Pt), CH4 activation (Rh, Au) and CO2 reduction (Re). In contrast, heavy main group V and VI elements are relatively abundant, and are in fact undesirable side products of industrial copper mining and H2SO4 generation.
Our group seeks to capitalize on some special properties of these under-utilized heavy-atom donors in conjunction with late, first-row transition metals (Mn, Fe, Co, Ni, Cu). Techniques of interest include molecular synthesis, crystallography, and inorganic spectroscopy (EPR, UV/vis/NIR, SQUID, and NMR).
3) Photoelectrode/Catalyst Hybrids: The study of using sunlight to generate chemical fuels has been termed "Solar Fuels". Within this paradigm, it is desirable to directly couple molecular catalysts to light-absorbing materials. Generating a stable photoelectrode/catalyst system involves developing solutions to fundamental problems in surface passivation, bond-breaking/making at the semiconductor surface, electron transfer and covalent catalyst attachment. Techniques of interest are molecular synthesis, cross-coupling reactions, X-ray photoelectron spectroscopy, atomic layer deposition, and photoelectrochemistry.
1) O'Leary, L. E.; Rose, M. J.; Ding. T. X.; Johansson, E.; Brunschwig, B. S.; Lewis, N. S. "Heck Couplings of Small Molecules to Mixed Methyl/Thienyl Monolayers at Low Defect Density Si(111)." J. Am. Chem. Soc. 2013, 135, 10081.
2) Rose, M. J.; Gray, H. B.; Winkler, J. R. "Hydrogen Generation Catalyzed by Fluorinated Diglyoxime-Iron Complexes at Low Overpotentials." J. Am. Chem. Soc. 2012, 134, 8310.
3) Rose, M. J.; Betterley, N. M.; Oliver, A. G.; Mascharak, P. K. "Binding of Nitric Oxide to a Synthetic Model of Iron-Containing Nitrile Hydratase (Fe-NHase) and its Photorelease: Relevance to Photoregulation of Fe-NHase by NO." Inorg. Chem. 2010, 49, 1854.
4) Rose, M. J.; Betterley, N. M.; Mascharak, P. K. "Thiolate S-Oxygenation Controls Nitric Oxide (NO) Photolability of a Synthetic Iron Nitrile Hydratase (Fe-NHase) Model Derived from Mixed Carboxamide/Thiolate Ligand." J. Am. Chem. Soc. 2009, 131, 8340.
5) Rose, M. J.; Mascharak, P. K. "Photosensitization of Ruthenium Nitrosyls to Red Light with an Isoelectronic Series of Heavy Atom Chromophores: Experimental and Density Functional Theory Studies on the Effects of O-, S- and Se-substituted Coordinated Dyes." Inorg. Chem. 2009, 48, 6904.
6) Rose, M. J.; Fry, N. F.; Marlow, R.; Hinck, L.; Mascharak, P. K. "Sensitization of Ruthenium Nitrosyls to Visible Light via Direct Coordination of the Dye Resorufin: Trackable NO Donors for Light-Triggered NO Delivery to Cellular Targets." J. Am. Chem. Soc. 2008, 130, 8834.