Publications

2018
Brian J.-F. Wong, Michael G. Hill, Dmitry E. Protsenko, and Bryan M. Hunter. 2018. “Potential Driven Electrochemical Modification of Tissue.” United States of America 9877770 (US Patent and Trademark Office).
Bryan M. Hunter, Niklas B. Thompson, Astrid M. Müller, George R. Rossman, Michael G. Hill, Jay R. Winkler, and Harry B. Gray. 2018. “Trapping an Iron(VI) Water-Splitting Intermediate in Nonaqueous Media.” Joule, 2, 4, Pp. 747 - 763. Publisher's Version
Bryan M. Hunter, Jay R. Winkler, and Harry B. Gray. 2018. “Iron Is the Active Site in Nickel/Iron Water Oxidation Electrocatalysts.” Molecules, 23, 4, Pp. 903. Publisher's VersionAbstract
Efficient catalysis of the oxygen-evolution half-reaction (OER) is a pivotal requirement for the development of practical solar-driven water splitting devices. Heterogeneous OER electrocatalysts containing first-row transition metal oxides and hydroxides have attracted considerable recent interest, owing in part to the high abundance and low cost of starting materials. Among the best performing OER electrocatalysts are mixed Fe/Ni layered double hydroxides (LDH). A review of the available experimental data leads to the conclusion that iron is the active site for [NiFe]-LDH-catalyzed alkaline water oxidation.
2017
Stanislav Záliš, Bryan M. Hunter, Harry B. Gray, and Antonín Vlček. 2017. “Electronic Structures of Reduced and Superreduced Ir2(1,8-diisocyanomenthane)4n+ Complexes.” Inorganic Chemistry, 56, 5, Pp. 2874-2883. Publisher's Version
Martin Pižl, Bryan M. Hunter, Gregory M. Greetham, Michael Towrie, Stanislav Záliš, Harry B. Gray, and Antonín Vlček. 2017. “Ultrafast Wiggling and Jiggling: Ir2(1,8-diisocyanomenthane)42+.” The Journal of Physical Chemistry A, 121, 48, Pp. 9275-9283. Publisher's Version
2016
Bryan M. Hunter, Harry B. Gray, and Astrid M. Müller. 2016. “Earth-Abundant Heterogeneous Water Oxidation Catalysts.” Chemical Reviews, 116, 22, Pp. 14120-14136. Publisher's Version
Bryan M. Hunter, Wolfgang Hieringer, Jay R. Winkler, Harry B. Gray, and Astrid M. Müller. 2016. “Effect of Interlayer Anions on [NiFe]-LDH Nanosheet Water Oxidation Activity.” Energy & Environmental Science, 9, Pp. 1734-1743. Publisher's Version
Tania V. Darnton, Bryan M. Hunter, Michael G. Hill, Stanislav Záliš, Antonín Vlček, and Harry B. Gray. 2016. “Reduced and Superreduced Diplatinum Complexes.” Journal of the American Chemical Society, 138, 17, Pp. 5699-5705. Publisher's Version
Marco S. Messina, Jonathan C. Axtell, Yiqun Wang, Paul Chong, Alex I. Wixtrom, Kent O. Kirlikovali, Brianna M. Upton, Bryan M. Hunter, Oliver S. Shafaat, Saeed I. Khan, Jay R. Winkler, Harry B. Gray, Anastassia N. Alexandrova, Heather D. Maynard, and Alexander M. Spokoyny. 2016. “Visible-Light-Induced Olefin Activation Using 3D Aromatic Boron-Rich Cluster Photooxidants.” Journal of the American Chemical Society, 138, 22, Pp. 6952-6955. Publisher's Version
Bryan M. Hunter, Jeremy Kallick, Jessica Kissel, Maya Herzig, Cyrus Manuel, Dmitri Protsenko, Brian J. F. Wong, and Michael G. Hill. 2016. “Controlled-Potential Electromechanical Reshaping of Cartilage.” Angewandte Chemie International Edition, 55, 18, Pp. 5497-5500. Publisher's VersionAbstract
Abstract An alternative to conventional “cut-and-sew” cartilage surgery, electromechanical reshaping (EMR) is a molecular-based modality in which an array of needle electrodes is inserted into cartilage held under mechanical deformation by a jig. Brief (ca. 2 min) application of an electrochemical potential at the water-oxidation limit results in permanent reshaping of the specimen. Highly sulfated glycosaminoglycans within the cartilage matrix provide structural rigidity to the tissue through extensive ionic-bonding networks; this matrix is highly permselective for cations. Our studies indicate that EMR results from electrochemical generation of localized, low-pH gradients within the tissue: fixed negative charges in the proteoglycan matrix are protonated, resulting in chemically induced stress relaxation of the tissue. Re-equilibration to physiological pH restores the fixed negative charges, and yields remodeled cartilage that retains a new shape approximated by the geometry of the reshaping jig.
2015
Timothy S. Sinclair, Bryan M. Hunter, Jay R. Winkler, Harry B. Gray, and Astrid M. Müller. 2015. “Factors affecting bismuth vanadate photoelectrochemical performance.” Materials Horizons, 2, Pp. 330-337. Publisher's VersionAbstract
Bismuth vanadate is a promising photoanode material, but recent reports on undoped BiVO4 without sublayers and co-catalysts showed large variations in photocurrent generation. We addressed this issue by correlating photoelectrochemical performance with physical properties. We devised a novel anodic electrodeposition procedure with iodide added to the aqueous plating bath, which allowed us to prepare BiVO4 photoanodes with virtually identical thicknesses but different morphologies, and we could control surface Bi content. Morphologies were quantified from SEM images as distributions of crystallite areas and aspect-ratio-normalised diameters, and their statistical moments were derived. We could obtain clear photocurrent generation trends only from bivariate data analysis. Our experimental evidence suggests that a combination of low Bi/V ratio, small aspect-ratio-normalised diameters, and crystallites sizes that were small enough to provide efficient charge separation yet sufficiently large to prevent mass transport limitations led to highest photoelectrochemical performance.
2014
Bryan M. Hunter, James D. Blakemore, Mark Deimund, Harry B. Gray, Jay R. Winkler, and Astrid M. Müller. 2014. “Highly Active Mixed-Metal Nanosheet Water Oxidation Catalysts Made by Pulsed-Laser Ablation in Liquids.” Journal of the American Chemical Society, 136, 38, Pp. 13118-13121. Publisher's Version
James D. Blakemore, Emilia S. Hernandez, Wesley Sattler, Bryan M. Hunter, Lawrence M. Henling, Bruce S. Brunschwig, and Harry B. Gray. 2014. “Pentamethylcyclopentadienyl rhodium complexes.” Polyhedron, 84, Pp. 14 - 18. Publisher's Version
2012
Bryan M. Hunter, Randy M. Villahermosa, Christopher L. Exstrom, Michael G. Hill, Kent R. Mann, and Harry B. Gray. 2012. “M–M Bond-Stretching Energy Landscapes for M2(dimen)42+ (M = Rh, Ir; dimen = 1,8-Diisocyanomenthane) Complexes.” Inorganic Chemistry, 51, 12, Pp. 6898-6905. Publisher's Version
2011
Clairisse van der Felt, Kevork Hindoyan, Kang Choi, Nazafarin Javdan, Peter Goldman, Rose Bustos, Andrew G. Star, Bryan M. Hunter, Michael G. Hill, Aram Nersissian, and Andrew K. Udit. 2011. “Electron-transfer rates govern product distribution in electrochemically-driven P450-catalyzed dioxygen reduction.” Journal of Inorganic Biochemistry, 105, 10, Pp. 1350 - 1353. Publisher's Version
2008
Nobuhito Iguchi, Clyde Cady, Robert C. Snoeberger III, Bryan M. Hunter, Eduardo M. Sproviero, Charles A. Schmuttenmaer, Robert H. Crabtree, Gary W. Brudvig, and Victor S. Batista. 2008. “Characterization of Siloxane Adsorbates Covalently Attached to TiO2.” Proceedings of SPIE, 7034, Pp. 70340C-1. Publisher's Version