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Dr. Eckenhoff is a synthetic inorganic chemist specializing in the synthesis of copper, iron, cobalt, nickel and molybdenum complexes.  Research in Dr. Eckenhoff’s lab has two main projects underway. The first project investigates the design, synthesis, and testing of nickel and cobalt complexes as catalysts for hydrogen production in artificial photosynthesis.  A clean and inexpensive method of producing hydrogen gas is vital for the creation of a future hydrogen economy.  The second project looks at a group of Molybdenum complexes which exhibit a stunning and previous unknown solvatochromic effect, or color-change in different solvents.  These compounds have potential applications in sensor technology and also enhance our understanding of polarity.  For more information on Dr. Eckenhoff’s research, visit .

PUBLICATIONS

Helland, S.D., Chang, A.S., Lee, K.W., Hutchison, P.S., Brennessel, W.W., Eckenhoff, W.T. Synthesis and Characterization of Strongly Solvatochromic Molybdenum(III) Complexes. Inorg. Chem. 2020, 59, 705-716.

Charles, R.M.III;Tupkar, H.; Helland, S.D.; Mercado, A.; Eckenhoff, W.T.; Schley, N.D.; DeYonker, N.J.; Brewster, T.P. Synthesis and Electronic Characterization of Iridium-Aluminum and Rhodium-Aluminum Heterobimetallic Complexes Bridged by 3-Hydroxypyridine and 4-Hydroxypyridine. Eur. J. Inorg. Chem. 2020, 1192-1198.

Chang, A.S.; Pintauer, T.; Basu, P.; Eckenhoff, W.T. Structural and Electronic Investigation of Tetrachalcogenidomolybdate Dianions. ChemistrySelect. 2018, 3(21), 5808-5813.

Brewster, T.P.; Nguyen, T.H.; Li, Z.; Eckenhoff, W.T.; Schley, N.D.; DeYonker, N.J.; Synthesis and Characterization of Heterobimetallic Iridium-Aluminum and Rhodium-Aluminum Complexes. Inorg. Chem. 2018, 57(3), 1148-1157.

Dewar, J. C.; Thakur, A. S.; Brennessel, W. W.; Cafiero, M.L.; Peterson, L.P.; Eckenhoff, W.T. Simple Zinc Complex to Model Substrate Binding to Zinc Enzymes. Inorg. Chim. Acta, 2018, 473, 15-19.

Eckenhoff, W.T. Molecular Catalysts of Co, Ni, Fe, and Mo for Hydrogen Generation in Artificial Photosynthetic Systems. Coord. Chem. Rev., 2017, 373, 295-316.

Eckenhoff, W. T.; Brennessel, W.W.; Eisenberg, R. Light Driven Hydrogen Production from Aqueous Protons using Molybdenum Catalysts.  Inorg. Chem. 2014, 53(18), 9860-9869.

Sabatini, R.; Eckenhoff, W.; Orchard, A.; Liwosz, K.R.; Waton, D.F.; Detty, M.R.; McCamant, D.W.; Eisenberg, R. From Seconds to Femtoseconds: Solar Hydrogen Production and Transient Absorption of Chalcogenorhodamine Dyes. J. Am. Chem. Soc. 2014. 136 (21), 7740-7750. 

Eckenhoff, W. T.; McNamara, W. R.; Du, P.; Eisenberg, R. Cobalt Complexes as Artificial Hydrogenases for the Reductive Side of Water Splitting. Biochim. Biophys. Acta., Bioenerg. 2013. 1827(8-9), 958-973. 

Eckenhoff, W.T.; Biernesser, A. B.; Pintauer, T. Kinetic and Mechanistic Aspects of Atom Transfer Radical Addition (ATRA) Catalyzed by Copper Complexes with Tris(2-pyridylmethyl)amine. Inorg. Chem. 2012. 51(21), 11917-11929.

Eckenhoff, W.T.; Eisenberg, R. Molecular systems for light driven hydrogen production. Dalton Trans. 2012. 41(42),13004-13021. 

Eckenhoff, W.T.; Biernesser, A.B.; Pintauer, T. Structural Characterization and Investigation of Iron(III) Complexes with Nitrogen and Phosphorus Based Ligands in Atom Transfer Radical Addition (ATRA). Inorg. Chim. Acta 2012. 382(1), 84-95. 

Qian, H.; Eckenhoff, W.T.; Bier, M.E.; Pintauer, T.; Jin, R. Crystal Structures of Au2 Complex and Au25 Nanocluster and Mechanistic Insight into the Conversion of Polydisperse Nanoparticles into Monodisperse Au25 Nanoclusters. Inorg. Chem. 2011. 50(21), 10735-10739. 

Eckenhoff, W.T.; Pintauer, T. Atom Transfer Radical Addition (ATRA) Mediated by Copper Complexes with the Tris(2-dimethylaminoethyl)amine (Me6TREN) Ligand in the Presence of AIBN as a Reducing Agent. Dalton Trans. 2011. 40(18), 4909-4917. 

Taylor, M.J.W.; Eckenhoff, W.T.; Pintauer, T. Copper Catalyzed Atom Transfer Radical Addition (ATRA) and Cyclization (ATRC) Reactions in the Presence of Environmentally Benign Ascorbic Acid as a Reducing Agent. Dalton Trans. 2010, 39(47), 11475-11482. 

Eckenhoff, W.; Pintauer, T. Structural Comparison of Copper(I) and Copper(II) Complexes with Tris(2-pyridylmethyl)amine Ligand in Atom Transfer Radical Addition. Inorg. Chem. 2010, 49(22), 10617-10626. 

Qian, H.; Eckenhoff, W.T.; Zhu, Y.; Pintauer, T.; and Jin, R. Total Structure Determination of a Thiolate-Protected Au38Nanoparticles. J. Am. Chem. Soc. 2010, 132(24), 8280-8281. 

Eckenhoff, W.T.; Pintauer, T. Copper Catalyzed Atom Transfer Radical Addition (ATRA) and Cyclization (ATRC) Reactions in the Presence of Reducing Agents Cat. Rev.- Sci. Eng. 2010, 51, 1-59. 

Pintauer, T.; Eckenhoff, W.T.; Ricardo, C.; Balili, M.; Biernesser, A.B.; Noonan, S.J.; Taylor, M.J.W. Highly Efficient Ambient-Temperature Copper-Catalyzed Atom-Transfer Radical Addition (ATRA) in the Presence of Free-Radical Initiator (V-70) as a Reducing Agent. Chem. Eur. J. 2009, 15(1), 38-41.

Cohen, N.A.; Tillman, E.S.; Thakur, S.; Smith, J.R.; Eckenhoff, W.T.; Pintauer, T. Effect of the ligand in atom transfer radical polymerization reactions initiated by photodimers of 9-bromoanthracene. Macromol. Chem. Phys. 2009, 210(3-4), 263-268. 

Eckenhoff, W.T.; Garrity, S.T.; Pintauer, T. Highly Efficient Copper-Mediated Atom Transfer Radical Addition (ATRA) in the Presence of Reducing Agent. Eur. J. Inorg. Chem. 2008, 4, 563-571. 

Zhu, M.; Eckenhoff, W.T.; Pintauer, T.; Jin, R. Conversion of Anionic [Au25(SCH2CH2Ph)18]- Cluster to Charge Neutral Cluster via Air Oxidation. J. Phys. Chem. Sect. C 2008, 112(37), 14221-14224. 

Eckenhoff, W.T.; Pintauer, T. Atom Transfer Radical Addition in the Presence of Catalytic Amounts of Copper(I/II) Complexes with Tris(2-pyridylmethyl)amine. Inorg. Chem. 2007, 46(15), 5844-5846. 

Eckenhoff, W.T.; Pintauer, T. Bis(2,9-dimethyl-1,10-phenanthroline)copper(I) Tetraphenylborate Dichloromethane Solvate. Acta Cryst. Sect. E. 2007, E63(3) m800-m802.