Machan Research Group

Inorganic chemistry focused on catalysis related to energy, electrochemistry, spectroelectrochemistry, and materials chemistry

Publications

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Research @ UVA

12. Secondary-Sphere Effects in Molecular Electrocatalytic CO2 Reduction

Nichols, A.W.; Machan, C.W.* Frontiers in Chemistry - Inorganic Chemistry 2019 DOI: 10.3389/fchem.2019.00397

11. Electrocatalytic Reduction of Oxygen by Mn(III) meso-Tetra(N-methylpyridinium-4-yl)porphyrin in Universal Buffer

Lieske, L.E.; Hooe, S.L.; Nichols, A.W.; Machan, Charles W.* Dalton Transactions 2019 DOI: 10.1039/C9DT01436E

10. Metal-Organic Frameworks as Porous Templates for Enhanced Cobalt Oxide Electrocatalyst Performance 

Huelsenbeck, L.; Hooe, S.L.; Ghorbanpour, A.; Conley, A.M.; Heinrich, H.; Machan, Charles W.*; Giri, G.* ACS Applied Energy Materials 2019 DOI: 10.1021/acsaem.9b00127

9. A Look at Periodic Trends in d-Block Molecular Electrocatalysts for CO2 Reduction

Jiang, C.; Nichols, A.W.; Machan, Charles W.* Dalton Transactions 2019 DOI: 10.1039/C9DT00491B

8. Recent Advances in Spectroelectrochemistry Related to Molecular Catalytic Processes

Machan, C.W.* Current Opinion in Electrochemistry 2019 DOI: 10.10.1016/j.coelec.2019.03.010

7. Metal-Free Electrochemical Reduction of Carbon Dioxide Mediated by Cyclic(Alkyl)(Amino) Carbenes

Lieske, L.E.†; Freeman, L.A.†; Wang, G.; Dickie, D.A.; Gilliard Jr., R.J.*; Machan, C.W. * Chemistry – A European Journal 2019 DOI: 10.1002/chem.201900316

6. Dioxygen Reduction to Hydrogen Peroxide by a Molecular Mn Complex: Mechanistic Divergence Between Homogeneous and Heterogeneous Reductants

Hooe, S.L. and Machan, C.W. Journal of the American Chemical Society 2019 DOI: 10.1021/jacs.8b13373

5. Nitric oxide activation facilitated by cooperative multimetallic electron transfer within an iron-functionalized polyoxovanadate–alkoxide cluster​

Li, F.; Meyer, R.L.; Carpenter, S.H.; VanGelder, L.E.; Nichols, A.W.; Machan, C.W.; Neidig, M.L.; Matson, E.M.* Chemical Science 2018 DOI: 10.1039/C8SC00987B 

4. Electrochemical Reduction of Carbon Dioxide with a Molecular Polypyridyl Nickel Complex

Lieske, L.E.; Rheingold, A.L.; Machan, C.W. Sustainable Energy & Fuels 2018 DOI: 10.1039/C8SE00027A

3. Reversible Modulation of the Redox Characteristics of Acid-Sensitive Molybdenum and Tungsten Scorpionate Complexes

Heyer, A.J.; Shivokevich, P.J.; Hooe, S.L.; Welch, K.D.; Harman, W.D.; Machan, C.W. Dalton Transactions2018 DOI:10.1039/C8DT00598B

2. Electrocatalytic Reduction of CO2 to Formate by an Iron Schiff Base Complex

Nichols, A.W.; Chatterjee, S.; Sabat, M.; Machan, C.W. Inorg. Chem. 2018, DOI: 10.1021/acs.inorgchem.7b02955

1. Electrocatalytic Reduction of Dioxygen to Hydrogen Peroxide by a Molecular Manganese Complex with a Bipyridine-Containing Schiff Base Ligand

Hooe, S.L.; Rheingold, A.L.; Machan, C.W. J. Am. Chem. Soc. 2018, DOI: 10.1021/jacs.7b09027

Postdoctoral Research

17. Charged Macromolecular Rhenium Bipyridine Catalysts with Tunable CO2 Reduction Potentials

16. Concerted One-Electron Two-Proton Transfer Processes in Models Inspired by the Tyr-His Couple of Photosystem II

15. Bio-inspired CO2 reduction by a rhenium tricarbonyl bipyridine-based catalyst appended to amino acids and peptidic platforms: incorporating proton relays and hydrogen-bonding functional groups

14. Electrocatalytic Reduction of Carbon Dioxide with Mn(terpyridine) Carbonyl Complexes

13. Interrogating Heterobimetallic Co-Catalytic Responses for the Electrocatalytic Reduction of CO2 Using Supramolecular Assembly

12. Improving the Efficiency and Activity of Electrocatalysts for the Reduction of CO2 Through Supramolecular Assembly with Amino Acid-Modified Ligands

11. Re(I) NHC Complexes for Electrocatalytic Conversion of CO2

10. Photocatalytic Reduction of Carbon Dioxide to CO and HCO2H Using fac-Mn(CN)(bpy)(CO)3

9. Rapid synthesis of redox-active dodecaborane B12(OR)12 clusters under ambient conditions

8. Orientation of Immobilized Cyano-Substituted Bipyridine Re(I) fac-Tricarbonyl Electrocatalysts on Au Surfaces

7. Electrocatalytic Reduction of Carbon Dioxide by Mn(CN)(2,2ʹ-bipyridine(CO)3: CN Coordination Alters Mechanism

6. Reductive Disproportionation of Carbon Dioxide by an Alkyl-Functionalized Pyridine Monoimine Re(I) fac-tricarbonyl Electrocatalyst

5. A Molecular Ruthenium Electrocatalyst for the Reduction of Carbon Dioxide to CO and Formate

4. Synthesis, Spectroscopy, and Electrochemistry of (α-diimine)M(CO)3Br, M = Mn, Re, Complexes: Ligands Isoelectronic to Bipyridyl Show Differences in CO2 Reduction

3. Supramolecular Assembly Promotes the Electrocatalytic Reduction of Carbon Dioxide by Re(I) Bipyridine Catalysts at a Lower Overpotential

2. Combined Steric and Electronic Effects of Positional Substitution on Dimethyl-Bipyridine Rhenium(I) Tricarbonyl Electrocatalysts for the Reduction of CO<sub>2</sub>

1. Developing a Mechanistic Understanding of Molecular Electrocatalysts for CO2 Reduction Using Infrared Spectroelectrochemistry

Graduate Research

7. General Strategy for the Synthesis of Rigid Higher-Order Platinum(II) Complexes via the Weak-Link Approach: Tweezers, Triple-Layers and Macrocycles

6. One-Pot Synthesis of an Fe(II) Bisterpyridine Complex with Allosterically Regulated Electronic Properties

5. Crystallographic Snapshots of the Bond-Breaking Isomerization Reactions of Ni(II) Complexes with Hemilabile Ligands

4. A Coordination Chemistry Dichotomy for Icosahedral Carborane-Based Ligands

3. Plasticity of the Nickel (II) Coordination Environment in Complexes with Hemilabile Phosphino Thioether Ligands

2. Chelating Effect as a Driving Force for the Selective Formation of Heteroligated Pt(II) Complexes with Bidentate Phosphino-Chalcoether Ligands

1. Electronic Tuning of Nickel-Based Bis(dicarbollide) Redox Shutles in Dye-Sensitized Solar Cells