The White group is an interdisciplinary team that applies principles grounded in electrochemistry to advance understanding of a wide variety of physical systems. Systems currently investigated within the group span the physical, analytical and biological sciences. These include nano-pore/pipette based sensing, measuring and delivery of nanoscale particles; protein ion channel electrical measurements of nucleic acids; theoretical and electrochemical scanned probe investigations of solid-state batteries; experimental measurements and theoretical analysis of ionic transport in confined geometries; and fundamental studies of electrochemically generated nanobubbles. See below for our latest publications, and the research section for more details on our research interests.
Latest Publications:
![Electrochemical Reduction of [Ni(Mebpy)3]2+. Elucidation of the Redox Mechanism by Cyclic Voltammetry and Steady-State Voltammetry in Low Ionic Strength Solutions.](/_images/faculty/white/tocs/NiMebpy3-low-ionic-Barman-2020.png)
Electrochemical Reduction of [Ni(Mebpy)3]2+. Elucidation of the Redox Mechanism by Cyclic Voltammetry and Steady-State Voltammetry in Low Ionic Strength Solutions.
Chem Rxiv. 2020.
Electrochemically Controlled Nucleation of Single CO2 Nanobubbles via Formate Oxidation at Pt Nanoelectrodes
H. Ren, M. A. Edwards, Y. Wang, H. S. White
J. Phys. Chem. Lett. 2020.11, 4, 1291-1296.
Coupled Electron- and Phase-Transfer Reactions at a Three-Phase Interface
C. K. Terry Weatherly, H. Ren, M. A. Edwards, L. Wang, H. S. White
J. Am. Chem. Soc.2019. 141, 45, 18091-18098
Coupled Electron- and Phase-Transfer Reactions at a Three-Phase Interface
C. K. Weatherly, H. Ren, M. A. Edwards, L. Wang, H. S. White
J. Am. Chem. Soc. 2019. DOI: 10.1021/jacs.9b07283
Electrochemical Synthesis of Individual Core@Shell and Hollow Ag/Ag2S Nanoparticles
D. A. Robinson, H. S. White
Nano Lett. 2019. 19, 8, 5612-5619.
Enhancing Lithium Insertion with Electrostatic Nanoconfinement in a Lithography Patterned Precision Cell
S. X. Li, N. S. Kim, K. McKelvey, C. Liu, H. S. White, G. W. Rubloff, S. B. Lee, M. A. Reed
ACS Nano. 2019. 13, 7, 8481-8489
Nanoscale Fluid Vortices and Nonlinear Electroosmotic Flow Drive Ion Current Rectification in the Presence of Concentration Gradients
J. Rabinowitz, M. A. Edwards, E. Whittier, K. Jayant, K. L. Shepard
J. Phys. Chem. A. 2019 DOI: 10.1021/acs.jpca.9b04075
A synthetic chemist's guide to electroanalytical tools for studying reaction mechanisms
C. Sandford, M. A. Edwards, K. J. Klunder, D. P. Hickey, M. Li, K. Barman, M. S. Sigman, H. S. White and S. D. Minteer
Chem. Sci., 2019, 10, 6404-6422.
Observing Transient Bipolar Electrochemical Coupling on Single Nanoparticles Translocating through a Nanopore
C. Han, R. Hao, Y. Fan, M. A. Edwards, H. Gao, and B. Zhang
Langmuir, 2019, 35, 22, 7180-7190
Electrochemically Driven, Ni-Catalyzed Aryl Amination: Scope, Mechanism, and Applications
Y. Kawamata, J. C. Vantourout, D. P. Hickey, P. Bai, L. Chen, Q. Hou, W. Qiao, K. Barman, M. A. Edwards, A. F. Garrido-Castro, J. N. deGruyter, H. Nakamura, K. W. Knouse, C. Qin, K. J. Clay, D. Bao, C. Li, J. T. Starr, C. Garcia-Irizarry, N. Sach, H. S. White, M. Neurock, S. D. Minteer, and P. S. Baran
J. Am. Chem. Soc., 2019, 141 (15), pp 6392–6402
Voltammetric Determination of the Stochastic Formation Rate and Geometry of Individual H2, N2, and O2 Bubble Nuclei
M. A. Edwards, H. S. White, H. Ren
ACS Nano.2019. 13, 6, 6330-6340
γ-Hemolysin Nanopore Is Sensitive to Guanine-to-Inosine Substitutions in Double-Stranded DNA at the Single-Molecule Level
Cherie S. Tan, Aaron M. Fleming , Hang Ren , Cynthia J. Burrows, and Henry S. White
J. Am. Chem. Soc., 2018, 140 (43), pp 14224–14234.
Nanoscale electrochemical kinetics & dynamics: the challenges and opportunities of single-entity measurements
Martin Edwards, Donald Robinson, Hang Ren, Cameron Cheyne, Cherie Tan, and Henry S. White.
Faraday Discuss., 2018, 210, 9-28.
Effects of Instrumental Filters on Electrochemical Measurement of Single‐Nanoparticle Collision Dynamics
Donald Robinson, Martin A. Edwards, Hang Ren, and Henry S. White
ChemElectroChem,2018, 5, 3059.
The Nucleation Rate of Single O2 Nanobubbles at Pt Nanoelectrodes
Álvaro Moreno Soto, Sean R. German, Hang Ren, Devaraj van der Meer, Detlef Lohse, Martin A. Edwards, and Henry S. White
Langmuir, 2018, 34 (25), pp 7309–7318.
Critical Nuclei Size, Rate, and Activation Energy of H2 Gas Nucleation
Sean R. German, Martin A. Edwards, Hang Ren, and Henry S. White
J. Am. Chem. Soc., 2018, 140 (11), pp 4047–4053.
Single-Molecule Titration in a Protein Nanoreactor Reveals the Protonation/Deprotonation Mechanism of a C:C Mismatch in DNA
Hang Ren, Cameron G. Cheyne, Aaron M. Fleming, Cythia J. Burrows, and Henry S. White
J. Am. Chem. Soc., 2018, 140, 15, 5153-5160.
Nanopore Opening at Flat and Nano-Tip Conical Electrodes during Vesicle Impact Electrochemical Cytometry
Xianchan Li, Lin Ren, Johan Dunevall, Daixin Ye, Henry S. White, Martin A. Edwards, and Andrew G. Ewing
ACS Nano, 2018, 12(3):3010-3019.
Nanopore Analysis of the 5-Guanidinohydantoin to Iminoallantoin Isomerization in Duplex DNA
Tao Zeng, Aaron M. Fleming, Yun Ding, Hang Ren, Henry S. White, Cynthia J. Burrows
J. Org. Chem., 2018, 83 (7), pp 3973–3978.
Single Ag Nanoparticle Collisions within a Dual-Electrode Micro-Gap Cell
Kim McKelvey, Donald A. Robinson, Nicholas J. Vitti, Martin A. Edwards, Henry S. White
Faraday Discuss., 2018, 210, 189-200.
Critical Nuclei Size, Rate, and Activation Energy of H2 Gas Nucleation
Sean R. German, Martin A. Edwards, Hang Ren, Henry S. White
J. Am. Chem. Soc., 2018, 140 (11), pp 4047–4053.
Selective increase in CO2 electroreduction activity at grain-boundary surface terminations
R. G. Mariano, K. McKelvey, H. S. White, M. W. Kanan
Science, 358 (2017) 1187-1192.
Exploring the suitability of different electrode materials for hypochlorite quantification at high concentration in alkaline solutions
R. E.P. Meyler, M. A. Edwards, J. V. Macpherson
Electrochemistry Communications, 86 (2018) 21-25.
Collision Dynamics During the Electrooxidation of Individual Silver Nanoparticles
D. A Robinson, Y. Liu, M. A. Edwards, N. J. Vitti, S. M. Oja, B. Zhang, H. S. White
J. Am. Chem. Soc., (2017) 139, 46, 16923-16931.
Redox Cycling in Nanogap Electrochemical Cells
H. S. White, K. McKelvey
Current Opinion in Electrochemistry, 2017, 7, 48-53.
Three-Dimensional Super-Resolution Imaging of Single Nanoparticles Delivered by Pipettes
Y. Yu, V. Sundaresan, S. Bandyopadhyay, Y. Zhang, M. A. Edwards, K. McKelvey, H. S.
White, K. A. Willets.
ACS Nano, 2017, 11 (10), pp 10529–10538.
Collision and Oxidation of Silver Nanoparticles on a Gold Nanoband Electrode
F. Zhang, M. Edwards, R. Hao, H. S. White, B. Zhang
J. Phys. Chem. C, 2017, 121 (42), pp 23564–23573.
Microscale 2.5D Batteries
K. McKelvey, A. A. Talin, B. Dunn, and H. S. White
Journal of The Electrochemical Society, 2017, 164(12), A2500-2503.
Nanopipettes as a Tool for Single Nanoparticle Electrochemistry
K. McKelvey, S. R. German, Y. Zhang, H. S. White, and M. A. Edwards
Current Opinion in Electrochemistry, 2017, 6(1), 4-9.
Electrochemical Generation of Individual O2 Nanobubbles via H2O2 Oxidation
Featured in Spotlights, a new initiative of The Journal of Physical Chemistry Letters designed to expand awareness for physical chemistry by presenting accessible plain-language summaries of select articles in each issue.
H. Ren, S. R. German, M. A. Edwards, Q. Chen, and H. S. White
Electrochemical Generation of Individual O2 Nanobubbles via H2O2 Oxidation
H. Ren, S. R. German, M. A. Edwards, Q. Chen, and H. S. White
J. Phys. Chem. Lett., 2017, 8, 2450-2454.
Interrogation of Base Pairing of the Spiroiminodihydantoin Diastereomers Using the α-Hemolysin Latch
Tao Zeng, Aaron M. Fleming, Yun Ding, Henry S. White, and Cynthia J. Burrows
Biochemistry, 2017, 56 (11), 1596–1603.
Dynamics of a DNA Mismatch Site Held in Confinement Discriminate Epigenetic Modifications of Cytosine
Robert P. Johnson, Aaron M. Fleming, Rukshan T. Perera, Cynthia J. Burrows, and Henry
S. White
J. Am. Chem. Soc., 2017, 139 (7), 2750–2756.
The dynamic steady state of an electrochemically generated nanobubble
Yuwen Liu, Martin A. Edwards, Sean R. German, Qianjin Chen, and Henry S. White
Langmuir, 2017, 33 (8), 1845–1853.
Observation of Multipeak Collision Behavior during the Electro-Oxidation of Single Ag Nanoparticles
Stephen M Oja, Donald A. Robinson, Nicholas J. Vitti, Martin A. Edwards, Yuwen Liu,
Henry S. White, and Bo Zhang
J. Am. Chem. Soc., 2017, 139 (2), 708–718.
Kinetics of T3-DNA Ligase-Catalyzed Phosphodiester Bond Formation Measured Using the α-Hemolysin Nanopore
Cherie S. Tan, Jan Riedl, Aaron M. Fleming, Cynthia J. Burrows, and Henry S. White
ACS Nano, 2016, 10 (12), 11127–11135.
Fabrication, Testing, and Simulation of All-Solid-State Three Dimensional Li-Ion Batteries
A. Alec Talin, Dmitry Ruzmetov, Andrei Kolmakov, Kim McKelvey, Nicholas Ware, Farid
El Gabaly, Bruce S. Dunn, and Henry S. White
ACS Appl. Mater. Interfaces, 2016, 8 (47), 32385–32391.
Voltage-Rectified Current and Fluid Flow in Conical Nanopores
Wen-Jie Lan, Martin A. Edwards, Long Luo, Rukshan T. Perera, Xiaojian Wu, Charles
R. Martin, and Henry S. White
Acc. Chem. Res., 2016, 49 (11), 2605–2613.
Laplace Pressure of Individual H2 Nanobubbles from Pressure–Addition Electrochemistry
Sean R. German, Martin A. Edwards, Qianjin Chen, and Henry S. White
Nano. Lett., 2016, 16 (10), 6691–6694.
Resistive Pulse Delivery of Single Nanoparticles to Electrochemical Interfaces
Kim McKelvey, Martin A. Edwards, and Henry S. White
J. Phys. Chem. Lett., 2016, 7, 3920–3924.
Redox Cycling in Nanogap Electrochemical Cells. The Role of Electrostatics in Determining
the Cell Response
Qianjin Chen, Kim McKelvey, Martin A. Edwards, and Henry S. White
J. Phys. Chem. C, 2016, 120 (31), 17251–17260.