quetzyRodríguez - López Laboratory

Research Articles

From our work in UIUC

55 Baran, M.J.; Braten, M.N.; Montoto, E.C.; Gossage, Z.T.; Ma, L.; Chenard, E.; Moore, J.S.; Rodríguez-López, J.; Helms, B.A. Designing Redox-Active Oligomers for Crossover-Free, NonAqueous Redox-Flow Batteries with High Volumetric Energy Density Chem. Mater. 2018, Just Accepted.

Size-exclusion flow batteries by design. A great collaborative work!

54 Schorr, N.B.; Jiang, A.G.; Rodríguez-López, J. Probing Graphene Interfacial Reactivity via Simultaneous and Co-Localized Raman-SECM Imaging and Interrogation
Anal. Chem. 2018, Just Accepted.

SECM, Raman, and the pursuit of multimodal single site analysis

53 Montoto, E.C.; Cao, Y.; Hernandez-Burgos, K.; Sevov, C.S.; Braten, M.N.; Helms, B.A.; Moore, J.S.; Rodríguez-López, J. Effect of the Backbone Tether on the Electrochemical Properties of Soluble Cyclopropenium Redox-Active Polymers
Macromolecules 2018, ASAP

For redox stability of polymers, every carbon counts!

52 Schorr, N.B.; Gossage, Z.T.; Rodríguez-López, J. Prospects for Single-Site Interrogation using In Situ Multimodal Electrochemical Scanning Probe Techniques
Curr. Opin. Electrochem. 2018, In Press.

Use all the techniques! At once! Wao such review!

51 Hui, J.; Pakhira, S.; Bhargava, R.; Barton, Z. J.; Zhou, X.; Chinderle, A. J.; Mendoza-Cortes, J. L.; Rodríguez-López, J. Modulating Electrocatalysis on Graphene Heterostructures: Physically Impermeable yet Electronically Transparent Electrodes.
ACS Nano 2018, 12(3), 2980-2990.

Electocatalytic coupling across graphene interface

50 Krumov, M. R; Simpson, B. H.; Counihan, M. J.; Rodríguez-López, J.In Situ Quantification of Surface Intermediates and Correlation to Discharge Products on Hematite Photoanodes using a Combined Scanning Electrochemical Microscopy Approach.
Anal. Chem. 2018, 90(5), 3050-3057.

Detecting key intermediates the SECM way during water oxidation on Hematite, a prospect solar photoanode

49 Burgess, M.; Hernandez-Burgos, K.; Schuh, J. K.; Davila, J.; Montoto, E. C.; Ewoldt, R. H.; Rodríguez-López, J. Modulation of the Electrochemical Reactivity of Solubilized Redox Active Polymers via Polyelectrolyte Dynamics.
J. Am. Chem. Soc. 2018, 140(6), 2093-2104.

Polyelectrolyte dynamics meet soluble redox-polymers!

48 Kromer, M. L.; Monzo, J.; Lawrence, M.; Kolodziej, A.; Gossage, Z. T.; Simpson, B. H.; Morandi, S.; Yanson, A.; Rodríguez-López, J.; Rodríguez, P. High Throughput Preparation of Metal Oxide Nanocrystals by Cathodic Corrosion and Their Use as Active Photocatalysts.
Langmuir. 2017, 33(46), 13295-13302.

Easy way to make photocatalyst nanoparticles. Just add water and an AC waveform!

47 Hernandez-Burgos, K.; Barton, Z. J.; Rodríguez-López, J. Finding Harmony between Ions and Electrons: New Tools and Concepts for Emerging Energy Storage Materials.
Chem. Mater. 2017, 29(21), 8918-8931.

Electrons, Ions, Action! Such Perspective, wow.

Cover art for the Chemistry of Material Vol 29, Issue 21. Represented in the cover for this issue is the opening for Brahms Opus 90 (Symphony No. 3) played through redox polymers, particles, and ions, which serve as notes that highlight our interest in energy storage.

46 Iyer, V. A.; Schuh, J. K.; Montoto, E. C.; Pavan Nemani, V.; Qian, S.; Nagarjuna, G.; Rodríguez-López; Ewoldt, R. H.; Smith, K. C., Assessing the Impact of Electrolyte Conductivity and Viscosity on the Reactor Cost and Pressure Drop of Redox-Active Polymer Flow Batteries.
J. Power Sources 2017, 361, 334-344.

Applying experimental conditions to techno-economic modeling

45 Gossage, Z.T.; Schorr, N.B.; Hernandez-Burgos, K.; Hui, J.; Simpson, B.H.; Montoto, E.C.; Rodríguez-López, J. Interrogating Charge Storage on Redox Active Colloids via Combined Raman Spectroscopy and Scanning Electrochemical Microscopy
Langmuir 2017, 33(37), 9455-9463.

SECM or Raman: why not both?

Cover art for the Langmuir special issue Fundamental Interfacial Science for Energy Applications.

44 Montoto, E.C.; Nagarjuna, G.; Moore, J.S.; Rodríguez-López, J. Redox Active Polymers for Non-Aqueous Redox Flow Batteries: Validation of a Size-Exclusion Approach
J. Electrochem. Soc. 2017, 164(7), A1688-A1694.

Preventing crossover in porous separators by size-excluding polymers

43 Barton, Z. J.; Hui, J.; Schorr, N. B.; Rodríguez-López, J. Detecting Potassium Ion Gradients at a Model Graphitic Interface.
Electrochim. Acta, 2017, 241, 98-105.

Isolating Flux of Potassium Ions from Total Substrate Activity

42 Barton, Z. J.; Rodríguez-López, J. Fabrication and Demonstration of Mercury Disc-Well Probes for Stripping-Based Cyclic Voltammetry Scanning Electrochemical Microscopy (CV-SECM).
Anal. Chem., 2017, 89, 2716-2723.

Stripping-Based Ionic Imaging with Hg Disc-Well SECM Probes

41 Barton, Z. J.; Rodríguez-López, J. Cyclic Voltammetry Probe Approach Curves (CV-PACs) with Alkali Amalgams at Mercury Sphere-Cap Scanning Electrochemical Microscopy (SECM) Probes.
Anal. Chem., 2017, 89, 2708-2715.

Theory and Guidelines for Stripping-Based CV-SECM

40 Burgess, M.; Chenard, E.; Hernandez-Burgos, K.; Gavvalapalli, N.; Assary, R.S.; Hui, J.; Moore, J.S.; Rodríguez-López, J. Impact of Backbone Tether Length and Structure on the Electrochemical Performance of Viologen Redox Active Polymers
Chem. Mater., 2016, 28, 7362-7374.
-This publication was highlighted in the ACS Energy Editorial
"Redox Flow Batteries"

Exploring Structure Chemical Interactions for Second Generation Polymers

39 Burgess, M.; Moore, J.S.; Rodríguez-López, J. Redox Active Polymers as Soluble Nanomaterials for Energy Storage. Acc. Chem. Res., 2016, 49 (11), 2649-2657.

A New Solution for Energy Storage

Cover art for the Accounts of Chemical Research special issue

38 Gossage, Z.T.; Simpson, B.H.; Schorr, N.B.; Rodríguez-López, J. Soft Surfaces for Fast Characterization and Positioning of Scanning Electrochemical Microscopy Nanoelectrode Tips.
Anal. Chem., 2016, 88,9897-9901.

A Fast Approach to Nanoelectrochemistry

37 Montoto, E.C.; Gavvalapalli, N.; Hui, J.;Burgess, M.; Sekerak, N.M.; Hernandez-Burgos, K.; Wei, T.; Kneer, M.; Grolman, J.M.; Cheng, K.J.; Lewis, J.A.; Moore, J.S.; Rodríguez-López, J. Redox Active Colloids as Discrete Energy Storage Carriers.
J. Am. Chem. Soc., 2016, 138, 13230-13237.

Versatile Nanoelectrochemistry for Energy Storage

36 Zhou, X.; Gossage, Z.T.; Simpson, B.H.; Hui, J.; Barton, Z.J.; Rodríguez-López, J. Electrochemical Imaging of Photoanodic Water Oxidation Enhancements on TiO2 Thin Films Modified by Sub-Surface Al Nano-Dimers.
ACS Nano, 2016, 10, 9346-9352.

A closer chemical look at metal nanoparticle-enhanced photoelectrochemistry

35 Hui, J.; Zhou, X.; Bhargava, R.; Chinderle, A.; Zhang, J.; Rodríguez-López, J. Kinetic Modulation of Outer-Sphere Electron Transfer Reactions on Graphene Electrode with a Sub-surface Metal Substrate.
Electrochimica Acta, 2016, 211, 1016-1023.

Enhancing interfacial reactivity through the thinnest electrode

34 Plaza, M.; Huang, X.; Ko, J.Y.P.; Brock, J.D.; Shen, M.; Simpson, B.H.; Rodríguez-López, J.; Ritzert, N.L.; Abruna, H.D.; Letchworth-Weaver, K.; Gunceler, D.; Arias, T.A.; Schlom, D.G. Structure of the Photo-Catalytically Active Surface of SrTiO3.
J. Am. Chem. Soc., 2016, 138 (25), 7816-7819

A surface-sensitive versatile approach to photocatalysis

33 Burgess, M.; Hernandez-Burgos, K.; Cheng, K.J.; Moore, J.S.; Rodríguez-López, J.* Impact of Electrolyte Composition on the Reactivity of a Redox Active Polymer Studied through Surface Interrogation and Ion-Sensitive Scanning Electrochemical Microscopy.
Analyst, 2016, 141, 3842-3850. Invited contribution to Emerging Investigators issue.

Elucidating optimal ionic interactions that enhance polymer reactivity for applications in redox flow batteries

32 Hui, J.; Burgess, M.; Zhang, J.; Rodríguez-López, J.* Layer Number Dependence of Li+ Intercalation on Few-Layer Graphene and Electrochemical Imaging of Its Solid-Electrolyte Interphase Evolution.
ACS Nano, 2016, 10, 4248-4257.

The unique behavior of Few Layer Graphene toward Li-ion intercalation

31 Barton, Z.J.; Rodríguez-López, J.* Emerging scanning probe approaches to the measurement of ionic reactivity at energy storage materials.
Anal. Bioanal. Chem., 2016, 408, 2707-2715. Invited Contribution to Youn Investigators in Analytical and Bioanalytical Science.

Versatile ionics for next-generation batteries

30 Simpson, B.H.; Rodríguez-López, J.* Electrochemical imaging and redox interrogation of surface defects on operating SrTiO3 photoelectrodes.
J. Am. Chem. Soc., 2015, 137, 14865-14868.

First use of nanoelectrodes to see surface defects influencing adsorbate reactivity in situ

29 Burgess, M.; Hernandez-Burgos, K.; Simpson, B.H.; Lichtenstein, T.; Avetian, S.; Nagarajuna, G.; Cheng, K.J.; Moore, J.S.; Rodríguez-López, J.*, Scanning Electrochemical Microscopy and Hydrodynamic Voltammetry Investigation of Charge Transfer Mechanisms on Redox Active Polymers.
Journal of The Electrochemical Society, 2016, 163 (4) H3006-H3013. Invited Contribution for the Special Issue Honoring Allen J. Bard.
-This publication was awarded the
Norman Hackerman Young Author award from the Electrochemical Society and also was selected as the cover figure.

A First Look on How Soluble Polymers React at Electrodes

Cover figure for the JES focus issue

28 Sevov, C.S.; Brooner, R.E.M.; Chenard, E.; Assary, R.S.; Moore, J.S.; Rodríguez-López.J.; Sanford, M.S.* Evolutionary Design of Low Molecular Weight Organic Anolytes for Applications in Nonaqueous Redox Flow Batteries. J. Am. Chem. Soc. 2015, 137 (45), 14465-14472
*ACS Editors' Choice.
Designing and evaluating robust molecules for redox flow

27 Simpson, B.H.; Rodríguez-López, J.* Emerging techniques for the in situ analysis of reaction intermediates on photo-electrochemical interfaces. Anal. Methods, 2015, 7, 7029-7041. Invited Contribution for the Emerging Investigator Issue.

Elucidating the Fate and Reactivity of Surface Photochemical Species

26 Simpson, B.H.; Rodríguez-López*. Redox titrations via Surface Interrogation Scanning Electrochemical Microscopy at an Extended Semiconducting Surface for the Quantification of Photogenerated Adsorbed Intermediates. Electrochim. Acta, 2015, 179, 74-83. Invited Contribution After the 65th ISE Meeting in Lausanne, Switzerland

Unleashing the Spatial and Temporal Power of SI-SECM for Photocatalysis

25 Duarte-Guevara, C.; Swaminathan, V.V.; Burgess, M.; Reddy Jr. B.; Salm, E.M.; Liu, Y.-S.; Rodríguez-López; Bashir, R. Quasi-Reference Electrodes for Robust ISFET Operation. Analyst, 2015, 140, 3630-3641.

PPY does it - Mark

24 Cristarella, T.; Chinderle, A.; Hui, J.; Rodríguez-López*. Single Layer Graphene as a Stable and Transparent Electrode for Non-Aqueous Radical Annihilation Electrogenerated Chemiluminescence. Langmuir 2015, 31, 3999-4007

The World's Thinnest Electrode put to the Challenge of High Energy Electrochemistry

23 Minguzzi, A.; Battistel, D.; Rodríguez-López; Vertova, A.; Rondinini, S.; Bard, A.J.; Daniele, S. Rapid characterization of oxygen evolving electrocatalyst spot arrays by the substrate generation/tip collection mode of SECM with decreased O2 diffusion layer overlap. J. Phys. Chem. C 2015, 119, 2941-2947.

A Powerful Method for Quantifying Localized Oxygen Evolution

22 Gavvalapalli, N.; Hui, J.; Cheng, K.; Lichtenstein, T.; Shen, M.; Moore, J.S.; Rodríguez-López*. Impact of Redox Active Polymer Molecular Weight on the Electrochemical Properties and Transport Across Porous Separators in Non-Aqueous Solvents. J. Am. Chem. Soc. 2014, 136, 16309-16316.

A New Strategy for High Performance Non Aqueous Flow Batteries

21 Barton, Z.J.; Rodríguez-López*. Lithium Ion Quantification using Mercury Amalgams as In Situ Electrochemical Probes in Nonaqueous Media. Anal. Chem. 2014, 86, 10660-10667.

Imaging Ionic Reactivity for Imagining New Batteries

* = corresponding author


20 Ritzert, N.L.; Li, W.; Tan, C.; Rodriguez-Calero, G.G.; Rodríguez-López; Hernandez-Burgos, K.; Conte, S.; Parks, J.J.; Ralph, D.C.; Abruña, H.D. Single layer graphene as an electrochemical platform. Faraday Discuss. 2014, 172, 27-45.

19 Ritzert, N.L.; Rodríguez-López, J.; Tan, C.; Abruña, H.D. Kinetics of Interfacial Electron Transfer at Single Layer Graphene Electrodes in Aqueous and Non-Aqueous Solutions. Langmuir, 2013, 29(5), 1683-1694.

18 Rodríguez-López, J.; Videa-Vargas, M. Study of the Ion Transfer of Quaternary Ammonium Ions by SWV. J. Mex. Chem. Soc. 2012, 56(4), 417-425.

17 Rodríguez-López, J.; Shen, M.; Nepomnyashchii, A.B.; Bard, A.J. Scanning Electrochemical Microscopy Study of Ion Annihilation Electrogenerated Chemiluminiscence of Rubrene and [Ru(bpy)3]2+. J. Am. Chem. Soc. 2012, 134, 9240-9250.

16 Zigah, D.; Rodríguez-López, J.; Bard, A.J. Quantification of photoelectrogenerated hydroxyl radical on TiO2 by surface interrogation scanning electrochemical microscopy. Phys. Chem. Chem. Phys. 2012, 14, 12764-12772.

15 Rodríguez-López, J.; Ritzert, N.L.; Mann, J.A.; Tan, C.; Dichtel, W.R.; Abruña, H.D. Surface Diffusion of Electrochemically Active Tripodal Motifs on Graphene, a Scanning Electrochemical Microscopy Approach. J. Am. Chem. Soc. 2012, 134, 6224-6236.

14 Tan, C.; Rodríguez-López, J.; Parks, J.J.; Ritzert, N.L.; Ralph, D.C.; Abruña, H.D. The Examination of the Reactivity of Graphene Imperfections Using Scanning Electrochemical Microscopy. ACS Nano 2012, 6, 3070-3079.

13 Mann, J.A.; Rodríguez-López, J.; Abruña, H.D.; Dichtel, W.R. Multivalent bonding motifs for the noncovalent functionalization of graphene. J. Am. Chem. Soc. 2011, 133, 17614-17617.

12 Rodríguez-López, J.; Minguzzi, A.; Bard, A.J. The reaction of various reductants with oxide films on Pt electrodes as studied by the Surface Interrogation Mode of Scanning Electrochemical Microscopy (SI-SECM). Possible validity of a Marcus relationship. J. Phys .Chem. C. 2010, 114, 18645-18655.

11 Wang, Q.; Rodríguez-López, J.; Bard, A.J. Evaluation of Chemical Reactions from Two Electrogenerated Species in Picoliter Volumes by Scanning Electrochemical Microscopy. Chem. Phys. Chem. 2010, 11, 2969-2978.

10 Shen, M.; Rodríguez-López, J.; Huang, J.; Liu, Q.; Zhu, X.-H.; Bard, A.J. Electrochemistry and Electrogenerated Chemiluminescence of Dithienylbenzothiadiazole Differential Reactivity of Donor and Acceptor Groups and Simulations of Radical Cation — Anion and Dication — Radical Anion Annihilations. J. Am. Chem. Soc. 2010, 132, 13453-13461.

9 Shen, M.; Rodríguez-López, J.; Lee, Y.-T.; Chen, C.-T.; Fan, F.F.-R.; Bard, A.J.; Electrochemistry and Electrogenerated Chemiluminescence of a Novel Donor-Acceptor FPhSPFN Red Fluorophore. J. Phys. Chem. C 2010, 114, 9772-9780.

8 Rodríguez-López, J.; Bard, A.J. Scanning Electrochemical Microscopy: Surface Interrogation of Adsorbed Hydrogen and the Open Circuit Catalytic Decomposition of Formic Acid at Platinum. J. Am. Chem. Soc. 2010, 132, 5121-5129.

7 Wang, Q.; Rodríguez-López, J.; Bard, A.J. The Reaction of Br2 with Adsorbed CO on Pt Studied by the Surface Interrogation Mode of Scanning Electrochemical Microscopy. J. Am. Chem. Soc. 2009, 131, 17046-17047.

6 Lin, C. L.; Rodriguez-Lopez, J.; Bard, A.J. Micropipette Delivery-Substrate Collection Mode of Scanning Electrochemical Microscopy for the Imaging of Electrochemical Reactions and the Screening of Methanol Oxidation Electrocatalysts. Anal. Chem. 2009, 81, 8868-8877.

5 Jung, C.; Sánchez-Sánchez, C.M.; Lin, C.-L.; Rodríguez-López, J.; Bard, A.J. Electrocatalytic Activity of Pd-Co Bimetallic Mixtures for Formic Acid Oxidation Studied by Scanning Electrochemical Microscopy. Anal. Chem. 2009, 81, 7003-7008.

4 Rodríguez-López, J.; Alpuche-Aviles, M.A.; Bard, A.J. Interrogation of Surfaces for the Quantification of Adsorbed Species on Electrodes: Oxygen on Gold and Platinum in Neutral Media. J. Am. Chem. Soc. 2008, 130, 16985-16995.

3 Minguzzi A.; Alpuche-Aviles, M.A.; Rodriguez Lopez, J.; Rondinini, S.; Bard, A.J. Screening of Oxygen Evolution Electrocatalysts by Scanning Electrochemical Microscopy Using a Shielded Tip Approach. Anal. Chem. 2008, 80, 4055-4064.

2 Sánchez-Sánchez, C.M.; Rodríguez-López, J.; Bard, A.J. Scanning Electrochemical Microscopy. 60. Quantitative Calibration of the SECM Substrate Generation / Tip Collection Mode and Its Use for the Study of the Oxygen Reduction Mechanism. Anal. Chem. 2008, 80, 3254-3260.

1 Rodríguez-López, J.; Alpuche-Aviles, M.A.; Bard, A.J. Selective Insulation with Poly(tetrafluoroethylene) of Substrate Electrodes for Electrochemical Background Reduction in Scanning Electrochemical Microscopy. Anal. Chem. 2008, 80, 1813-1818.

Book Chapters and Other Publications

1 Rodríguez-López, J. Chapter 4: The Surface Interrogation Mode of Scanning Electrochemical Microscopy (SI-SECM): an approach to the study of adsorption and (electro)catalysis at electrodes. In Electroanalytical Chemistry, a series of advances. Vol. 24. Bard, A.J. and Zoski, C.G., Eds. 2012, CRC Press, pp. 287-352. [link]

2 Rodríguez-López, J.; Zoski, C.G.; Bard, A.J. Chapter 16. SECM applications to electrocatalysis and photocatalysis and surface interrogation. In Scanning Electrochemical Microscopy. Bard, A.J.; Mirkin, M.V., Eds. 2012, CRC Press, pp. 525-568. [link]

3 Por el Camino de la Investigación, experiencia doctoral en Austin. Integratec, 15(79), Jul-Sep. 2008, p.14. [link]