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Journal articles on the topic 'Cationic redox probe'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Kushner, Douglas, Adlai Katzenberg, Xiaoyan Luo, and Ahmet Kusoglu. "Cationic Ionomer Thin Films for Alkaline Electrochemical Energy Conversion." ECS Meeting Abstracts MA2022-02, no. 41 (2022): 1519. http://dx.doi.org/10.1149/ma2022-02411519mtgabs.

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Ionomers are used as the solid-electrolyte in many electrochemical energy conversion technologies where they offer many functionalities such as ion conduction, electrical insulation, and water transport. These ionomers are found as nanometer-thick electrolyte thin films within the catalyst layers of fuel cells, electrolyzers, and hydrogen-based redox flow batteries where electrochemical reactions take place. The ionomer performance and durability are strongly related to their properties governed by a myriad of parameters such as chemical structure, water uptake, and morphology, all of which ar

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2

Huang, Zhongnan, Xuan Luo, Fei Yan, and Bo Zhou. "Homogeneous Electrochemical Aptasensor for Sensitive Detection of Zearalenone Using Nanocomposite Probe and Silica Nanochannel Film." Molecules 28, no. 21 (2023): 7241. http://dx.doi.org/10.3390/molecules28217241.

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Developing rapid and efficient analytical methods is of great importance for food safety Herein, we present a novel homogeneous electrochemical aptasensor for ultrasensitive quantitative determination of zearalenone (ZEN) based on a nanocomposite probe and silica nanochannel film. X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and UV–Vis characterization techniques confirm that graphene oxide (GO) bears an aromatic conjugated structure, along with hydroxyl and carboxyl groups, facilitating the subsequent adsorption of cationic redox hexa-ammine-ruthenium (III) (Ru(NH

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3

Zhang, Tongtong, Shuai Xu, Xingyu Lin, Jiyang Liu, and Kai Wang. "Label-Free Electrochemical Aptasensor Based on the Vertically-Aligned Mesoporous Silica Films for Determination of Aflatoxin B1." Biosensors 13, no. 6 (2023): 661. http://dx.doi.org/10.3390/bios13060661.

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Herein we report a highly specific electrochemical aptasenseor for AFB1 determination based on AFB1-controlled diffusion of redox probe (Ru(NH3)63+) through nanochannels of AFB1-specific aptamer functionalized VMSF. A high density of silanol groups on the inner surface confers VMSF with cationic permselectivity, enabling electrostatic preconcentration of Ru(NH3)63+ and producing amplified electrochemical signals. Upon the addition of AFB1, the specific interaction between the aptamer and AFB1 occurs and generates steric hindrance effect on the access of Ru(NH3)63+, finally resulting in the red

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Yan, Zhengzheng, Shiyue Zhang, Jiyang Liu, and Jun Xing. "Homogeneous Electrochemical Aptamer Sensor Based on Two-Dimensional Nanocomposite Probe and Nanochannel Modified Electrode for Sensitive Detection of Carcinoembryonic Antigen." Molecules 28, no. 13 (2023): 5186. http://dx.doi.org/10.3390/molecules28135186.

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A rapid and convenient homogeneous aptamer sensor with high sensitivity is highly desirable for the electrochemical detection of tumor biomarkers. In this work, a homogeneous electrochemical aptamer sensor is demonstrated based on a two-dimensional (2D) nanocomposite probe and nanochannel modified electrode, which can realize sensitive detection of carcinoembryonic antigen (CEA). Using π-π stacking and electrostatic interaction, CEA aptamer (Apt) and cationic redox probe (hexaammineruthenium(III), Ru(NH3)63+) are co-loaded on graphite oxide (GO), leading to a 2D nanocomposite probe (Ru(NH3)63+

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Florea, Ciprian, Andra Mihaela Onas, Andreea Madalina Pandele, Matei Raicopol, and Luisa Pilan. "Controlled Surface Functionalization Using Aryldiazonium Salts for the Development of Aptasensing Platforms." ECS Meeting Abstracts MA2023-02, no. 62 (2023): 2946. http://dx.doi.org/10.1149/ma2023-02622946mtgabs.

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It is well known that both the aptamer surface density and surface chemistry can have a strong influence on the analytical performance of aptasensors based on target-induced conformational changes1. In this context, we report here an improved protocol for obtaining aptasensing platforms which allows fine-tuning the DNA aptamer surface coverage. First, glassy carbon substrates were functionalized with ethynylphenyl groups through the electrochemical reduction of silyl-protected ethynylphenyl diazonium tetrafluoroborates followed by deprotection with tetrabutylammonium fluoride2. The successful

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Lazicki, Andy Peter, Casey Huettman, and Johna Leddy. "(Invited) Sulfonation of Paper: Separators with Permselectivity for Cationic Redox Probes." ECS Meeting Abstracts MA2025-01, no. 57 (2025): 2757. https://doi.org/10.1149/ma2025-01572757mtgabs.

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Cation exchange membranes commonly serve as separators in electrochemical systems. Sulfonation of paper generates a scalable, low cost separator. Cellulose is modified with anion exchange sites through oxidation and then sulfonation. Sulfonated cellulose can serve in electrochemical systems and devices. Sulfonation conditions were optimized to yield membranes with anion exchange sites as determined by titration. Permselectivity of the membranes was evaluated cyclic voltammetrically for common, charged redox probes. Sulfonated cellulose membranes displayed low resistance and a high degree of su

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7

Mozhzhukhina, Nataliia, Aleksandar Matic, Gilles Moehl, et al. "Understanding LiNiO₂ Electronic Structure and Redox Mechanism by Raman and X-Ray Techniques." ECS Meeting Abstracts MA2023-02, no. 2 (2023): 227. http://dx.doi.org/10.1149/ma2023-022227mtgabs.

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LiNiO2 (LNO) is considered a very promising and high energy density alternative to Co-containing Li-ion battery cathodes. It is also the benchmarked cathode material of the European BIGMAP project, which aim is to combine advance operando characterization, computational modelling and artificial intelligence in order to accelerate the research and development of new generation batteries. However, the material suffers from several degradation issues resulting in fading cell performance. In particular, the presence of highly reactive Ni4+ species at the electrode/electrolyte interface1, Ni dissol

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8

Venkataraman, Dharuman. "Lipids on graphene nano structures and DNA sensing." Abstracts of International Conferences & Meetings (AICM) 1, no. 5 (2021): 18. https://doi.org/10.5281/zenodo.5373401.

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<strong>Introduction: </strong>Lipid, an amphipilic molecules safe guarding cellular content and also assists transport of ions and molecules selectively for further biochemical reactions (1).  Because of its biocompatibility and ability to form spherical vesicle structure, they are used as payloads drug and gene delivery applications and recently in biosensing. Critical requirement of using these vesicles is to stabilization and prevention of spherical structure upon their contact with solid surfaces. Although various types of molecular cushions and solids have been tried, graphene with

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Malecka, Kamila, Shalini Menon, Gopal Palla, et al. "Redox-Active Monolayers Self-Assembled on Gold Electrodes—Effect of Their Structures on Electrochemical Parameters and DNA Sensing Ability." Molecules 25, no. 3 (2020): 607. http://dx.doi.org/10.3390/molecules25030607.

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The background: The monolayers self-assembled on the gold electrode incorporated transition metal complexes can act both as receptor (“host” molecules) immobilization sites, as well as transducer for interface recognitions of “guest” molecules present in the aqueous solutions. Their electrochemical parameters influencing the sensing properties strongly depend on the transition metal complex structures. The objectives: The electrochemical characterization of the symmetric terpyridine–M2+–terpyridine and asymmetric dipyrromethene–M2+–terpyridine complexes modified with ssDNA probe covalently att

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10

Liyanage, Madhuka Malshani, and Rebecca Lai. "Antimicrobial Peptide-Based Sensor for the Electrochemical Detection of Methicillin-Resistant Staphylococcus Aureus." ECS Meeting Abstracts MA2024-01, no. 49 (2024): 2701. http://dx.doi.org/10.1149/ma2024-01492701mtgabs.

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Methicillin-resistant Staphylococcus aureus (MRSA) is a gram-positive bacterium that colonizes on the skin and nasal track of humans, which can lead to serious illnesses such as skin and soft tissue infections, pneumonia, and septicemia.MRSA is resistant to an entire class of antibiotics called beta-lactams, including penicillin, amoxicillin, and oxacillin, making it more difficult to treat. Culture based methods and molecular based methods like PCR are currently being used for the detection of MRSA, but these methods possess the drawbacks of being slow and expensive, respectively. Thus, we fo

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11

Togonon, Jazer Jose H., Antonella Iadecola, Lorenzo Stievano, Alessandro Longo, Jean-Noël Chotard, and Laurence Croguennec. "Towards the Direct Observation of the Local and Electronic Structure Evolution of Positive Electrode Materials by X-Ray Raman Scattering and X-Ray Emission Spectroscopy." ECS Meeting Abstracts MA2024-01, no. 46 (2024): 2577. http://dx.doi.org/10.1149/ma2024-01462577mtgabs.

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The emergence of high brilliance synchrotron sources and the availability of more sophisticated infrastructure have opened doors to advanced material characterization, enabling a profound understanding of new processes and mechanisms in battery research. [1] More specifically, non-resonant Valence-to-Core X-ray emission spectroscopy (VtC-XES) and X-ray Raman scattering (XRS) stand out as complementary photon-in/photon-out X-ray spectroscopy techniques. The unique capability of these techniques lies in their access to soft X-ray edges using a hard X-ray beam, providing comprehensive information

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12

Basnig, Deomila, Neus Vilá, Grégoire Herzog, and Alain Walcarius. "Voltammetric behaviour of cationic redox probes at mesoporous silica film electrodes." Journal of Electroanalytical Chemistry 872 (September 2020): 113993. http://dx.doi.org/10.1016/j.jelechem.2020.113993.

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13

Steen, William A., Kavita M. Jeerage, and Daniel T. Schwartz. "Raman Spectroscopy of Redox Activity in Cathodically Electrodeposited Nickel Hexacyanoferrate Thin Films." Applied Spectroscopy 56, no. 8 (2002): 1021–29. http://dx.doi.org/10.1366/000370202760249756.

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The intercalation of cations into electrodeposited nickel hexacyanoferrate (NiHCF) depends on the stoichiometry and oxidation state of the material. To better understand this material's performance as a cation separation matrix, the oxidation state needs to be measured independently from the stoichiometry, regardless of the particular intercalated cation. Reported is the use of Raman spectroscopy to quantify the absolute oxidation state of NiHCF thin films. Raman spectroscopy probes NiHCF's cyanide bonds, which are sensitive to the oxidation state of the matrix. The oxidation state is controll

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14

Raouafi, Noureddine, Janet Bahri, Rihab Sahli, and Khaled Boujlel. "Redox-responsive probes for selective chelation of bivalent cations." QScience Connect, no. 2012 (August 2012): 8. http://dx.doi.org/10.5339/connect.2012.8.

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15

MacInnes, Molly M., Zachary R. Jones, Bo Li, et al. "Using molten salts to probe outer-coordination sphere effects on lanthanide(iii)/(ii) electron-transfer reactions." Dalton Transactions 50, no. 43 (2021): 15696–710. http://dx.doi.org/10.1039/d1dt02708e.

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Molten salt matrices were used to evaluate outer-coordination sphere effects on lanthanide redox chemistry. Results were rationalized by correlating the polarization power of the outer-sphere cation with shifts in the Ln3+/Ln2+ reduction potentials.

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16

Dai, Kehua, Jinpeng Wu, Zengqing Zhuo, et al. "High Reversibility of Lattice Oxygen Redox Quantified by Direct Bulk Probes of Both Anionic and Cationic Redox Reactions." Joule 3, no. 2 (2019): 518–41. http://dx.doi.org/10.1016/j.joule.2018.11.014.

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McDaniel, Jenny K., Khalil Bdeir, Douglas B. Cines, and X. Long Zheng. "Synthetic Partially Reduced Human Neutrophil Peptide (HNP)-1 Inhibits Platelet Adhesion and Aggregation on Von Willebrand Factor-Collagen Surfaces Under Arterial Shear Stress through a Disulfide Bond Reduction Mechanism." Blood 128, no. 22 (2016): 3722. http://dx.doi.org/10.1182/blood.v128.22.3722.3722.

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Abstract Background: Human neutrophil peptides (HNPs) are small cationic proteins primarily released from activated and degranulated neutrophils. HNPs have antimicrobial activity against diverse bacteria, viruses, fungi, and parasites. Additionally, HNPs exhibit prothrombotic properties by enhancing platelet aggregation and fibrin formation and by inhibiting proteolytic cleavage of von Willebrand factor (VWF) by ADAMTS13. However, the role of HNPs in thrombus formation under more physiological conditions (i.e. under flow) has not been determined. Objective: To investigate the effects of HNPs o

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18

Marchini, Edoardo, Stefano Caramori, Rita Boaretto, et al. "Self-Assembled Multinuclear Complexes for Cobalt(II/III) Mediated Sensitized Solar Cells." Applied Sciences 11, no. 6 (2021): 2769. http://dx.doi.org/10.3390/app11062769.

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In this work, we designed a tetranuclear self-assembled dye 4 (2Z907-Ag+-(Ru(TMAM))) exploiting a combination of the antenna effect and positively-charged groups designed to repel the oxidized form of cationic cobalt redox mediators, in order to reduce recombination and increase the efficiency of dye sensitized solar cells (DSSCs). Charge transfer and excited dynamics were probed by photoelectrochemical and photophysical measurements. The sensitized cell performance, recorded with a [Co(bpy)3]3+/2+ redox mediator and PEDOT counter electrode, showed an improvement when passing from Z907 to the

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Xu, Jiahe, Johna Leddy, and Carol Korzeniewski. "Cyclic Voltammetry as a Probe of Selective Ion Transport within Layered, Electrode-Supported Ion-Exchange Membrane Materials." Journal of The Electrochemical Society 169, no. 2 (2022): 026520. http://dx.doi.org/10.1149/1945-7111/ac51fd.

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Cyclic voltammetry was applied to investigate the permselective properties of electrode-supported ion-exchange polymer films intended for use in future molecular-scale spectroscopic studies of bipolar membranes. The ability of thin ionomer film assemblies to exclude mobile ions charged similarly to the polymer (co-ions) and accumulate ions charged opposite to the polymer (counterions) was scrutinized through use of the diffusible redox probe molecules [Ru(NH3)6]3+ and [IrCl6]2−. With the anion exchange membrane (AEM) phase supported on a carbon disk electrode, bipolar junctions formed by addit

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Asefifeyzabadi, Narges, Torrey E. Holland, Poopalasingam Sivakumar, et al. "Sequence-Independent DNA Adsorption on Few-Layered Oxygen-Functionalized Graphene Electrodes: An Electrochemical Study for Biosensing Application." Biosensors 11, no. 8 (2021): 273. http://dx.doi.org/10.3390/bios11080273.

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DNA is strongly adsorbed on oxidized graphene surfaces in the presence of divalent cations. Here, we studied the effect of DNA adsorption on electrochemical charge transfer at few-layered, oxygen-functionalized graphene (GOx) electrodes. DNA adsorption on the inkjet-printed GOx electrodes caused amplified current response from ferro/ferricyanide redox probe at concentration range 1 aM–10 nM in differential pulse voltammetry. We studied a number of variables that may affect the current response of the interface: sequence type, conformation, concentration, length, and ionic strength. Later, we s

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Walsh, Darren Anthony. "Electrochemical Studies of Ion Transport through Single‐Walled Carbon Nanotubes Using Polyoxometalate/Nanotube Composite Electrodes." ECS Meeting Abstracts MA2024-02, no. 11 (2024): 1460. https://doi.org/10.1149/ma2024-02111460mtgabs.

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In this presentation, I describe the development of a hybrid material based on polyoxometalate (POM) clusters encapsulated within single-walled carbon nanotubes (SWNTs). Encapsulation of the POMs within the SWNTs is driven by electron transfer from the SWNTs to the POMs clusters, resulting in the spontaneous formation of host–guest POM@SWNT redox‐active materials. The SWNTs can conduct charge to and from the encapsulated guest molecules, allowing electrical access to >90% of the redox species. I then describe the use of this material as a model system for exploring ion transport across atom

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Chakarova, Kristina K., Mihail Y. Mihaylov, Bayan S. Karapenchev, et al. "FTIR Detection of Ce3+ Sites on Shape-Controlled Ceria Nanoparticles Using Adsorbed 15N2 as a Probe Molecule." Molecules 30, no. 15 (2025): 3100. https://doi.org/10.3390/molecules30153100.

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Ceria is an important redox catalyst due to the facile Ce3+/Ce4+ switching at its surface. Therefore, in situ determination of the oxidation state of surface cerium cations is of significant interest. Infrared spectroscopy of probe molecules such as CO holds great potential for this purpose. However, the ability of CO to reduce Ce4+ cations is an important drawback as it alters the initial cerium speciation. Dinitrogen (N2), due to its chemical inertness, presents an attractive alternative. We recently demonstrated that low-temperature 15N2 adsorption on stoichiometric ceria leads to the forma

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Szabo, Gabor, Preethi Susan Mathew, and Prashant V. Kamat. "(Invited) Ion Migration Influencing Perovskite Solar Cell Performance and Stability." ECS Meeting Abstracts MA2024-01, no. 13 (2024): 1086. http://dx.doi.org/10.1149/ma2024-01131086mtgabs.

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The thermodynamic and redox properties of halide perovskites provide a strong driving force for hole trapping and oxidation of iodide species. When in contact with a non-polar solvent, the migration of iodine species is further extended to expulsion of iodine from the perovskite film. Thus, the mobility of halides and their susceptibility to hole-induced oxidation play a crucial role in determining the long-term stability of metal halide perovskite solar cells. When Ruddlesden-Popper 2D mixed-halide perovskite films with spacer cations such as butylammonium are introduced into three-dimensiona

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Zhang, Raymond, Timofey Averianov та Ekaterina Pomerantseva. "Assembly of Two-Dimensional δ-V₂O₅-Ti₃C₂T_x Heterostructure Electrodes for Li-Ion Batteries". ECS Meeting Abstracts MA2022-02, № 2 (2022): 150. http://dx.doi.org/10.1149/ma2022-022150mtgabs.

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The bilayered phase of vanadium oxide (δ-V2O5∙nH2O or BVO) synthesized via sol-gel synthesis method is an attractive candidate to be used as a cathode material for Li-ion batteries (LIBs) due to its expanded interlayer spacing, and high theoretical capacity. However, poor electrical conductivity and rapid capacity fade present challenges for achieving high-rate performance and good cycle life during cycling in LIBs. A viable solution to mitigating these drawbacks is to fabricate two-dimensional (2D) heterostructures comprised of vanadium oxide and an additional selected 2D material. Titanium c

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Morozov, Anatolii V., Ivan A. Moiseev, Aleksandra A. Savina, and Artem M. Abakumov. "Impact of TM-O Bonding Covalency on the Structure and Performance of Li-Rich Layered Oxide Positive Electrodes for Li-Ion Batteries." ECS Meeting Abstracts MA2022-01, no. 2 (2022): 340. http://dx.doi.org/10.1149/ma2022-012340mtgabs.

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The application of positive electrode (cathode) materials with anionic redox activity is hoped to improve the energy density of future Li-ion batteries, and thus facilitate the mileage issue in rapidly growing electric transport industry. Such positive expectations are dictated by promising application potential of the Li4/3-xNi2+ xMn4+ 2/3-xCo3+ xO2 layered oxides demonstrating outstanding reversible discharge capacity exceeding 250 mAh/g and specific energy density of > 1000 Wh/kg. Such outstanding values are the result of joint participance of cationic (Ni2+→Ni3+→Ni4+, Co3+→Co4+) redox t

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Sahli, Rihab, Janet Bahri, Issa Tapsoba, Khaled Boujlel, and Noureddine Raouafi. "Solvent Effects on the Electrochemical Behavior of TAPD-Based Redox-Responsive Probes for Cadmium(II)." International Journal of Electrochemistry 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/305721.

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Two tetralkylated phenylenediamines (TAPD)1and2have been prepared by reductive alkylation ofpara-dimethylaminoaniline with furfural or thiophene 2-carboxaldehyde, respectively. Their chelation ability has been evaluated as electrochemical guest-responsive chemosensors for Cd(II) in acetonitrile (ACN), dimethylformamide (DMF), propylene carbonate (PC), and nitromethane (NM). The voltamperometric studies showed that these compounds are able to bind the Cd(II) cation with strong affinities except in DMF. The redox features of the chemosensors changed drastically when they are bounded to Cd(II) to

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Uhrmacher, Michael, and Klaus-Peter Lieb. "Phase Transitions in Oxides Studied by Perturbed Angular Correlation Spectroscopy." Zeitschrift für Naturforschung A 55, no. 1-2 (2000): 90–104. http://dx.doi.org/10.1515/zna-2000-1-217.

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Radioactive atoms located on cation sites in oxide matrices can be used to monitor phase transitions by measuring the electric or magnetic hyperfine interactions by means of Perturbed Angular Correlations spectroscopy. The article illustrates three types of phase transitions studied with 111In tracers and their daughter nuclei 111Cd, namely magnetic, structural and REDOX phase transitions in binary and ternary polycrystalline or single-crystalline oxides. In this context, we also discuss the question of identifying the probes' lattice site(s), the scaling of the Electric Field Gradients in oxi

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Wang, Junbo, David Stenzel, Raheleh Azmi, et al. "Spinel to Rock-Salt Transformation in High Entropy Oxides with Li Incorporation." Electrochem 1, no. 1 (2020): 60–74. http://dx.doi.org/10.3390/electrochem1010007.

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High entropy oxides (HEOs) constitute a promising class of materials with possibly new and largely unexplored properties. The virtually infinite variety of compositions (multi-element approach) for a single-phase structure allows the tailoring of their physical properties and enables unprecedented materials design. Nevertheless, this level of versatility renders their characterization as well as the study of specific processes or reaction mechanisms challenging. In the present work, we report the structural and electrochemical behavior of different multi-cationic HEOs. Phase transformation fro

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Chakarova, Kristina K., Mihail Y. Mihaylov, Bayan S. Karapenchev, et al. "N2 as an Efficient IR Probe Molecule for the Investigation of Ceria-Containing Materials." Molecules 29, no. 15 (2024): 3608. http://dx.doi.org/10.3390/molecules29153608.

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Ceria and ceria-based catalysts are very important in redox and acid-base catalysis. Nanoceria have also been found to be important in biomedical applications. To design efficient materials, it is necessary to thoroughly understand the surface chemistry of ceria, and one of the techniques that provides such information about the surface is the vibrational spectroscopy of probe molecules. Although the most commonly used probe is CO, it has some disadvantages when applied to ceria and ceria-based catalysts. CO can easily reduce the material, forming carbonate-like species, and can be disproporti

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Mu, Edward Weian, Hari Ramachandran, Eder Lomeli, et al. "A New High-Valent Fe Redox Couple in Intercalation Electrodes." ECS Meeting Abstracts MA2024-01, no. 2 (2024): 397. http://dx.doi.org/10.1149/ma2024-012397mtgabs.

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The overwhelming majority of layered oxide cathode materials are based on the redox activity of expensive and scarce transition metals like Co and Ni. While the Fe-redox based material LiFePO4 has become increasingly attractive due to its low cost, its low gravimetric energy density and relatively low operating voltage limit its use cases. A high-voltage Fe-based layered oxide cathode would provide high energy density utilizing the redox-activity of the most abundant transition metal in Earth’s crust, but such a material that provides stable and reversible electrochemical performance remains e

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Dooryhee, Eric, Andrey Yakovenko, Jonathan Hanson, Sanjit Ghose, Jose Rodriguez, and Sanjaya Senanayake. "Tracking Cation Migration in Catalysts by Modulated Enhanced Powder Diffraction." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1175. http://dx.doi.org/10.1107/s205327331408824x.

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Mixtures of Cu-Fe oxides are used for numerous industrial catalytic processes including the Water-gas shift reaction (WGS: CO + H2O -> CO2 + H2). In this work we measure the structural changes of CuFe2O4 under redox (oxidizing and reducing) and WGS reaction conditions. A key component associated with the catalytic properties of this material is the reversible transfer of Cu in and out of the spinel structure during the reaction. The WGS reaction is the most active when Cu is metallic and on the surface of the spinel which has become Fe3O4. The reversible nature of the Cu migration preserves

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Yadav, Jaya, Sai Pranav Vanam, Baskar Senthilkumar, Penphitcha Amonpattaratkit, and Prabeer Barpanda. "Manganese-Based Tunnel and Layered Oxide Cathodes for Secondary Alkali-Ion Batteries." ECS Meeting Abstracts MA2023-02, no. 4 (2023): 723. http://dx.doi.org/10.1149/ma2023-024723mtgabs.

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Designing new cathode materials remains crucial in developing (post) Li-ion batteries. Mn-based oxide cathodes have received wide attention due to their sustainable nature, low cost, elemental abundance, structural diversity/polymorphism, and rich oxidation states (2+ to 7+), offering tunable redox potential [1]. Here, we have investigated different oxide-based cathode insertion compounds for secondary metal-ion batteries. i) We have demonstrated tunnel-type sodium insertion material Na44MnO2(NMO) as an intercalation host for Li-ion and K-ion batteries. The solution combustion synthesized Na0.

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Ozuguzel, Umut, Adelia Aquino, Shelley Minteer, and Carol Korzeniewski. "Tools to Simulate Resonance Raman Spectra for in-Situ Studies of Electron Transport Mediators and Bioelectrocatalysts." ECS Meeting Abstracts MA2023-02, no. 52 (2023): 2498. http://dx.doi.org/10.1149/ma2023-02522498mtgabs.

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Raman spectroscopy is widely applied as an in-situ probe of electrochemical processes. When the excitation light is resonant with an electronic transition, the detected signal can be enhanced by more than 1,000-fold. Resonance Raman (RR) spectroscopy has broad application in the study of common organic electron transport mediators (i.e., viologens, phenazines, photosynthetic pigments) and active sites of redox proteins (i.e., laccases, peroxidases, flavin-containing enzymes). To support investigations of bioelectrocatalytic membranes, we have been adapting RR spectroscopy to gain insights into

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Zapata, Fabiola, Antonio Caballero, Pedro Molina, and Alberto Tarraga. "A Ferrocene-Quinoxaline Derivative as a Highly Selective Probe for Colorimetric and Redox Sensing of Toxic Mercury(II) Cations." Sensors 10, no. 12 (2010): 11311–21. http://dx.doi.org/10.3390/s101211311.

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Hernández, Victor Agmo, and Fritz Scholz. "One redox probe (dmfc) can drive the transfer of anions and cations across the aqueous electrolyte∣ionic liquid interface." Electrochemistry Communications 8, no. 6 (2006): 967–72. http://dx.doi.org/10.1016/j.elecom.2006.04.002.

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Yu, Fabiao, Ping Song, Peng Li, Bingshuai Wang, and Keli Han. "Development of reversible fluorescence probes based on redox oxoammonium cation for hypobromous acid detection in living cells." Chemical Communications 48, no. 62 (2012): 7735. http://dx.doi.org/10.1039/c2cc33264g.

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Smida, Hassiba, Christine Thobie-Gautier, Mohammed Boujtita, and Estelle Lebegue. "(Digital Presentation) Electrochemical Single Impact Method for Electroactive Bacterial Detection Onto Carbon Ultramicroelectrode." ECS Meeting Abstracts MA2022-02, no. 52 (2022): 1992. http://dx.doi.org/10.1149/ma2022-02521992mtgabs.

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This work aims to design a high sensitivity and selectivity biosensor based on the electrochemistry of single impacts onto ultramicroelectrode (UME) to detect and identify various bacterial strains. The main objective is to establish a unique electrochemical signature for each bacterial cell through the individual impact event signal on the surface of the UME [1, 2]. First, we focus on the detection of well-known electroactive Gram-negative bacteria such as Shewanella oneidensis in order to be able to selectively detect these different single cells. In this case, the strategy currently used is

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Metzger, E., D. Langlet, E. Viollier, et al. "Artificially induced migration of redox layers in a coastal sediment from the Northern Adriatic." Biogeosciences Discussions 10, no. 7 (2013): 12029–63. http://dx.doi.org/10.5194/bgd-10-12029-2013.

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Abstract. Long term experimental studies suggest that, under anoxic transient conditions, redox fronts within the sediment shift upwards causing sequential rise and fall of benthic fluxes of reduced species (Mn(II), Fe(II) than S(−II)). Infaunal benthic organisms are associated to different redox fronts as micro-habitats and must be affected by such changes during natural hypoxia events. In order to document geochemical evolution of the sediment during prolonged anoxia in a realistic system, benthic chambers were deployed on the seafloor of the Northern Adriatic and sampled after 9, 30 and 315

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Paulik, Matthew G., Paula A. Brooksby, Andrew D. Abell, and Alison J. Downard. "Grafting Aryl Diazonium Cations to Polycrystalline Gold: Insights into Film Structure Using Gold Oxide Reduction, Redox Probe Electrochemistry, and Contact Angle Behavior." Journal of Physical Chemistry C 111, no. 21 (2007): 7808–15. http://dx.doi.org/10.1021/jp0706578.

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Madagalam, Mallikarjun, Mattia Bartoli, Catarina Fernandes, et al. "Enhancing Electrochemical Sensor Performance: Studies of Electrodes Tailored with ZnO/ZnFe₂O₄ Nanoparticles." ECS Meeting Abstracts MA2024-01, no. 47 (2024): 2627. http://dx.doi.org/10.1149/ma2024-01472627mtgabs.

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Spinel metal oxides possess excellent magnetic, electrical, and optical properties. They take AB2O4 (face centered cubic) form with oxygen anions providing tetrahedral (Td) and octahedral (Oh) sites for A+2 and B+3 cations. Spinel can have a normal, inverse, or mixed form based on the occupancy of different cations in Td and Oh sites. The peculiarity of the spinel crystal structure is that its composition can be easily modified without affecting the crystal structure based on the type of cation. The type of cation in the composition defines if the spinel has a normal or inverse form [1]. Based

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Stokes, Thomas N., Geoffrey D. Bromiley, G. Diego Gatta, Nicola Rotiroti, Nicola J. Potts, and Kate Saunders. "Cation distribution and valence in synthetic Al–Mn–O and Fe–Mn–O spinels under varying conditions." Mineralogical Magazine 82, no. 4 (2018): 975–92. http://dx.doi.org/10.1180/mgm.2018.109.

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ABSTRACTThe spinel-group minerals, found in a range of igneous rocks, are resistant to weathering and can incorporate several multivalent elements, meaning they have the potential to provide insight into the redox conditions of parental magmas. Naturally occurring spinel can contain varying quantities of Mn, an element which occurs terrestrially and extra-terrestrially as Mn2+, Mn3+, Mn4+ and Mn5+. However, a lack of information on the effects of oxygen fugacity ($f_{{\rm O}_{\rm 2}}$) on: (1) Mn valence state and cation distribution; and (2) on spinel-melt partitioning means that the potentia

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Metzger, E., D. Langlet, E. Viollier, et al. "Artificially induced migration of redox layers in a coastal sediment from the Northern Adriatic." Biogeosciences 11, no. 8 (2014): 2211–24. http://dx.doi.org/10.5194/bg-11-2211-2014.

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Abstract. Long-term experimental studies suggest that, under transient anoxic conditions, redox fronts within the sediment shift upwards, causing sequential rise and fall of benthic fluxes of reduced species (Mn(II), Fe(II) and S(-II)). Infaunal benthic organisms are associated with different redox fronts as micro-habitats and must be affected by such changes during natural hypoxia events. In order to document the geochemical evolution of the sediment during prolonged anoxia in the framework of an in situ experiment designed to mimic natural conditions, benthic chambers were deployed on the se

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Cassidy, John F., Rafaela C. de Carvalho, and Anthony J. Betts. "Use of Inner/Outer Sphere Terminology in Electrochemistry—A Hexacyanoferrate II/III Case Study." Electrochem 4, no. 3 (2023): 313–49. http://dx.doi.org/10.3390/electrochem4030022.

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Salts of hexacyanoferrate II/III anions have been widely used as redox couple probe molecules to determine the characteristics of electrode surfaces. Examples include the assessment of electrocatalysts for energy applications and electrocatalysts for the detection of biological or chemical species, as well as the determination of electrochemically active surface areas. An examination of the electrochemical literature, based largely on cyclic voltammetric investigations, reveals a wide range of peak separation and/or heterogeneous electron transfer rate constants, classified sometimes as inner

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Krishnan, Abiram, and Faisal M. Alamgir. "Role of Anions in Monoanion- and Polyanion-Based Cathode Materials for Lithium-Ion Batteries." ECS Meeting Abstracts MA2025-01, no. 1 (2025): 58. https://doi.org/10.1149/ma2025-01158mtgabs.

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The chemical environment of elements in a battery electrode provides valuable insights into the redox reactions occurring at the electrode during charge-discharge cycles. While past research has extensively investigated the role of cations in these reactions, the contribution of anions has received little to no attention. This is primarily due to the limited tools available to directly study anions. Core-hole spectroscopy, an X-ray-based method that generates electron core-holes, is well-suited for this purpose due to its element selectivity and ability to probe electrode materials during in-s

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Molina-Osorio, Andrés F., José A. Manzanares, Alonso Gamero-Quijano, and Micheál D. Scanlon. "Electrochemically controlled ion dynamics in porphyrin nanostructures." Journal of Physical Chemistry C 124, no. 33 (2020): 18346–55. https://doi.org/10.1021/acs.jpcc.0c04976.

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The dynamics of ion intercalation into solid matrices influences the performance of key components in most energy storage devices (Li-ion batteries, supercapacitors, fuel cells, etc.). Electrochemical methods provide key information on the thermodynamics and kinetics of these ion transfer processes but are restricted to matrices supported on electronically conductive substrates. In this article, the electrified liquid|liquid interface is introduced as an ideal platform to probe the thermodynamics and kinetics of reversible ion intercalation with non-electronically active matrices. Zinc(II) mes

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Soares, Rita B., Rita Manguinhas, João G. Costa, et al. "The Redox-Active Manganese(III) Porphyrin, MnTnBuOE-2-PyP5+, Impairs the Migration and Invasion of Non-Small Cell Lung Cancer Cells, Either Alone or Combined with Cisplatin." Cancers 15, no. 15 (2023): 3814. http://dx.doi.org/10.3390/cancers15153814.

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Manganese(III) porphyrin MnTnBuOE-2-PyP5+ (MnBuOE, BMX-001) is a third-generation redox-active cationic substituted pyridylporphyrin-based drug with a good safety/toxicity profile that has been studied in several types of cancer. It is currently in four phase I/II clinical trials on patients suffering from glioma, head and neck cancer, anal squamous cell carcinoma and multiple brain metastases. There is yet an insufficient understanding of the impact of MnBuOE on lung cancer. Therefore, this study aims to fill this gap by demonstrating the effects of MnBuOE on non-small cell lung cancer (NSCLC

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Connelly, Neil G., Bernhard Metz та A. Guy Orpen. "The stable radical cation [Mo2(µ-C8Me8)(η-C5H5)2]+: an intermediate in the redox activation of an alkyl C–H bond and a probe of metal–alkene bonding". J. Chem. Soc., Chem. Commun., № 18 (1994): 2109–10. http://dx.doi.org/10.1039/c39940002109.

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Lin, Feng. "(Battery Division Early Career Award Sponsored by Neware Technology Limited) Design, Synthesis, and Characterization of Cathode Microstructures in Lithium Batteries." ECS Meeting Abstracts MA2022-02, no. 3 (2022): 210. http://dx.doi.org/10.1149/ma2022-023210mtgabs.

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The propagation of redox reactions governs the electrochemical properties of battery materials and their critical performance metrics in battery cells. The recent research progress, especially aided by advanced analytical techniques, has revealed that incomplete and heterogeneous redox reactions prevail in many electrode materials. Advanced high-capacity cathode materials are mostly polycrystalline materials that exhibit complex charge distribution (the valence state distribution of the redox-active cations) due to the presence of numerous constituting grains and grain boundaries. The redox re

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Wu, Suozhu, and Bin Su. "7,7′,8,8′-Tetracyanoquinodimethane as a redox probe for studying cation transfer across the water/2-nitrophenyl octyl ether interface at three-phase junctions supported by carbon ink screen-printed electrodes." Journal of Electroanalytical Chemistry 656, no. 1-2 (2011): 237–42. http://dx.doi.org/10.1016/j.jelechem.2010.11.004.

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Anderson, Lawrence O., Adrian Xiao Bin Yong, Elif Ertekin, and Nicola H. Perry. "Modifying Crystal Symmetry and B-O Charge Distribution to Tailor Chemical Expansion in Mixed Conducting Perovskites." ECS Meeting Abstracts MA2022-01, no. 37 (2022): 1624. http://dx.doi.org/10.1149/ma2022-01371624mtgabs.

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The exchange of ions between a lattice and the gaseous phase makes mixed conducting oxides ideal for a range of electrochemical applications. Altering oxygen ion concentration is accompanied by a change to electronic species concentrations, and this influences electrical, chemical, kinetic, and mechanical properties. The stability of electrochemical devices like fuel cells and batteries can heavily rely on the mechanical response to changes in chemical defect concentrations. Under both dynamic and steady-state operation of these devices, large volume strains and strain mismatch at interfaces c

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