Carmen Serna

Universidad Rovira i Virgili

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ÁM

Á. Molina

Universidad de Murcia

Joaquı́n González

Universidad de Murcia

Manuela López‐Tenés

Universidad de Murcia

Francisco Martínez‐Ortiz

Universidad de Murcia

E. Torralba

Institut de Chimie et des Matériaux Paris-Est

J. Ortuño

Universidad de Murcia

Marién M. Moreno

Universidad Católica San Antonio de Murcia

Luis Camacho

University of Córdoba

Eduardo Laborda

Universidad de Murcia

Juan José Ruíz Ruíz

Universidad de Jaén

Cooperative Institutions

Universidad de Murcia

University of Oxford

Universidad Rovira i Virgili

Institut d'Investigació Sanitària Pere Virgili

Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas

Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition

Instituto de Salud Carlos III

Rede de Química e Tecnologia

Centro Médico Sanitas Murcia

Universidad Autónoma de Madrid

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Analytical solution for the facilitated ion transfer at the interface between two immiscible electrolyte solutions via successive complexation reactions in any voltammetric technique: Application to square wave voltammetry and cyclic voltammetry

Electrochimica Acta (2013)

Á. Molina E. Torralba Carmen Serna J. Ortuño

ITIES

Square wave

Diffusion layer

Supporting electrolyte

10.1016/j.electacta.2013.05.080

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Citations (37)

Study of Higher Order Electrochemical Reactions Involving an Insoluble Product with Several Chronopotentiometric Techniques

Bulletin des Sociétés Chimiques Belges (1991)

Á. Molina Manuela López‐Tenés Carmen Serna José Albaladejo

Abstract The general theory for higher order electrochemical reactions involving an insoluble product at the DME, by using different chronopotentiometric techniques, is presented. The expressions corresponding to a null blank period, to an expanding plane electrode and to spherical and plane stationary electrodes, can be deduced as particular cases of the equations obtained in this work. The particular features of the potential‐time curves are discussed and methods for determining kinetic parameters and the conditional (formal) potential are proposed.

Blank

10.1002/bscb.19911001001

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Citations (0)

Ion Transfer Square Wave Voltammetry of Ionic Liquid Cations with a Solvent Polymeric Membrane Ion Sensor

Electroanalysis (2009)

J. Ortuño Carmen Serna Á. Molina E. Torralba

Abstract Square wave voltammetry (SWV) with a solvent polymeric membrane ion sensor has been applied to study the ion transfer of several ionic liquid cations, from water to a poly(vinyl chloride) membrane plasticized with 2‐nitrophenyl octyl ether. The study has mainly been focused on dialkylimidazolium and alkylpyridinium cations. The experimental voltammograms obtained are in good agreement with the theoretical predictions. The standard ion transfer potentials of the ionic liquid cations have been obtained and the values found have been used to draw some conclusions on the relationship between structure and lipophilicity. Also, a relationship between the toxicity and the ion transfer potentials of dialkylimidazolium homologues has been found.

Square wave

Lipophilicity

10.1002/elan.200904684

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Citations (16)

Steady state voltammetry of charge transfer processes with nonunity electrode reaction orders

Journal of Electroanalytical Chemistry (2021)

Joaquı́n González Eduardo Laborda Carmen Serna E. Torralba Á. Molina

Charge transfer coefficient

Standard electrode potential

Reversible reaction

Reaction rate

10.1016/j.jelechem.2021.115206

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Citations (2)

Derivative and Differential Voltammetry and Reciprocal Derivative Chronopotentiometry Identical Behavior Verification for Electrode Reversible Processes

Journal of The Electrochemical Society (2000)

Joaquı́n González Á. Molina Manuela López‐Tenés Carmen Serna

In the present paper, we carry out the experimental verification of the analogy between the responses obtained in derivative and differential voltammetric techniques and those corresponding to a new modality of the reciprocal derivative chronopotentiometric techniques using a programmed current of the form with u≥ −1/2. Identical information can be obtained from derivative voltammetry and reciprocal derivative chronopotentiometry although the experimental application of the latter is simpler and signals obtained are less noise influenced due to the use of programmed current. In order to show the above mentioned analogy in the case of reversible electrode processes, we have carried out an experimental study of the systems in (pH 4.49) at a static mercury drop electrode and ferrocene in at a Pt electrode. © 2000 The Electrochemical Society. All rights reserved.

Derivative (finance)

Reciprocal

10.1149/1.1393916

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Citations (28)

Derivation of a general theory for reversible multistep electrode processes in voltammetry with constant potential at spherical electrodes

Electrochemistry Communications (2000)

Á. Molina Carmen Serna Manuela López‐Tenés R. Chicón

Constant (computer programming)

10.1016/s1388-2481(00)00019-9

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Citations (13)

Application of Cyclic Chronopotentiometry to the Study of Slow Charge Transfer Reactions at the DME and the SMDE

Collection of Czechoslovak Chemical Communications (1996)

Á. Molina Joaquı́n González Carmen Serna

In this work we apply cyclic chronopotentiometry to analyze charge transfer reactions at spherical electrodes, highlighting the influence of electrode curvature and the formation of amalgam on the potential-time response. Moreover, methods are proposed for determining the formal potential and the kinetic parameters of the electrode reaction. Equations obtained for the dropping mercury electrode are transformed to those corresponding to a static mercury drop electrode and a plane electrode.

Mercury

Standard electrode potential

Voltage drop

10.1135/cccc19961432

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Citations (3)

Pulse polarography

Journal of Electroanalytical Chemistry (1981)

J. Gálvez Á. Molina Carmen Serna

Polarography

Limiting

Limiting current

Diffusion current

10.1016/s0022-0728(81)80297-5

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Citations (16)

Detection of interaction between redox centers of surface confined molecules by means of Cyclic Voltammetry and Differential Staircase Voltcoulommetry

Journal of Electroanalytical Chemistry (2011)

Joaquı́n González Á. Molina Carmen M. Soto Carmen Serna

10.1016/j.jelechem.2011.10.013

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Citations (15)

Study of Multicenter Redox Molecules with Square Wave Voltammetry

The Journal of Physical Chemistry C (2007)

Á. Molina Marién M. Moreno Carmen Serna Manuela López‐Tenés Joaquı́n González

An analytical explicit expression for the current obtained with the well-known multipulse technique square wave voltammetry (SWV), corresponding to the reversible reduction/oxidation of multicenter redox molecules whose centers may or may not interact, has been given in Appendix. This equation is valid for spherical electrodes of any size, including planar electrodes (r0 → ∞) and ultramicroelectrodes (r0 → 0) as limit cases, and it also permits us to deduce the behavior of these processes at the limit situations corresponding to small and great square wave amplitudes. For the sake of simplicity, we have analyzed the behavior of bicenter molecules, ranging from noninteracting centers, for which the square wave current obtained is twice that corresponding to a single E mechanism, to strongly interacting centers which present two successive and well-separated signals of one electron each. The results obtained here are easily extendable to molecules with any number of redox centers. The theoretical predictions have been tested with two experimental systems, quinizarine in acetonitrile and pyrazine in aqueous acid media, and an excellent agreement between theory and experiments is found.

Square wave

Pyrazine

Square (algebra)

10.1021/jp073848j

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Citations (35)