A1 Refereed original research article in a scientific journal
Correlation between conductance and mass changes during p-doping of 2-methoxynaphthalene films
Authors: Meana-Esteban B, Sundfors F, Espindola R, Kvarnstrom C, Heinze J, Ivaska A
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication year: 2008
Journal:: Electrochimica Acta
Journal name in source: ELECTROCHIMICA ACTA
Journal acronym: ELECTROCHIM ACTA
Volume: 53
Issue: 27
First page : 7988
Last page: 7994
Number of pages: 7
ISSN: 0013-4686
DOI: https://doi.org/10.1016/j.electacta.2008.06.004
Abstract
The redox response of 2-methoxynaphthalene films electrosynthesized in two different organic solvents, acetonitrile (ACN) and nitrobenzene (NB) has been studied by different in situ electrochemical techniques: the in situ conductance technique, electrochemical quartz crystal microbalance (EQCM) and electrochemical voltage spectroscopy (EVS). in situ measurements of conductance as a function of the potential during p-doping of 2-methoxynaphthalene films, electrosynthesized in TBAPF(6)-ACN and TBAPF(6)-NB, show that the conductance properties are strongly dependent on the solvent used during electrosynthesis, resulting in higher conductance values for films electrosynthesized in NB solutions. The EQCM technique has been used to correlate the frequency changes (mass changes) at the electrode Surface with conductance changes during p-doping of the different films. The molar mass of the species involved in the charging-discharging reactions has been estimated from the EQCM results. For the determination of the electrochemical bandgap of the two different films, cyclic voltammetry (CV) and EVS were applied. Films electrosynthesized in NB solutions have a lower value of the bandgap, (1.34 eV) than films electrosynthesized in ACN Solutions (2.00 eV). (C) 2008 Elsevier Ltd. All rights reserved.
The redox response of 2-methoxynaphthalene films electrosynthesized in two different organic solvents, acetonitrile (ACN) and nitrobenzene (NB) has been studied by different in situ electrochemical techniques: the in situ conductance technique, electrochemical quartz crystal microbalance (EQCM) and electrochemical voltage spectroscopy (EVS). in situ measurements of conductance as a function of the potential during p-doping of 2-methoxynaphthalene films, electrosynthesized in TBAPF(6)-ACN and TBAPF(6)-NB, show that the conductance properties are strongly dependent on the solvent used during electrosynthesis, resulting in higher conductance values for films electrosynthesized in NB solutions. The EQCM technique has been used to correlate the frequency changes (mass changes) at the electrode Surface with conductance changes during p-doping of the different films. The molar mass of the species involved in the charging-discharging reactions has been estimated from the EQCM results. For the determination of the electrochemical bandgap of the two different films, cyclic voltammetry (CV) and EVS were applied. Films electrosynthesized in NB solutions have a lower value of the bandgap, (1.34 eV) than films electrosynthesized in ACN Solutions (2.00 eV). (C) 2008 Elsevier Ltd. All rights reserved.
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