420 nmol cm(-2)) at high scan rates. Redox cycling in monomer-free electrolyte shows a voltammetric signature that responds, via interaction with the pseudo-crown ether receptor sites, to the presence of Li+, K+, Mg2+ and Ba2+ ions in solution. The most prominent change is associated with the first anodic peak in the i-E signature. For each of the metal ions considered, this peak potential responds logarithmically to concentration in a manner that varies with individual complexed cation and film thickness and to an extent greater than predicted by the Nernst equation. The film characteristics offer some analytical promise, including a trade-off between sensitivity and dynamic range and signal amplification, possibly due to supramolecular effects." /> 420 nmol cm(-2)) at high scan rates. Redox cycling in monomer-free electrolyte shows a voltammetric signature that responds, via interaction with the pseudo-crown ether receptor sites, to the presence of Li+, K+, Mg2+ and Ba2+ ions in solution. The most prominent change is associated with the first anodic peak in the i-E signature. For each of the metal ions considered, this peak potential responds logarithmically to concentration in a manner that varies with individual complexed cation and film thickness and to an extent greater than predicted by the Nernst equation. The film characteristics offer some analytical promise, including a trade-off between sensitivity and dynamic range and signal amplification, possibly due to supramolecular effects."/>
 
Ion recognition properties of poly[Cu(3-MeOsalpd)] films
authors Kiersztyn, I; Neto, L; Carneiro, A; Tedim, J; Freire, C; Hillman, AR
nationality International
journal JOURNAL OF SOLID STATE ELECTROCHEMISTRY
author keywords Electroactive polymer; Thin film; Salen; Sensor; Ion recognition; Pseudo-crown ether
keywords POLYMER-FILMS; CROWN-ETHER; MODIFIED ELECTRODES; SPECTROELECTROCHEMICAL CHARACTERIZATION; ELECTROCHEMICAL PROPERTIES; MOLECULAR RECOGNITION; POLYTHIOPHENES; SALEN; COORDINATION; SENSORS
abstract Poly[Cu(3-MeOsalpd)] films with good physical, chemical and electrochemical stability may be potentiodynamically electrodeposited with high deposition efficiency from acetonitrile solutions of the monomer. Comparative coulometric assays with the Ni-based analogue show that the metal in the salen motif does play a role in the electronic structure of the polymer, but that the electroactive response is ligand (not metal) based. The dynamics of redox switching are ultimately limited by coupled electron/counter ion diffusion, but this process is sufficiently rapid that it influences the voltammetric response only for thick films (I" > 420 nmol cm(-2)) at high scan rates. Redox cycling in monomer-free electrolyte shows a voltammetric signature that responds, via interaction with the pseudo-crown ether receptor sites, to the presence of Li+, K+, Mg2+ and Ba2+ ions in solution. The most prominent change is associated with the first anodic peak in the i-E signature. For each of the metal ions considered, this peak potential responds logarithmically to concentration in a manner that varies with individual complexed cation and film thickness and to an extent greater than predicted by the Nernst equation. The film characteristics offer some analytical promise, including a trade-off between sensitivity and dynamic range and signal amplification, possibly due to supramolecular effects.
publisher SPRINGER
issn 1432-8488
year published 2012
volume 16
issue 9
beginning page 2849
ending page 2860
digital object identifier (doi) 10.1007/s10008-012-1698-3
web of science category Electrochemistry
subject category Electrochemistry
unique article identifier WOS:000307754900002
  ciceco authors

João Tedim

Professor Auxiliar
  impact metrics
journal analysis (jcr 2019):
journal impact factor 2.646
5 year journal impact factor 2.37
category normalized journal impact factor percentile 50
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