NDLI: Electrochemical and Spectroscopic (FTIR) Evidence of Conducting Polymer-Cu Ions Interaction.

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Electrochemical and Spectroscopic (FTIR) Evidence of Conducting Polymer-Cu Ions Interaction.

Content Provider	Europe PMC
Author	Salinas, Gerardo Frontana-Uribe, Bernardo A.
Editor	Bella, Federico
Copyright Year	2023
Abstract	In this work, we provide electrochemical and spectroscopic evidence of the conducting polymer-heavy metal ion interaction by comparing the electrochemical and spectroscopic behavior (FTIR) of two different conducting polymer-modified electrodes based on 3,4-alkoxythiophenes: 3,4-ethylenedioxythiophene (EDOT) and ortho-xylen-3,4-dioxythiophene (XDOT) during the potentiodynamic stripping of copper. By analyzing the electrochemical and spectroscopic results, it is possible to propose two different copper dissolution processes during the electrochemical stripping process, which depend on the conducting polymer used. With PEDOT matrix, stripping occurs in a two-step pathway, observed as two anodic peaks, involving the formation of the Cu⁺-PEDOT complex and the subsequent oxidation step of the Cu⁺ complex to release Cu²⁺ ions. On the other side, the experiments carried out let us propose the formation of a poorly stable Cu²⁺-PXDOT complex or a superficial mechanism for the Cu²⁺ release, characterized by a single stripping signal for this process. Thus, the incorporation of Cu ions into the matrix and the stripping release are intimately related to the chemical structure of the polymer used.
Journal	Molecules
Volume Number	28
DOI	10.3390/molecules28020569
PubMed Central reference number	PMC9865005
Issue Number	2
PubMed reference number	36677628
e-ISSN	14203049
Language	English
Publisher	Molecular Diversity Preservation International (MDPI)
Publisher Date	2023-01-06
Access Restriction	Open
Subject Keyword	3,4-alcoxy-thiophenes Fourier-transform infrared spectroscopy square wave voltammetry cyclic voltammetry stripping voltammetry polymer-ions interaction
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Medicine Chemistry Drug Discovery Pharmaceutical Science Analytical Chemistry Molecular Medicine Organic Chemistry

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