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Electrochem
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Surface Modification by Conductive Materials
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Surface Modification by Conductive Materials

A special issue of Electrochem (ISSN 2673-3293).

Deadline for manuscript submissions: closed (28 May 2022) | Viewed by 7634

Special Issue Editor

Prof. M'hamed Chahma

E-Mail Website
Guest Editor
Department of Chemistry and Biochemistry, Laurentian University, Sudbury, ON P3E 2C6, Canada
Interests: conducting polymers; surface modification; chiral electrodes; biosensors; radical chemistry; poly(radical thiophenes)

Special Issue Information

Dear Colleagues,

Nowadays, conducting materials play an important role in our lives. They can be used in sensors, photovoltaic cells, and energy storage. Their use as portative devices facilitates in situ measurements, with fast and efficient detection of specific target molecules. Moreover, conducting materials are a powerful tool for the design of necessary miniaturized technologies.
Surface modification using conducing materials presents several advantages such as easy derivatization, regeneration of the conducting surfaces, and ability to amplify electrochemical signals. Their high intrinsic conductivity and unique stability at both states resulting from the delocalization of the π-system lead to several applications in different research areas. The ability to control functionalities on conducting surfaces can also help in i) tuning the chemical and electrochemical properties of the modified surfaces and, thereby, ii) controlling the phenomena occurring at the interface of conducting materials. 
This Special Issue is geared toward the description of surface modifications using conducting materials and discussions of the optical and electrochemical properties of the modified conducting surfaces. 

Prof. M'hamed Chahma
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electrochem is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • conducting polymers
  • organic electrodes
  • chiral electrodes
  • energy storage
  • electrochemical sensors
  • batteries
  • nanoparticles

Published Papers (3 papers)

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Research

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15 pages, 2504 KiB  
Article
Electrodeposition and Characterization of Conducting Polymer Films Obtained from Carbazole and 2-(9H-carbazol-9-yl)acetic Acid
by Sophie Lakard, Emmanuel Contal, Karine Mougin and Boris Lakard
Electrochem 2022, 3(2), 322-336; https://doi.org/10.3390/electrochem3020022 - 17 Jun 2022
Cited by 1 | Viewed by 1742
Abstract
Electrochemical oxidation of electrolyte solutions containing carbazole (Cz) and 2-(9H-carbazol-9-yl)acetic acid (CzA) monomers was performed in acetonitrile solutions. Different Cz and CzA feed ratios were used to electrodeposit solid polymer films of various compositions, and to study the influence of the monomer ratio [...] Read more.
Electrochemical oxidation of electrolyte solutions containing carbazole (Cz) and 2-(9H-carbazol-9-yl)acetic acid (CzA) monomers was performed in acetonitrile solutions. Different Cz and CzA feed ratios were used to electrodeposit solid polymer films of various compositions, and to study the influence of the monomer ratio on the physicochemical properties (electroactivity, topography, adhesion, stiffness, wettability) of the polymer films. Thus, electrochemical oxidation led to the deposition of a solid film of micrometric thickness, but only for the solutions containing at least 30% of Cz. The proportion of Cz and CzA in the electrodeposited polymer films has little impact on the adhesion strength values measured by AFM. On the contrary, this proportion significantly modifies the stiffness of the films. Indeed, the stiffness of the polymer films varies from 9 to 24 GPa depending on the monomer ratio, which is much lower than the value obtained for unmodified polycarbazole (64 GPa). This leads to the absence of cracks in the films, which all have a fairly homogeneous globular structure. Moreover, among the different polymer films obtained, those prepared from 70:30 and 50:50 ratios in Cz:CzA monomer solutions seem to be the most interesting because these green films are conductive, thick, low in stiffness, do not show cracks and are resistant to prolonged immersion in water. Full article
(This article belongs to the Special Issue Surface Modification by Conductive Materials)
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Review

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15 pages, 1967 KiB  
Review
Electrochemical Analysis of Heavy Metal Ions Using Conducting Polymer Interfaces
by Gerardo Salinas and Bernardo A. Frontana-Uribe
Electrochem 2022, 3(3), 492-506; https://doi.org/10.3390/electrochem3030034 - 26 Aug 2022
Cited by 10 | Viewed by 2545
Abstract
Conducting polymers (CPs) are highly conjugated organic macromolecules, where the electrical charge is transported in intra- and inter-chain pathways. Polyacetylene, polythiophene and its derivatives, polypyrrole and its derivatives, and polyaniline are among the best-known examples. These compounds have been used as electrode modifiers [...] Read more.
Conducting polymers (CPs) are highly conjugated organic macromolecules, where the electrical charge is transported in intra- and inter-chain pathways. Polyacetylene, polythiophene and its derivatives, polypyrrole and its derivatives, and polyaniline are among the best-known examples. These compounds have been used as electrode modifiers to gain sensitivity and selectivity in a large variety of analytical applications. This review, after a brief introduction to the electrochemistry of CPs, summarizes the application of CPs’ electrode interfaces towards heavy metals’ detection using potentiometry, pulse anodic stripping voltammetry, and alternative non-classical electrochemical methods. Full article
(This article belongs to the Special Issue Surface Modification by Conductive Materials)
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12 pages, 3735 KiB  
Review
Doped Polythiophene Chiral Electrodes as Electrochemical Biosensors
by M’hamed Chahma
Electrochem 2021, 2(4), 677-688; https://doi.org/10.3390/electrochem2040042 - 20 Dec 2021
Cited by 2 | Viewed by 2766
Abstract
π-conducting materials such as chiral polythiophenes exhibit excellent electrochemical stability in doped and undoped states on electrode surfaces (chiral electrodes), which help tune their physical and electronic properties for a wide range of uses. To overcome the limitations of traditional surface immobilization methods, [...] Read more.
π-conducting materials such as chiral polythiophenes exhibit excellent electrochemical stability in doped and undoped states on electrode surfaces (chiral electrodes), which help tune their physical and electronic properties for a wide range of uses. To overcome the limitations of traditional surface immobilization methods, an alternative pathway for the detection of organic and bioorganic targets using chiral electrodes has been developed. Moreover, chiral electrodes have the ability to carry functionalities, which helps the immobilization and recognition of bioorganic molecules. In this review, we describe the use of polythiophenes for the design of chiral electrodes and their applications as electrochemical biosensors. Full article
(This article belongs to the Special Issue Surface Modification by Conductive Materials)
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