Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.0
3.7
Journals
Chemosensors
Special Issues
Analytical (Chem and Bio)sensors Based on EIS Measurements
share announcement

Analytical (Chem and Bio)sensors Based on EIS Measurements

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Applied Chemical Sensors".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 14474

Special Issue Editor

Prof. Dr. Maria Grzeszczuk

E-Mail Website
Guest Editor
Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
Interests: conducting polymers based electrode materials; nanostructures; amperometric/voltamperometric sensors; impedimetric sensors

Special Issue Information

Electrochemical impedance spectroscopy (EIS) has been recognized as a method of overall characterization of electrode processes, faradaic and non-faradaic, providing broad time scale measurement. Research and development in analytical sensors area, focused on electrode materials, solvents and samples, usually take the advantage in the EIS examination. However, EIS with numerous data processing possibilities and/or data formats often can deliver superior observables for analytical purposes over dc currents recorded in amperometry/voltammetry, including square wave voltammetry and pulse voltammetry. This planned Special Issue of Chemosensors is intended to cover both aspects of EIS applications in analytical (chem and bio) sensors studies as a characterization tool and a method of analysis.

Prof. Dr. Maria Grzeszczuk
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. Chemosensors is an international peer-reviewed open access monthly 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 2700 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

  • models of electrochemical ac impedance
  • EIS data formats
  • faradaic and non-faradaic ac impedance measurements
  • impedance, admittance, capacitance, modulus, electric permittivity
  • EIS observables of analytical importance
  • EIS applications for characterization of analytical sensors
  • EIS applications providing new observables for analytical sensors
  • chemical sensors
  • biosensors

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

10 pages, 1752 KiB  
Article
Impedimetric Detection of Albumin-Bound Fatty Acids Using Graphene Oxide Electrode
by Zihni Onur Uygun, Soner Duman and Ismail Oran
Chemosensors 2021, 9(9), 240; https://doi.org/10.3390/chemosensors9090240 - 26 Aug 2021
Cited by 2 | Viewed by 1868
Abstract
The fatty acid/albumin (FA/Alb) molar ratio is ≤1 in healthy subjects; this ratio can reach 3–4 in patients with acute myocardial ischemia. We describe the spontaneous desorption–adsorption kinetics of FAs from albumin to a graphene electrode at neutral pH. Albumin-depleted human serum was [...] Read more.
The fatty acid/albumin (FA/Alb) molar ratio is ≤1 in healthy subjects; this ratio can reach 3–4 in patients with acute myocardial ischemia. We describe the spontaneous desorption–adsorption kinetics of FAs from albumin to a graphene electrode at neutral pH. Albumin-depleted human serum was prepared via ultrafiltration and then mixed with defatted human albumin and sodium oleate at different FA/Alb molar ratios, at a final albumin concentration of 0.6 mM. A commercially available screen-printed graphene oxide (GO)-modified carbon electrode was used for the electrochemical experiments. Frequency-ranged Faradaic electrochemical impedance spectroscopy (EIS) and a single-frequency non-Faradaic impedance measure (chronoimpedance) were used to derive the desorption–adsorption kinetics. The surface of the GO electrode was finally evaluated with the aid of X-ray photoelectron spectroscopy (XPS). With the chronoimpedance experiment, the measured impedance increased accordingly to the FA/Alb ratios. The frequency-ranged EIS showed good linearity between the impedance and the FA/Alb ratio, with a limit of quantification value of 1.06. XPS surface analysis revealed that the FA was adsorbed onto the electrode, with the amount of the adsorbed FA proportional to the FA/Alb ratio. The electrochemical method applied on this peculiar desorption–adsorption kinetics of FAs has the ability to differentiate serum having excess FAs. Full article
(This article belongs to the Special Issue Analytical (Chem and Bio)sensors Based on EIS Measurements)
►▼ Show Figures

Figure 1

12 pages, 3269 KiB  
Article
Impedimetric Biosensor Based on a Hechtia argentea Lectin for the Detection of Salmonella spp.
by Jorge Lopez-Tellez, Irais Sanchez-Ortega, Claudia Teresa Hornung-Leoni, Eva Maria Santos, Jose Manuel Miranda and Jose Antonio Rodriguez
Chemosensors 2020, 8(4), 115; https://doi.org/10.3390/chemosensors8040115 - 18 Nov 2020
Cited by 7 | Viewed by 3483
Abstract
A sensitive electrochemical detection method for Salmonella spp. was described, based on the use of Hechtia argentea lectin immobilised on a screen-printed gold electrode. The lectin was extracted from Hechtia argentea, a plant belonging to the Bromeliaceae family. The lectin with molecular [...] Read more.
A sensitive electrochemical detection method for Salmonella spp. was described, based on the use of Hechtia argentea lectin immobilised on a screen-printed gold electrode. The lectin was extracted from Hechtia argentea, a plant belonging to the Bromeliaceae family. The lectin with molecular weight near 27.4 kDa showed selectivity towards D-mannose, contained on the lipopolysaccharide cell wall of Salmonella spp. Carbohydrate selectivity of the lectin was measured as a change in impedance with respect to concentration. The binding of the bacteria to the biosensor surface increased impedance with increasing concentrations of Salmonella spp., achieving a linear range of detection of 15–2.57 × 107 CFU mL−1, with a limit of detection of 5 CFU mL−1. Increases in impedance were measured using electrochemical impedance spectroscopy and analysed using Nyquist plots. The biosensor was applied in analysis of hen egg samples, and the results were consistent with those obtained using the official analysis methodology. Full article
(This article belongs to the Special Issue Analytical (Chem and Bio)sensors Based on EIS Measurements)
►▼ Show Figures

Graphical abstract

Review

Jump to: Research

21 pages, 5499 KiB  
Review
Electrochemical Impedance Spectroscopy on 2D Nanomaterial MXene Modified Interfaces: Application as a Characterization and Transducing Tool
by Juvissan Aguedo, Lenka Lorencova, Marek Barath, Pavol Farkas and Jan Tkac
Chemosensors 2020, 8(4), 127; https://doi.org/10.3390/chemosensors8040127 - 7 Dec 2020
Cited by 44 | Viewed by 8507
Abstract
This review presents the basic characteristics of MXene, a novel 2D nanomaterial with many outstanding properties applicable to electrochemical sensing and biosensing. The second part deals with electrochemical impedance spectroscopy (EIS) and its beneficial features applicable to ultrasensitive electrochemical sensing and label-free biosensing. [...] Read more.
This review presents the basic characteristics of MXene, a novel 2D nanomaterial with many outstanding properties applicable to electrochemical sensing and biosensing. The second part deals with electrochemical impedance spectroscopy (EIS) and its beneficial features applicable to ultrasensitive electrochemical sensing and label-free biosensing. The main part of the review presents recent advances in the integration of MXene to design electrochemical interfaces. EIS was used to evaluate the effect of anodic potential on MXene and the effect of the MXene preparation route and for characterization of MXene grafted with polymers. It also included the application of EIS as the main transducing tool for antibody- and aptamer-based biosensors or biosensors integrating molecularly imprinted polymers. Full article
(This article belongs to the Special Issue Analytical (Chem and Bio)sensors Based on EIS Measurements)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop