Biosensors in 2023

A special issue of Biosensors (ISSN 2079-6374).

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 2837

Special Issue Editor


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Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
Interests: immobilization procedure of biomolecules; protein–DNA complexes; aptamer; enzymatic sensors; thick-film technology; nanodispensing technologies; micro-flow systems; carbon nanotubes; nanoparticles; nanocomposite polymers; molecular imprinted polymers; protein-polymer conjugates
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Special Issue Information

Dear Colleagues,

In 2022, the Impact Factor of Biosensors increased to 5.743, with the journal ranking in Q1 (14th of 87) in the "Chemistry, Analytical" category, Q1 (8th of 64) in the "Instruments & Instrumentation" category, and Q2 (52nd of 109) in the "Nanoscience & Nanotechnology" category.

The past year was certainly successful, and we aim to continue to build on this success in 2023, with an even higher Impact Factor. To that end, a new Special Issue entitled “Biosensors in 2023” is being launched. This Special Issue will serve as a collection of high-quality papers in open access form written by our Editorial Board Members, previous authors and reviewers, and researchers invited by the Editorial Board Members and the Editorial Office.

Prof. Dr. Giovanna Marrazza
Guest Editor

New Year Special Issue Series

This Special Issue is a part of Biosensors ’s New Year Special Issue Series. The series reflects on the achievements, scientific progress, and “hot topics” of the previous year in the journal. Submissions of articles whose lead authors are our Editorial Board Members are highly encouraged. However, we welcome articles from all authors.

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Published Papers (1 paper)

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Research

16 pages, 2120 KiB  
Article
The Development and Evaluation of Reagentless Glucose Biosensors Using Dendritic Gold Nanostructures as a Promising Sensing Platform
by Natalija German, Anton Popov and Almira Ramanaviciene
Biosensors 2023, 13(7), 727; https://doi.org/10.3390/bios13070727 - 13 Jul 2023
Cited by 3 | Viewed by 1756
Abstract
Reagentless electrochemical glucose biosensors were developed and investigated. A graphite rod (GR) electrode modified with electrochemically synthesized dendritic gold nanostructures (DGNs) and redox mediators (Med) such as ferrocenecarboxylic acid (FCA), 1,10-phenathroline-5,6-dione (PD), N,N,N′,N′-tetramethylbenzidine (TMB) or tetrathiafulvalene (TTF) in combination with glucose oxidase (GOx) [...] Read more.
Reagentless electrochemical glucose biosensors were developed and investigated. A graphite rod (GR) electrode modified with electrochemically synthesized dendritic gold nanostructures (DGNs) and redox mediators (Med) such as ferrocenecarboxylic acid (FCA), 1,10-phenathroline-5,6-dione (PD), N,N,N′,N′-tetramethylbenzidine (TMB) or tetrathiafulvalene (TTF) in combination with glucose oxidase (GOx) (GR/DGNs/FCA/GOx, GR/DGNs/PD/GOx, GR/DGNs/TMB/GOx, or GR/DGNs/TTF/GOx) were developed and electrochemically investigated. A biosensor based on threefold-layer-by-layer-deposited PD and GOx (GR/DGNs/(PD/GOx)3) was found to be the most suitable for the determination of glucose. To improve the performance of the developed biosensor, the surface of the GR/DGNs/(PD/GOx)3 electrode was modified with polypyrrole (Ppy) for 5 h. A glucose biosensor based on a GR/DGNs/(PD/GOx)3/Ppy(5 h) electrode was characterized using a wide linear dynamic range of up to 39.0 mmol L−1 of glucose, sensitivity of 3.03 µA mM−1 cm−2, limit of detection of 0.683 mmol L−1, and repeatability of 9.03% for a 29.4 mmol L−1 glucose concentration. The Ppy-based glucose biosensor was characterized by a good storage stability (τ1/2 = 9.0 days). Additionally, the performance of the developed biosensor in blood serum was investigated. Full article
(This article belongs to the Special Issue Biosensors in 2023)
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