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Chemosensors
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Nanomaterials, Nanoreagents, Nanostructures and Nanolight Sources for Designing Novel Chemical...
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Nanomaterials, Nanoreagents, Nanostructures and Nanolight Sources for Designing Novel Chemical and Biochemical Sensors

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Electrochemical Devices and Sensors".

Deadline for manuscript submissions: closed (10 December 2021) | Viewed by 13431

Special Issue Editor

Prof. Dr. Edward P. C. Lai

E-Mail Website
Guest Editor
Department of Chemistry, Carleton University, Ottawa, ON K1S 5B6, Canada
Interests: capillary electrophoresis; electroanalytical chemistry; environmental analysis; mass spectrometry; molecular spectroscopy; pharmaceutical analysis; mercury analysis; nanoparticle analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The design of chemical sensors often requires a comprehension of all of the reagents that are crucial to successful development and validation. These reagents may be chromogenic, derivatizing, fluorogenic, imaging, reactive, redox, and even specific in their chemical functionality. A critical choice of the most appropriate reagent can significantly help the manufacturing engineer or research scientist with cost-effective production and valid applications. Suitable reagents may span across biochemical, inorganic, organic, and polymeric substances that are either commercially available for immediate use or synthetically facile to prepare in the lab. Proper use of each reagent may be governed by pH, temperature, solvent, redox, enzyme, light, ultrasound, magnetic field, and safety concerns. Both logical deduction and creative thinking can bring about novelty in a unique way so that reagents may work together synergistically for a target analyte.  

 

This Special Issue of Chemosensors focuses on the latest advances in chemical reagents that are beneficial to new sensor design and development. We look forward to receiving your new manuscripts in the upcoming weeks for fun of reporting as well as joy of sharing! Topics of interest include but are not limited to the following:

  • Nanoreagents
  • Nanomaterials
  • Nanostructures
  • Nanolight sources
  • Electrochemical impedance spectroscopy
  • Surface acoustic waves
  • Molecularly imprinted polymers
  • Surface plasmon resonance
  • Molecular fluorescence
  • Fiber

Prof. Dr. Edward P. C. Lai
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

  • Nanoreagents
  • Nanomaterials
  • Nanostructures
  • Nanolight sources
  • Electrochemical impedance spectroscopy
  • Surface acoustic waves
  • Molecularly imprinted polymers
  • Surface plasmon resonance
  • Molecular fluorescence
  • Fiber

Published Papers (4 papers)

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Editorial

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4 pages, 169 KiB  
Editorial
Chemical Reagents for Sensor Design and Development
by Edward P. C. Lai
Chemosensors 2020, 8(2), 35; https://0-doi-org.brum.beds.ac.uk/10.3390/chemosensors8020035 - 25 May 2020
Viewed by 2011
Abstract
The combination of selective chemical reagents with sensitive physical transducers can often bring about new sensor designs and novel device construction that are capable of quantitative analysis of various sample matrices to determine important ionic or molecular analytes [...] Full article
(This article belongs to the Special Issue Nanomaterials, Nanoreagents, Nanostructures and Nanolight Sources for Designing Novel Chemical and Biochemical Sensors)

Research

Jump to: Editorial, Review

18 pages, 7809 KiB  
Article
Electrochemical Oxidation of Sodium Metabisulfite for Sensing Zinc Oxide Nanoparticles Deposited on Graphite Electrode
by Kailai Wang and Edward P. C. Lai
Chemosensors 2022, 10(4), 145; https://0-doi-org.brum.beds.ac.uk/10.3390/chemosensors10040145 - 13 Apr 2022
Cited by 2 | Viewed by 2773
Abstract
A novel concept was successfully evaluated for the electrochemical quantitative analysis of zinc oxide nanoparticles originally in aqueous suspension. An aliquot of the suspension was first placed on the working area of a graphite screen-printed electrode and the water was evaporated to form [...] Read more.
A novel concept was successfully evaluated for the electrochemical quantitative analysis of zinc oxide nanoparticles originally in aqueous suspension. An aliquot of the suspension was first placed on the working area of a graphite screen-printed electrode and the water was evaporated to form a dry deposit of ZnO nanoparticles. Deposition of ZnO nanoparticles on the electrode was confirmed by energy-dispersive X-ray spectroscopy. A probe solution containing KCl and sodium metabisulfite was added on top of the deposit for electrochemical analysis by cyclic voltammetry. The anodic peak current (Ipa) for metabisulfite, measured at +1.2 V vs. Ag/AgCl, afforded a lower detection limit of 3 µg and exhibited a linear dependence on the mass of deposited ZnO nanoparticles up to 15 μg. Further, the current increased nonlinearly until it reached a saturation level beyond 60 μg of ZnO nanoparticles. The diffusion coefficient of metabisulfite anions through the electrical double layer was determined to be 4.16 × 10−5 cm2/s. Apparently the surface reactivity of ZnO originated from the oxide anion rather than the superoxide anion or the hydroxyl radical. Enhancement of the metabisulfite oxidation peak current can be developed into a sensitive method for the quantitation of ZnO nanoparticles. Full article
(This article belongs to the Special Issue Nanomaterials, Nanoreagents, Nanostructures and Nanolight Sources for Designing Novel Chemical and Biochemical Sensors)
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13 pages, 16575 KiB  
Article
DFO@EVOH and 3,4-HP@EVOH: Towards New Polymeric Sorbents for Iron(III)
by Giancarla Alberti, Camilla Zanoni, Lisa Rita Magnaghi, Maria Amélia Santos, Valeria Marina Nurchi and Raffaela Biesuz
Chemosensors 2020, 8(4), 111; https://0-doi-org.brum.beds.ac.uk/10.3390/chemosensors8040111 - 05 Nov 2020
Cited by 12 | Viewed by 2618
Abstract
The paper presents the synthesis and preliminary characterization of two novel solid-phase sorbents for iron(III), resulting from the functionalization of ethylene-vinyl alcohol copolymer (EVOH) with deferoxamine, DFO (DFO@EVOH), and a novel tripodal 3-hydroxy-4-pyridinone, named 3,4-HP (3,4-HP@EVOH). DFO and 3,4-HP have been covalently bonded [...] Read more.
The paper presents the synthesis and preliminary characterization of two novel solid-phase sorbents for iron(III), resulting from the functionalization of ethylene-vinyl alcohol copolymer (EVOH) with deferoxamine, DFO (DFO@EVOH), and a novel tripodal 3-hydroxy-4-pyridinone, named 3,4-HP (3,4-HP@EVOH). DFO and 3,4-HP have been covalently bonded to EVOH, using carbonyldiimidazole as a coupling agent. Before their use as Fe(III) sorbents, they were warm-pressed to obtain a thin film. Polymers have been characterized by conventional physico-chemical techniques; furthermore, the sorption properties towards Fe(III) were investigated. The physico-chemical characterization of the new solid-state devices demonstrates the effective linkage of the two receptors on the polymeric support. Despite a relatively low sorption capacity for both materials, the stoichiometry and the complexation constants of Fe(III)/DFO@EVOH and Fe(III)/3,4-HP@EVOH are in pretty good agreement with those obtained for the same ligands in aqueous solutions. Full article
(This article belongs to the Special Issue Nanomaterials, Nanoreagents, Nanostructures and Nanolight Sources for Designing Novel Chemical and Biochemical Sensors)
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Review

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23 pages, 1535 KiB  
Review
Current State of Laser-Induced Fluorescence Spectroscopy for Designing Biochemical Sensors
by Adam Thomas Taylor and Edward P. C. Lai
Chemosensors 2021, 9(10), 275; https://0-doi-org.brum.beds.ac.uk/10.3390/chemosensors9100275 - 27 Sep 2021
Cited by 19 | Viewed by 5544
Abstract
Laser-induced fluorescence (LIF) has been a valuable analytical technique since the 1970s that has only been made more useful through advances in other scientific fields such as biochemistry. Moreover, advances in laser and detector technology have seen a decrease in LIF detector costs [...] Read more.
Laser-induced fluorescence (LIF) has been a valuable analytical technique since the 1970s that has only been made more useful through advances in other scientific fields such as biochemistry. Moreover, advances in laser and detector technology have seen a decrease in LIF detector costs and an increase in their ease of use. These changes have allowed for LIF technology to be widely adopted for various sensor designs in combination with advanced instruments. With advances in biochemistry necessitating the detection of complex metabolites, labelling with fluorescent chemical reagents may be necessary to improve detection sensitivity. Furthermore, advances made in fluorescent labeling technologies have allowed for the use of LIF in the detection of nanoparticles as well as for imaging techniques using nanoparticles as signal amplifiers. This technology has become invaluable in the detection of environmental pollutants, monitoring of biological metabolites, biological imaging, and cancer diagnosis, making it one of the most valuable analytical science techniques currently available. Full article
(This article belongs to the Special Issue Nanomaterials, Nanoreagents, Nanostructures and Nanolight Sources for Designing Novel Chemical and Biochemical Sensors)
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