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Polymeric Chemosensors
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Polymeric Chemosensors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 15661

Special Issue Editors

Prof. Dr. José Miguel García

E-Mail Website
Guest Editor
Polymer Research Group, Faculty of Science, University of Burgos, 09001 Burgos, Spain
Interests: polymers; polymer sensors; high performance polymers; polymers for advanced applications; design and synthesis of advanced polymers; monomers; monomer synthesis; chemical sensors; supramolecular chemistry
Special Issues, Collections and Topics in MDPI journals
Dr. José Antonio Reglero Ruiz

E-Mail Website
Guest Editor
Polymer Research Group, Faculty of Science, University of Burgos, 09001 Burgos, Spain
Interests: polymers; micro and nanocellular polymers; design, synthesis and characterization of high performance polymers; nanoporous sensory polymers; polymer foaming processes
Special Issues, Collections and Topics in MDPI journals
Dr. Saúl Vallejos Calzada

E-Mail Website
Guest Editor
Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain
Interests: smart polymers; sensory polymers; detection of target species; colorimetry; fluorimetry; polymers for advanced applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The chemosensory research field was born with the first developments in supramolecular chemistry, i.e., host/guest chemical interactions, in the decade of the 60s. Thus, we are now celebrating almost 70 years of intense investigations in this quick-evolving field. Therefore, chemosensors are molecules which respond selectively to target molecules (analytes), then providing useful information about different properties of the environment, such as chemical composition, pH, temperature or humidity. This response is usually quantifiable and measurable by transducing this chemical interaction to physic-chemical properties (e.g.: change of colour, UV/Vis sorption and desorption processes, or electrical resistivity variation). A further development in the field is the preparation of intelligent polymers that recognise target species giving rise to a variation in a macroscopic property, the so called polymeric chemosensors. These new smart polymers can be used in many different sectors such as civil and military security, in environmental application, in industry, or detection of biological compounds in medical applications.

In the last years, the interest on these polymer-based chemical sensors has increased exponentially due to some key advantages over low molecular mass chemosensors, usually organic molecules: lack of migration of sensory motifs when they are anchored to the polymer backbone; easy of design of the main polymer backbone to be hydrophilic for working in water, even if the sensory motifs are highly hydrophobic; easy transformability into different shapes, such as films, fibres or coatings, which widens greatly their applicability in present and future sensory devices, and the possibility to sense target species in air of complex atmospheres.

The Special Issue we present here is focused to the presentation, critical discussion and dissemination of the last research results in this exciting field. Many different topics are welcome, such as for example: advances in the synthesis of new polymers for chemosensor applications, design of specific polymers for the detection of biological molecules, new biopolymers used in sensory devices, detection of hazardous materials in aqueous or gas environments, or the employment of polymeric sensors in food-related applications.

We are looking forward to hearing from your research advancements,

Prof. Dr. José Miguel García
Dr. José Antonio Reglero Ruiz
Dr. Saúl Vallejos Calzada
Guest Editors

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. Sensors is an international peer-reviewed open access semimonthly 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 2600 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

  • Colorimetric sensors
  • fluorescence sensors
  • electrochemical sensors
  • piezoelectric sensors
  • polymeric sensory devices
  • detection of explosives and chemical warfare agents
  • sensing of cations and anionic species
  • detection of biomolecules
  • detection of biomedical analytes
  • sensing of pollutants

Published Papers (4 papers)

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Research

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14 pages, 43584 KiB  
Article
An Electrochemical Amperometric Ethylene Sensor with Solid Polymer Electrolyte Based on Ionic Liquid
by Petr Kuberský, Jiří Navrátil, Tomáš Syrový, Petr Sedlák, Stanislav Nešpůrek and Aleš Hamáček
Sensors 2021, 21(3), 711; https://doi.org/10.3390/s21030711 - 21 Jan 2021
Cited by 13 | Viewed by 3683
Abstract
An electrochemical amperometric ethylene sensor with solid polymer electrolyte (SPE) and semi-planar three electrode topology involving a working, pseudoreference, and counter electrode is presented. The polymer electrolyte is based on the ionic liquid 1-butyl 3-methylimidazolium bis(trifluoromethylsulfonyl)imide [BMIM][NTf2] immobilized in a poly(vinylidene [...] Read more.
An electrochemical amperometric ethylene sensor with solid polymer electrolyte (SPE) and semi-planar three electrode topology involving a working, pseudoreference, and counter electrode is presented. The polymer electrolyte is based on the ionic liquid 1-butyl 3-methylimidazolium bis(trifluoromethylsulfonyl)imide [BMIM][NTf2] immobilized in a poly(vinylidene fluoride) matrix. An innovative aerosol-jet printing technique was used to deposit the gold working electrode (WE) on the solid polymer electrolyte layer to make a unique electrochemical active SPE/WE interface. The analyte, gaseous ethylene, was detected by oxidation at 800 mV vs. the platinum pseudoreference electrode. The sensor parameters such as sensitivity, response/recovery time, repeatability, hysteresis, and limits of detection and quantification were determined and their relation to the morphology and microstructure of the SPE/WE interface examined. The use of additive printing techniques for sensor preparation demonstrates the potential of polymer electrolytes with respect to the mass production of printed electrochemical gas sensors. Full article
(This article belongs to the Special Issue Polymeric Chemosensors)
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9 pages, 2828 KiB  
Article
Rapid and Sensitive Quantification of the Pesticide Lindane by Polymer Modified Electrochemical Sensor
by Jafar Safaa Noori, John Mortensen and Alemnew Geto
Sensors 2021, 21(2), 393; https://doi.org/10.3390/s21020393 - 08 Jan 2021
Cited by 7 | Viewed by 2792
Abstract
Lindane is documented by the Environmental Protection Agency (EPA) as one of the most toxic registered pesticides. Conventional detection of lindane in the environment requires manual field sampling and complex, time-consuming analytical sample handling relying on skilled labor. In this study, an electrochemical [...] Read more.
Lindane is documented by the Environmental Protection Agency (EPA) as one of the most toxic registered pesticides. Conventional detection of lindane in the environment requires manual field sampling and complex, time-consuming analytical sample handling relying on skilled labor. In this study, an electrochemical sensing system based on a modified electrode is reported. The system is capable of detecting lindane in aqueous medium in only 20 s. The surface of a conventional carbon electrode is modified with a film of conductive polymer that enables detection of lindane down to 30 nanomolar. The electrode modification procedure is simple and results in a robust sensor that can withstand intensive use. The sensitivity of the sensor is 7.18 µA/µM and the performance was demonstrated in the determination of lindane in spiked ground water. This suggests that the sensor is potentially capable of providing useful readings for decision makers. The rapid and sensitive quantification of lindane in aqueous medium is one step forward to new opportunities for direct, autonomous control of the pesticide level in the environment. Full article
(This article belongs to the Special Issue Polymeric Chemosensors)
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11 pages, 3161 KiB  
Article
Study of Light-Activated Regioregular Poly(3-Hexyltiophene) Photoconductive Polymer Sensing Properties in Nerve Agent Simulant (DMMP) Detection
by Paulina Powroznik, Wiesław Jakubik, Agnieszka Stolarczyk, Anna Kazmierczak-Balata, Jaroslaw Wrotniak and Tomasz Jarosz
Sensors 2020, 20(2), 491; https://doi.org/10.3390/s20020491 - 15 Jan 2020
Cited by 5 | Viewed by 2535
Abstract
In the present work, we report the use of regioregular poly(3-hexyltiophene) polymer (RR-P3HT) as a potential light-activated material for sensing the chemical nerve agent simulant dimethyl methylphosphonate (DMMP). The electrical response of thick films of RR-P3HT, deposited by spray-coating method onto a porous [...] Read more.
In the present work, we report the use of regioregular poly(3-hexyltiophene) polymer (RR-P3HT) as a potential light-activated material for sensing the chemical nerve agent simulant dimethyl methylphosphonate (DMMP). The electrical response of thick films of RR-P3HT, deposited by spray-coating method onto a porous laminate substrate at room temperature, to DMMP vapours was investigated. The studied material was activated by light-emitting diodes that emitted light of different wavelengths. The sensing properties of RR-P3HT are considerably enhanced upon exposure to blue and yellow light. However, excitation by the low wavelength light (blue) caused degeneration of the material, resulting in lowered stability. In the case of the yellow light, degeneration was much slower and the limit of detection was 0.4 ppm. The studied material exhibited high selectivity, as it did not respond to 6 ppm of acetone and methanol vapours. Full article
(This article belongs to the Special Issue Polymeric Chemosensors)
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Review

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33 pages, 2239 KiB  
Review
Nanostructures for Biosensing, with a Brief Overview on Cancer Detection, IoT, and the Role of Machine Learning in Smart Biosensors
by Aishwaryadev Banerjee, Swagata Maity and Carlos H. Mastrangelo
Sensors 2021, 21(4), 1253; https://doi.org/10.3390/s21041253 - 10 Feb 2021
Cited by 41 | Viewed by 6041
Abstract
Biosensors are essential tools which have been traditionally used to monitor environmental pollution and detect the presence of toxic elements and biohazardous bacteria or virus in organic matter and biomolecules for clinical diagnostics. In the last couple of decades, the scientific community has [...] Read more.
Biosensors are essential tools which have been traditionally used to monitor environmental pollution and detect the presence of toxic elements and biohazardous bacteria or virus in organic matter and biomolecules for clinical diagnostics. In the last couple of decades, the scientific community has witnessed their widespread application in the fields of military, health care, industrial process control, environmental monitoring, food-quality control, and microbiology. Biosensor technology has greatly evolved from in vitro studies based on the biosensing ability of organic beings to the highly sophisticated world of nanofabrication-enabled miniaturized biosensors. The incorporation of nanotechnology in the vast field of biosensing has led to the development of novel sensors and sensing mechanisms, as well as an increase in the sensitivity and performance of the existing biosensors. Additionally, the nanoscale dimension further assists the development of sensors for rapid and simple detection in vivo as well as the ability to probe single biomolecules and obtain critical information for their detection and analysis. However, the major drawbacks of this include, but are not limited to, potential toxicities associated with the unavoidable release of nanoparticles into the environment, miniaturization-induced unreliability, lack of automation, and difficulty of integrating the nanostructured-based biosensors, as well as unreliable transduction signals from these devices. Although the field of biosensors is vast, we intend to explore various nanotechnology-enabled biosensors as part of this review article and provide a brief description of their fundamental working principles and potential applications. The article aims to provide the reader a holistic overview of different nanostructures which have been used for biosensing purposes along with some specific applications in the field of cancer detection and the Internet of things (IoT), as well as a brief overview of machine-learning-based biosensing. Full article
(This article belongs to the Special Issue Polymeric Chemosensors)
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