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Polymers and Biomaterials Based Sensors
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Polymers and Biomaterials Based Sensors

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Polymeric Materials".

Deadline for manuscript submissions: closed (10 October 2023) | Viewed by 7465

Special Issue Editor

Dr. Jinsung Park

E-Mail Website
Guest Editor
Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Korea
Interests: environmental monitoring; biosensors; SERS; nanostructure; ultra-sensitive detection; electrochemical sensor; point-of-care

Special Issue Information

Dear Colleagues,

With the recent advancement of nanomaterials and nanostructured materials, sensor performance has been greatly improved. Polymers and biomaterials-based sensors have especially been widely applied due to their biocompatibility and optical, electrochemical, and physical properties. Better selectivity and high sensitivity measurements have been achieved by replacing classical sensor materials with polymers and biomaterials involving nanotechnology.

This Special Issue, entitled “Polymers and Biomaterials-Based Sensors”, mainly focuses on the applications of polymers and biomaterials to sensors. The aim of this Special Issue is to report high-sensitivity sensors using new materials or new research on known materials. This may include such research areas as the practical application using various analysis methods (electrochemical and SERS, LSPR, etc.) for medical diagnostic, food safety, and environmental monitoring.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Original research manuscripts and reviews are welcome.

Dr. Jinsung Park
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. Materials 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

  • polymers
  • biomaterials
  • point-of-care
  • biomolecular detection
  • biosensors
  • surface modification
  • immunoassay
  • optical sensors
  • electrochemical sensors
  • SERS
  • nanostructure
  • wide-range detection
  • ultra-sensitive detection
  • environmental monitoring
  • medical diagnostics

Published Papers (4 papers)

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Research

11 pages, 1900 KiB  
Article
Polyacrylic Acid/Polyaniline-Coated Multimode Interferometer for Ammonia Detection
by Ning Wang, Chao Zhao, Gang Long, Binyun Xia, Liang Wan, Kunpeng Niu, Jianguo Hou, Jiale Wang, Lei Lei and Zhichao Wang
Materials 2023, 16(4), 1478; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16041478 - 09 Feb 2023
Cited by 3 | Viewed by 1212
Abstract
A coaxial optical fiber interferometer (COFI) is proposed here for ammonia sensing, which comprises two light-carrying single-mode fibers (SMF) fused to a section of no-core fiber (NCF), thus forming an optical interferometer. The outer surface of the COFI is coated with a layer [...] Read more.
A coaxial optical fiber interferometer (COFI) is proposed here for ammonia sensing, which comprises two light-carrying single-mode fibers (SMF) fused to a section of no-core fiber (NCF), thus forming an optical interferometer. The outer surface of the COFI is coated with a layer of polyacrylic acid (PAA)/polyaniline (PAni) film. The refractive index (RI) of the sensitive layer varies when PAA/PAni interacts with ammonia, which leads to the resonance wavelength shift. The surface morphology and structure of the PAA/PAni composites were characterized by using a scanning electron microscope (SEM) and Fourier-transform infrared (FTIR) spectroscopy. When the sensor was exposed to an ammonia atmosphere of different concentrations at room temperature, the sensing performance of the PAA/PAni composite film was superior to that of a sensitive film formed by single-component PAA or PAni. According to the experimental results, the composite film formed by 5 wt% PAA mixed with 2 wt% PAni shows better performance when used for ammonia sensing. A maximum sensitivity of 9.8 pm/ppm was obtained under the ammonia concentration of 50 ppm. In addition, the sensor shows good performance in response time (100 s) and recovery time (180 s) and has good stability and selectivity. The proposed optical fiber ammonia sensor is adapted to monitor leakage in its production, storage, transportation, and application. Full article
(This article belongs to the Special Issue Polymers and Biomaterials Based Sensors)
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9 pages, 2176 KiB  
Article
Highly Sensitive and Real-Time Detection of Zinc Oxide Nanoparticles Using Quartz Crystal Microbalance via DNA Induced Conjugation
by Chanho Park, Hyunjun Park, Juneseok You, Sungsoo Na and Kuewhan Jang
Materials 2022, 15(17), 6113; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15176113 - 02 Sep 2022
Cited by 1 | Viewed by 1378
Abstract
With the development of nanotechnology, nanomaterials have been widely used in the development of commercial products. In particular, zinc oxide nanoparticles (ZnONPs) have been of great interest due to their extraordinary properties, such as semiconductive, piezoelectric, and absorbance properties in UVA and UVB [...] Read more.
With the development of nanotechnology, nanomaterials have been widely used in the development of commercial products. In particular, zinc oxide nanoparticles (ZnONPs) have been of great interest due to their extraordinary properties, such as semiconductive, piezoelectric, and absorbance properties in UVA and UVB (280–400 nm) spectra. However, recent studies have investigated the toxicity of these ZnONPs; therefore, a ZnONP screening tool is required for human health and environmental problems. In this study, we propose a detection method for ZnONPs using quartz crystal microbalance (QCM) and DNA. The detection method was based on the resonance frequency shift of the QCM. In detail, two different complementary DNA strands were used to conjugate ZnONPs, which were subjected to mass amplification. One of these DNA strands was designed to hybridize to a probe DNA immobilized on the QCM electrode. By introducing the ZnONP conjugation, we were able to detect ZnONPs with a detection limit of 100 ng/mL in both distilled water and a real sample of drinking water, which is 3 orders less than the reported critical harmful concentration of ZnONPs. A phosphate terminal group, which selectively interacts with a zinc oxide compound, was also attached at one end of a DNA linker and was attributed to the selective detection of ZnONPs. As a result, better selective detection of ZnONPs was achieved compared to gold and silicon nanoparticles. This work demonstrated the potential of our proposed method as a ZnONP screening tool in real environmental water systems. Full article
(This article belongs to the Special Issue Polymers and Biomaterials Based Sensors)
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11 pages, 2016 KiB  
Article
Novel Detection Method for Circulating EGFR Tumor DNA Using Gravitationally Condensed Gold Nanoparticles and Catalytic Walker DNA
by Juneseok You, Chanho Park, Kuewhan Jang, Jinsung Park and Sungsoo Na
Materials 2022, 15(9), 3301; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15093301 - 05 May 2022
Cited by 2 | Viewed by 1673
Abstract
The detection of circulating tumor DNA is a major challenge in liquid biopsies for cancer. Conventionally, quantitative polymerase chain reactions or next-generation sequencing are used to detect circulating tumor DNA; however, these techniques require significant expertise, and are expensive. Owing to the increasing [...] Read more.
The detection of circulating tumor DNA is a major challenge in liquid biopsies for cancer. Conventionally, quantitative polymerase chain reactions or next-generation sequencing are used to detect circulating tumor DNA; however, these techniques require significant expertise, and are expensive. Owing to the increasing demand for a simple diagnostic method and constant monitoring of cancer, a cost-effective detection technique that can be conducted by non-experts is required. The aim of this study was to detect the circulating tumor DNA containing the epidermal growth factor receptor (EGFR) exon 19 deletion, which frequently occurs in lung cancer. By applying walker DNA to a catalytic hairpin assembly and using the differential dispersibility of gold nanoparticles, we detected EGFR exon 19 deletion mutant #2 DNA associated with lung cancer. Our sensing platform exhibited a limit of detection of 38.5 aM and a selectivity of 0.1% for EGFR exon 19 wild-type DNA. Moreover, we tested and compared EGFR exon 19 deletion mutants #1 and #3 to evaluate the effect of base pair mismatches on the performance of the said technique. Full article
(This article belongs to the Special Issue Polymers and Biomaterials Based Sensors)
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13 pages, 2445 KiB  
Article
Control of Specific/Nonspecific Protein Adsorption: Functionalization of Polyelectrolyte Multilayer Films as a Potential Coating for Biosensors
by Tomasz Kruk, Monika Bzowska, Alicja Hinz, Michał Szuwarzyński and Krzysztof Szczepanowicz
Materials 2021, 14(24), 7629; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14247629 - 11 Dec 2021
Cited by 6 | Viewed by 2301
Abstract
Control of nonspecific/specific protein adsorption is the main goal in the design of novel biomaterials, implants, drug delivery systems, and sensors. The specific functionalization of biomaterials can be achieved by proper surface modification. One of the important strategies is covering the materials with [...] Read more.
Control of nonspecific/specific protein adsorption is the main goal in the design of novel biomaterials, implants, drug delivery systems, and sensors. The specific functionalization of biomaterials can be achieved by proper surface modification. One of the important strategies is covering the materials with functional coatings. Therefore, our work aimed to functionalize multilayer coating to control nonspecific/specific protein adsorption. The polyelectrolyte coating was formed using a layer-by-layer technique (LbL) with biocompatible polyelectrolytes poly-L-lysine hydrobromide (PLL) and poly-L-glutamic acid (PGA). Nonspecific protein adsorption was minimized/eliminated by pegylation of multilayer films, which was achieved by adsorption of pegylated polycations (PLL-g-PEG). The influence of poly (ethylene glycol) chain length on eliminating nonspecific protein adsorption was confirmed. Moreover, to achieve specific protein adsorption, the multilayer film was also functionalized by immobilization of antibodies via a streptavidin bridge. The functional coatings were tested, and the adsorption of the following proteins confirmed the ability to control nonspecific/specific adsorption: human serum albumin (HSA), fibrinogen (FIB), fetal bovine serum (FBS), carcinoembryonic antigen human (CEA) monitored by quartz crystal microbalance with dissipation (QCM-D). AFM imaging of unmodified and modified multilayer surfaces was also performed. Functional multilayer films are believed to have the potential as a novel platform for biotechnological applications, such as biosensors and nanocarriers for drug delivery systems. Full article
(This article belongs to the Special Issue Polymers and Biomaterials Based Sensors)
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