An efficient amperometric sensor for chloride ion detection through electroactive e-spun PVA-PANi-g-C3N4 nanofiber

Chokkiah, Bavatharani; Eswaran, Muthusankar; Wabaidur, Saikh Mohammad; ALOthman, Zeid A.; Lee, Soo Chool; Dhanusuraman, Ragupathy

doi:10.1007/s10854-021-07378-0

Cited by 4 publications

(4 citation statements)

References 63 publications

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“…Electrospun nanofibers (ESNFs) can be considered suitable for supporting the immobilization of biorecognition elements because they meet several requirements, including maximal contact with the surrounding media, an extensively large surface area, a very porous structure, excellent surface modification, and subcellular size [ 36 , 37 , 38 ]. For this purpose, Chokkiah et al synthesized polyvinyl alcohol (PVA)–polyaniline–graphitic carbon nitride ESNFs for chloride ion sensing to help environmental monitoring [ 39 ]. Yezer and Demirkol created cellulose acetate–chitosan/glucose oxidase ESNFs for sensing glucose [ 40 ].…”

Section: Introductionmentioning

confidence: 99%

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

et al. 2023

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Herein, dendrimer-modified montmorillonite (Mt)-decorated poly-Ɛ-caprolactone (PCL) and chitosan (CHIT)-based nanofibers were prepared. Mt was modified with a poly(amidoamine) generation 1 (PAMAMG1) dendrimer, and the obtained PAMAMG1–Mt was incorporated into the PCL–CHIT nanofiber’s structure. The PCL–CHIT/PAMAMG1–Mt nanofibers were conjugated with glutamate oxidase (GluOx) to design a bio-based detection system for monosodium glutamate (MSG). PAMAMG1–Mt was added to the PCL–CHIT backbone to provide a multipoint binding side to immobilize GluOx via covalent bonds. After the characterization of PCL–CHIT/PAMAMG1–Mt/GluOx, it was calibrated for MSG. The linear ranges were determined from 0.025 to 0.25 mM MSG using PCL–CHIT/Mt/GluOx and from 0.0025 to 0.175 mM MSG using PCL–CHIT/PAMAMG1–Mt/GluOx (with a detection limit of 7.019 µM for PCL–CHIT/Mt/GluOx and 1.045 µM for PCL–CHIT/PAMAMG1–Mt/GluOx). Finally, PCL–CHIT/PAMAMG1–Mt/GluOx was applied to analyze MSG content in tomato soup without interfering with the sample matrix, giving a recovery percentage of 103.125%. Hence, the nanofiber modification with dendrimer-intercalated Mt and GluOx conjugation onto the formed nanocomposite structures was performed, and the PCL–CHIT/PAMAMG1–Mt/GluOx system was successfully developed for MSG detection.

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Section: Introductionmentioning

confidence: 99%

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

et al. 2023

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“…The readout of the acquired signal typically requires some manipulation, which should preferably occur on the same unit as the detection. [23][24][25][26][27][28][29][30][31] A field-effect transistor (FET)-based biosensor is one type of electrical biosensor that attracted much attention in the past decade, owing to its suitability for devices used for point-of-care diagnostics, as well as in other fields such as, e.g., monitoring of environmental pollution, food quality, and pharmaceuticals. FET devices directly translate the analyte-receptor interaction into electrical signals.…”

Section: Introductionmentioning

confidence: 99%

“…The readout of the acquired signal typically requires some manipulation, which should preferably occur on the same unit as the detection. [ 23–31 ]…”

Section: Introductionmentioning

confidence: 99%

A Road Map toward Field‐Effect Transistor Biosensor Technology for Early Stage Cancer Detection

Eswaran

Chokkiah²,

Pandit

et al. 2022

Small Methods

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ensure early detection, is the key to the survival of cancer patients. [1][2][3][4][5][6] Cancer biomarkers (encompassing metabolites, peptides/proteins, and nucleic acids-based markers) play a vital role in detecting cancers and monitoring their progression as well as in evaluating treatment effectiveness. Even minor changes in the levels of cancer biomarkers are very relevant for diagnostics. These minor changes need to be detected in complex biological samples, such as blood, saliva, urine, and/or other body fluids. [7][8][9][10][11][12] Hence, ultrasensitive and very specific diagnostic tools are required for the detection and quantification of such biomarkers. Conventional cancer detection methods such as computed tomography, cytological detection, magnetic resonance imaging, fluorescence imaging, immunohistochemistry, thermography, X-ray technique, radioimmunoassay, enzyme-linked immunosorbent assay (ELISA), and ultrasound method, typically encompass several stages, e.g., complex pretreatment processes, timeconsuming nucleic acid amplification or mass spectrometry analysis of protein biomarkers. In addition to being time-consuming, existing diagnostic tools are also typically expensive, and in some cases lack the required sensitivity and specificity, which limits their utility in clinical diagnostics. [13][14][15][16] Recent advancements in micro/nanoelectromechanical system (M/ NEMS) technology show their potential to overcome such drawbacks and have the possibility to fabricate a miniaturized device with highly selective and sensitive clinical diagnostic functions.

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“…For different applications, the above-mentioned hydrogels are often combined with conductive polymers as polyaniline (PANI) [39][40][41][42][43][44], poly(vinyl pyrrolidone) (PVP) [45], poly(acrylic acid) (PAA) [46][47][48][49], polypropylene (PP) [50], poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOT:PSS) [51], or cellulose [52,53]. By adding TiO 2 nanoparticles to the combination PVA + PANI, an increase of the actuation strain of the nanofiber webs was observed [54], while the combination PVA + PANI with graphitic carbon nitride (g-C 3 N 4 ) proved to be very sensitive for chloride ion detection [55]. Functional network hydrogels were fabricated from PVA + PVP and a dynamic ferric cross-linked cellulose nanocrystals (CNCs-Fe 3+ ) network, acting as flexible and wearable strain sensors for human healthcare monitoring or sensory skin in soft robotics [45].…”

Section: Introductionmentioning

confidence: 99%

Birefringence of Thin Uniaxial Polymer Films Estimated Using the Light Polarization Ellipse

et al. 2022

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A simple method for determining the linear birefringence of the thin layers based on the determination of the orientation of the polarization ellipse of totally polarized light is proposed and it is applied to PVA thin foils. Theoretical notions and the experimental procedure are described. The linear birefringence of polymer thin foils with different degrees of stretching is determined and the applicability of the method is discussed.

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An efficient amperometric sensor for chloride ion detection through electroactive e-spun PVA-PANi-g-C3N4 nanofiber

Cited by 4 publications

References 63 publications

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

A Road Map toward Field‐Effect Transistor Biosensor Technology for Early Stage Cancer Detection

Birefringence of Thin Uniaxial Polymer Films Estimated Using the Light Polarization Ellipse

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