Urea Detection of Electrochemical Transistor Sensors based on Polyanline (PANI)/MWCNT/Cotton Yarns

Wang, Yao; Zhang, Yang; Wang, Yuedan; Zhu, Rufeng; Chen, Yuanli; Li, Xue; Xu, Jia; Li, Mufang; Wang, Dong

doi:10.1002/elan.202100303

Cited by 15 publications

(9 citation statements)

References 41 publications

(43 reference statements)

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Section: Structural Design Of Pani-based Sensorsmentioning

confidence: 99%

“…To address this concern, Wang et al synthesized PANI/multi-walled carbon nanotube (MWCNT) composites by in situ polymerization to wrap MWCNTs and PANI on the surface of cotton yarn and assembled them into a fibrous OECT urea sensor (Figure d) . The elevated sensor performance with high sensitivity (0.06 NCR/decade), fast response time (0.02 s), and high linearity (correlation coefficient: 0.9716) in the range of urea concentration from 1 nM to 1 μM was achieved thanks to the strong coupling interaction and synergistic effect between MWCNTs and PANI.…”

Section: Structural Design Of Pani-based Sensorsmentioning

confidence: 99%

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Polyaniline-Based Biological and Chemical Sensors: Sensing Mechanism, Configuration Design, and Perspective

Yang

Wang

Cao

et al. 2023

ACS Appl. Electron. Mater.

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By virtue of its tunable electrical conductivity, remarkable solution processing capability, and great biocompatibility, polyaniline (PANI) has been recognized as an attractive active material for use in biological and chemical ("bio/chemical") sensors. This Spotlight article focuses on the structure and characteristics of PANI-based materials and the corresponding device-level sensing performance. PANI-based bio/chemical sensors, such as chemi-resistive sensors, electrochemical sensors, and transistor-based sensors, are systematically elucidated based on device architecture and sensing mechanism. The corresponding structure−function relationships among PANI doping state, microscopic structure, local crystallinity, and their functionalities in three types of sensors have been systematically elaborated. Finally, the state-of-the-art progress in applications of these sensors and the corresponding breakthroughs in a broader context are outlined from the challenges to strategies.

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Section: Structural Design Of Pani-based Sensorsmentioning

confidence: 99%

Section: Structural Design Of Pani-based Sensorsmentioning

confidence: 99%

Polyaniline-Based Biological and Chemical Sensors: Sensing Mechanism, Configuration Design, and Perspective

Yang

Wang

Cao

et al. 2023

ACS Appl. Electron. Mater.

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“…Versatile bioassay systems have been developed to detect urea, including electrochemistry, , organic electrochemical transistors (OECTs), − colorimetry, fluorometry, , and liquid crystal (LC) approaches . These pioneering works have shown promising strategies that enable the sensitive detection of urea with a micromolar limit of detection (LOD).…”

Section: Introductionmentioning

confidence: 99%

“…Figure 5. Selectivity of the (a) fluorogenic and (b) chromogenic response from CD hybrid nanosensor against interferents: (1) urea (Ur), (2) creatinine (Cr), (3) acetylcholine (Ach), (4) cystamine (Cyst), (5) glucose (Glu), (6) uric acid (UA),(7) ferrous ion (Fe 2+ ), (8) sodium nitrate (NaNO 3 ), (9) potassium phosphate (PP), (10) calcium nitrate tetrahydrate (CNTH),(11) magnesium sulfate (MgSO 4 ), and (12) blank (inset images represents the fluorometric and colorimetric responses to the interferents). Data are mean (circle) ± σ (error bar), with n = 3.…”

mentioning

confidence: 99%

Fluorometric and Colorimetric Hybrid Carbon-Dot Nanosensors for Dual Monitoring of Urea

Elmasry

Shaban

Elbalaawy

et al. 2023

ACS Appl. Nano Mater.

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Urea is an important indicator for health, environmental, and energy applications worldwide. Various analytics have been developed to detect urea rapidly and selectively for real-world interfacing; however, they still suffer from noise fluctuations due to environmental and instrumental conditions because most analytics are based on a single-signal readout system. In this study, we designed and synthesized a dual-signal, fluorometric and colorimetric, and read-out assay that integrates fluorescent carbon dot (CD) nanosensors with pH-responsive plasmonic silver nanoparticles (Ag NPs) for urea detection. The urease enzyme can specifically hydrolyze urea to generate carbon dioxide and ammonia, causing an increase in the pH, which activates the reduction affinity of tannic acid to generate plasmonic Ag NPs in situ. In situ generation of plasmonic Ag NPs is enabled by the reduction affinity of tannic acid, which is activated when the pH rises as a result of the urease enzyme hydrolyzing urea to produce carbon dioxide and ammonia. The absorption spectra of the Ag NPs overlapped closely with the fluorescence spectrum of the CDs, enabling effective quenching of the CD fluorescence upon urea exposure. This fluorogenic and chromogenic dual signal is used to quantify the accurate urea concentrations, showing a limit of detection (LOD) of 18 nM and 1.05 μM for fluorometric and colorimetric sensing within linear ranges between 100 nM−1 mM and 50 μM−1 mM, respectively�the lowest recorded LOD among fluorometric or colorimetric sensors. In addition, the dual sensor showed reliable detection of urea in real urine samples with (96−102.5%) recoveries. Finally, the dual-signal nanosensor was successfully implanted in the hydrogel matrix to facilitate a solid-state stable signal readout with an LOD of 287 nM. This dual-sensor construct provides fundamental solutions for nanomaterials in reliable and accurate urea detection applications that accelerate real-world interfacing.

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“…With the help of the modification process, it is possible to transfer the physicochemical properties of the modifier to the electrode surface (Abruna, 1988). This way, selectivity and sensitivity can be achieved for various purposes such as electrocatalysis (Çelebi et al, 2008;Sönmez Çelebi et al, 2020), electroanalysis (Singh et al, 2017;Wang et al, 2021) and even specific applications such as controlled drug delivery systems (Herrera et al 2018;Li et al 2018). On the other hand, metal nanoparticles have been objects of catalysis studies and materials science where they find wide application for designing advanced electrode materials (Kralik & Biffis, 2001).…”

Section: Introductionmentioning

confidence: 99%

Modification of Glassy Carbon Electrode with Palladium Doped Conducting Poly(thionine) Film

KARA

Çelebi

2021

Ordu Üniversitesi Bilim Ve Teknoloji Dergisi

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Glassy carbon electrode was modified with Pd particles using a conducting poly(thionine) as the support material. Polymerization of thionine was carried by electrochemical process from aqueous thionine acetate solution using cyclic voltammetry. K 2 PdCl 4 was used as the Pd precursor and the Pd immobilization was performed with constant potential electrolysis. The modified electrode was characterized electrochemically using cyclic voltammetry and electrochemical impedance spectroscopy methods. The results revealed that the modification process significantly increases the conductivity properties of the electrode material.

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Urea Detection of Electrochemical Transistor Sensors based on Polyanline (PANI)/MWCNT/Cotton Yarns

Cited by 15 publications

References 41 publications

Polyaniline-Based Biological and Chemical Sensors: Sensing Mechanism, Configuration Design, and Perspective

Polyaniline-Based Biological and Chemical Sensors: Sensing Mechanism, Configuration Design, and Perspective

Fluorometric and Colorimetric Hybrid Carbon-Dot Nanosensors for Dual Monitoring of Urea

Modification of Glassy Carbon Electrode with Palladium Doped Conducting Poly(thionine) Film

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