Synthesis of Thin‐Layered Molybdenum Disulfide‐Based Polyaniline Nanointerfaces for Enhanced Direct Electrochemical DNA Detection

Yang, Tao; Lian, Meng; Chen, Huaiyin; Luo, Shi-Zhong; Li, Weihua; Jiao, Kui

doi:10.1002/admi.201500700

Cited by 32 publications

(14 citation statements)

References 42 publications

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“…[ 59 ] In particular, during the polymerization process, the protonated aniline monomers initially transformed into aniline nitrenium cations and nucleation sites were likely generated on the surface of WS 2 . [ 60 ] The electroactive materials store charge via two possible mechanisms. Specifically, alkali metal cation (Na + ) from the electrolyte (Na 2 SO 4 ) diffuses and intercalates within the WS 2 layers, according to the following reaction: [ 61,62 ]

\begin{matrix} {WS}_{2} + {Na}^{+} + {normale}^{-} \to WS - SNa \end{matrix}

An alternative pathway involves adsorption of the sodium ions at the electrode/electrolyte interface, according to following Scheme:

\begin{matrix} {WS}_{2} + {Na}^{+} + {normale}^{-} \to {WS}_{2} - Na \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

Tungsten‐Disulfide/Polyaniline High Frequency Supercapacitors

Adhikari

Shauloff

Shalish

et al. 2021

Adv Elect Materials

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Transition metal dichalcogenides are considered promising constituents in energy storage devices due to their large surface areas, 2D sheet structures, and occurrence of efficient redox reactions at their surfaces. Supercapacitors comprising WS2‐polyaniline (PANI) composite electrodes which exhibit excellent electrochemical properties, particularly effective high frequency response, are constructed. The highly porous WS2‐PANI device facilitate rapid ion transport and surface access, aiding rapid reversible redox reactions contributing to the high frequency pseudocapacitive profile of the device. The symmetric WS2‐PANI supercapacitor displays significantly higher capacitance of 180 µF cm−2 at a frequency of 120 Hz. This study points to potential application of WS2 composites in high frequency applications such as alternating current line filtering, and may open new avenues for employing the material in energy storage applications.

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\begin{matrix} {WS}_{2} + {Na}^{+} + {normale}^{-} \to WS - SNa \end{matrix}

An alternative pathway involves adsorption of the sodium ions at the electrode/electrolyte interface, according to following Scheme:

\begin{matrix} {WS}_{2} + {Na}^{+} + {normale}^{-} \to {WS}_{2} - Na \end{matrix}

…”

Section: Resultsmentioning

confidence: 99%

Tungsten‐Disulfide/Polyaniline High Frequency Supercapacitors

Adhikari

Shauloff

Shalish

et al. 2021

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…The hybridization of the target DNA with the Electrochemical biosensors are another promising approach for detecting nucleic acid. Yang et al developed a label-free, and self-signal amplification platform for sensing cauliflower mosaic virus 35S (CaMV35S) DNA based on nanocomposites of MoS 2 and conductive polymers, polyaniline (PANI, Figure 8) [110]. By integrating PANI (organic polymer) into MoS 2 (inorganic materials), the electronic conductivity of the whole composite was much improved with a low electron transfer resistance (R et ).…”

Section: Tmds-based Disease-related Nucleic Acids Biosensorsmentioning

confidence: 99%

Recent Advances in Two-Dimensional Transition Metal Dichalcogenide Nanocomposites Biosensors for Virus Detection before and during COVID-19 Outbreak

et al. 2021

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The deadly Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) outbreak has become one of the most challenging pandemics in the last century. Clinical diagnosis reports a high infection rate within a large population and a rapid mutation rate upon every individual infection. The polymerase chain reaction has been a powerful and gold standard molecular diagnostic technique over the past few decades and hence a promising tool to detect the SARS-CoV-2 nucleic acid sequences. However, it can be costly and involved in complicated processes with a high demand for on-site tests. This pandemic emphasizes the critical need for designing cost-effective and fast diagnosis strategies to prevent a potential viral source by ultrasensitive and selective biosensors. Two-dimensional (2D) transition metal dichalcogenide (TMD) nanocomposites have been developed with unique physical and chemical properties crucial for building up nucleic acid and protein biosensors. In this review, we cover various types of 2D TMD biosensors available for virus detection via the mechanisms of photoluminescence/optical, field-effect transistor, surface plasmon resonance, and electrochemical signals. We summarize the current state-of-the-art applications of 2D TMD nanocomposite systems for sensing proteins/nucleic acid from different types of lethal viruses. Finally, we identify and discuss the advantages and limitations of TMD-based nanocomposites biosensors for viral recognition.

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“…Besides the noble metal NPs, the carbon materials, conductive polymers and transition metals have also been used to modify TMD nanosheets to increase the electrical conductivity and surface area, thus improving the electrochemical performance. [88][89][90][91] 3.2.1 Detection of nucleic acids. 2D TMD nanomaterials have been explored for the electrochemical detection of nucleic acids in recent years.…”

Section: D Tmd Nanomaterials Used For Electrochemical Biosensorsmentioning

confidence: 99%

Two-dimensional transition metal dichalcogenide nanomaterials for biosensing applications

Huang

Tan

et al. 2017

Mater. Chem. Front.

183

120

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Biosensors are powerful tools used to monitor biological and biochemical processes, ranging from clinical diagnosis to disease therapy. The huge demands for bioassays greatly promote the development of new nanomaterials as sensing platforms. Two-dimensional (2D) nanomaterials with superior properties, such as large surface areas and excellent conductivities, are excellent candidates for biosensor applications. Among them, single-or few-layered transition metal dichalcogenide (TMD) nanomaterials represent an emerging class of 2D nanomaterials with unique physical, chemical, and electronic properties. In this mini-review, we summarize the recent progress in 2D TMD nanomaterial-based biosensors for the sensitive detection of various kinds of targets, including nucleic acid, proteins, and small biomolecules, based on different sensors like optical sensors and electrochemical sensors, and bioelectronic sensors. Finally, the challenges and opportunities in this promising field are also proposed.

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Synthesis of Thin‐Layered Molybdenum Disulfide‐Based Polyaniline Nanointerfaces for Enhanced Direct Electrochemical DNA Detection

Cited by 32 publications

References 42 publications

Tungsten‐Disulfide/Polyaniline High Frequency Supercapacitors

Tungsten‐Disulfide/Polyaniline High Frequency Supercapacitors

Recent Advances in Two-Dimensional Transition Metal Dichalcogenide Nanocomposites Biosensors for Virus Detection before and during COVID-19 Outbreak

Two-dimensional transition metal dichalcogenide nanomaterials for biosensing applications

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