JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2022
·Vol. 169
·期 8
·087502
·
IF 4.386
Junhao Chen,Azadeh Nilghaz,Xinyu Chen,Shan Liu,Junfei Tian
This study reports a novel strategy to fabricate a third-generation glucose sensor on screen-printed carbon electrode (SPCE). The direct electron transfer (DET) between glucose oxidase (GOx) and SPCE was accomplished by immobilization of GOx in poly (3, 4-ethylenedioxythiophene) (PEDOT) functionalized electrodes. The use of PEDOT relaxed the requirement for the distance between the redox site of GOx, flavin adenine dinucleotide (FAD) cofactors, and the electrodes in the DET process due to its low ionization potential and good hole-injection ability. This strategy has not required the introduction of an additional mediated agent, and the response current of glucose consisted of DET current. The developed sensor demonstrated high electrochemical responses of glucose in human blood plasma with a wide linear range of 1–14 mM l−1. The reproducibility of the sensor (electrodes) was also studied by sequential determinations of glucose under analogous parameters over time, showing no significant decrease in the faradic response. The construction of DET process with facile methods (3 steps of drop-coating), and simultaneously, the fundamental SPCE does not need any activation process, which makes large mass production of third-generation biosensing systems possible.
研究领域:
生物化学
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电化学
·
材料科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Yujuan Xu,Wu Lei,Juan Su,Jinjin Hu,Xiaodan Yu,Tong Zhou,Yun Yang,Daniel Mandler,Qingli Hao
A fast, ultrasensitive electrochemical sensing platform based on graphitic carbon nitride-electrochemically deposited-poly(3,4-ethylenedioxythiophene) (g-C 3 N 4 -E-PEDOT) composite was constructed by in-situ electropolymerization and applied for the quantitative determination of acetaminophen (AP). E-PEDOT was introduced as the conducting matrix for developing g-C 3 N 4 composite to complement the poor conductivity disadvantage of g-C 3 N 4 . The strong affinity and synergetic effect between g-C 3 N 4 and E-PEDOT, which were analyzed by PM6 computational calculation, highly improved the electron transfer property and remarkably enhanced the electrochemical catalytic activity of the composite. The g-C 3 N 4 -E-PEDOT modified glassy carbon electrode (GCE) demonstrated better electrocatalytic activity towards the oxidation of AP than bare, g-C 3 N 4 and E-PEDOT modified ones. Under the optimized conditions, the oxidation peak currents at the g-C 3 N 4 -E-PEDOT/GCE increased linearly in the concentration range of AP from 0.01 to 2 μM and 2–100 μM, and an ultra-low limit of detection (LOD) of 34.28 nM was obtained (S/N = 3). In addition, the g-C 3 N 4 -E-PEDOT/GCE was successfully applied for the AP determination in the clinical human serum, and also exhibited excellent selectivity, reproducibility and stability. Except the novel AP determination approach, moreover, this work provided a new electrochemical application angle of graphitic carbon nitride theoretically as well as experimentally.
研究领域:
分析化学
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材料科学
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医学检测
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2015
·Vol. 8
·期 2
·316-325
·
IF 1.821
Fugang Xu,Ying Liu,Shi Xie,Li Wang
In this study, a sensitive hydrazine sensor based on CuxO decorated three dimensional poly(3,4-ethylene-dioxythiophene) (3D-PEDOT) was developed. A 3D-PEDOT–CuxO hybrid was prepared through a facile electrochemical deposition and cyclic voltammetry treatment process. The hybrid material was characterized by scanning microscopy (SEM), X-ray energy dispersive spectroscopy (EDS), Raman, and electrochemical methods. It was found that 3D-PEDOT not only acts as a matrix to increase the loading amount of CuxO and enhances the conductivity, but also directly contributes to the catalytic oxidation of hydrazine. Owing to the synergistic interaction between 3D-PEDOT and CuxO, the 3D-PEDOT–CuxO hybrid displayed obviously enhanced catalysis for hydrazine oxidation with lower overpotential and stronger oxidation current compared to single component CuxO or 3D-PEDOT. The hydrazine sensor based on the 3D-PEDOT–CuxO hybrid exhibited a one order of magnitude wider linear range (0.5 μM to 53 mM), ten-fold lower detection limit (0.2 μM) and higher stability compared to those of the sensor based on CuxO. The proposed sensor was also used for the determination of hydrazine in real water samples with a satisfactory recovery.
研究领域:
材料科学
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分析化学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Songjun Li,Ling Chen,Kan Zhang,Shuping Wu,Xiaojuan Shen,Jie Zhao
Poly(3,4-ethylenedioxythiophene) (PEDOT) has been electropolymerized on the Si wafer through a non-aqueous galvanostatic method, which is employed to fabricate the Si/organic solar cell for the first time. Surface morphology , film thickness as well as the sheet resistance of the PEDOT-coated Si wafer are investigated by controlling the polymerization time, and the best electropolymerization time for the Si/PEDOT device performance is 8 s. However, the pristine PEDOT film shows low carrier concentration, and the low work function is not suitable for the fabrication of high performance solar cells. Interestingly, after optimizing the PEDOT-coated Si wafer with hydrochloroplatinic acid (H 2 PtCl 6 ) solution, the work function of the PEDOT film is enhanced, which raises the barrier height (Φ SBH ) as well as V bi between the Si and PEDOT interface. Additionally, the sheet resistance of the PEDOT layer is reduced. Both of them are beneficial for the better charge transfer and collection. As a result, the efficiency of 7.36% has been achieved by the Si/PEDOT devices, which is much higher than that of the control ones, ∼5.49%. More importantly, due to the stable PEDOT, the Si/PEDOT solar cell shows excellent stability. These results point out a new route to develop low-cost, high performance and high stability Si/organic hybrid solar cells .
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
NPG Asia Materials
·
2017
·Vol. 9
·期 7
·e405
·
IF 9.157
Shi Wei,Yao Qin,Qu Sanyin,Chen Hongyi,Zhang Tiansong,Chen Lidong
The inhibitor-dependent poly(3,4-ethylenedioxythiophene) (PEDOT) fabrication suffers major problems in the areas of controllability and film thickness. In this work, we found that anions play a key role in both the polymerization and the structure of PEDOT. As a precursor, anions greatly influence the reaction rate and oxidant solubility. In its role as a counter-ion, the anions also affect chain conductance and crystal growth. With these behaviors in mind, a self-inhibited polymerization approach using novel oxidants with appropriate anions was successfully developed to facilitate the fabrication of high quality in situ polymerized PEDOT films and solve the thickness limitation problem. Inhibitor-free heavy oxidative solutions with weakly basic anions enable the spin-coating of thick and homogeneous oxidant layers and also effectively inhibit both the crystallization of the oxidant and H + formation throughout the polymerization process. PEDOT: dodecylbenzenesulfonate (PEDOT:DBSA) exhibits the highest performance among all candidates due to its appropriate anion basicity and low steric effect. An extremely high doping level of 42.9% is achieved, and an electrical conductivity of ~1100 S cm −1 is successfully maintained for film thicknesses between 310 nm and 1.79 μm. In addition, the thermoelectric power factor (RT) for pristine films was improved to 77.2 μW mK −2 from 69.6 μW mK −2 by the dedoping treatment. This study provides a new approach for fabricating high performance PEDOT thick films using anion-based design.
研究领域:
材料科学
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化学工程
·
电子材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Zihan Zhong,Qingqing Shao,Baoxin Ni,Dazhi Wang,Zixi Xie,Libang Xu,Yakui Mu,Qisen Wang,Tan Wang,Yiwen Feng,Jingwei Hou,Kun Jiang,Anthony K. Cheetham,Tiesheng Wang
Controlling the nanostructure of conducting polymers (CPs) is essential for enhancing their performance in energy storage applications. Existing CPs often suffer from low effective pseudocapacitance due to poor ion permeability. In this study, we introduce a novel approach using hydrogen-bonded organic frameworks (HOFs) to synthesize porous poly(3,4-ethylenedioxythiophene) (PEDOT). We incorporated 3,4-ethylenedioxythiophene (EDOT) into HOF-16 by leveraging the flexible hydrogen-bonding interactions. Following the polymerization of EDOT, the HOF-16 was removed to form a porous interconnected network of PEDOT. Electrochemical evaluations demonstrated that the porous PEDOT exhibited significantly enhanced performance, including high specific capacitance, excellent rate capability, and ∼95% capacitance retention after 10,000 cycles. Compared to PEDOT prepared without HOF, the porous PEDOT showed a 34% increase in specific capacitance and a 10% improvement in 10,000-cycle capacitance retention. This work highlights the potential of HOF-enabled synthesis in creating high performance conducting polymers, offering a new avenue to improve supercapacitor performance, particularly in capacitance and cycling stability.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POROUS MATERIALS
·
2022
·Vol. 30
·期 3
·767-774
·
IF 2.523
Lin Yonghui,Zhao Xiaojun,Jin Qi,Chen Yang,Yang Weiting,Pan Qinhe,Chen Yan,Wang Fuxiang
The shortage of fresh water resources is becoming more and more serious, which endangers human survival and social progress. Atmospheric water harvesting technology is expected to be one of the ideal ways to break through this predicament. However, in the special circumstances such as offshore place or island, the equipment of atmospheric water harvesting is required not only to have good capture ability of water molecules, but also to have the advantages of stable performance, low energy consumption, and simply employment. We designed and prepared a composite of microtube-filled vesicle-like PEDOT wrapped into honeycomb chitosan by vaper-phase polymerization. Under the static adsorption, it reaches high water molecules uptake of 154.0 wt% at 98% relative humidity, and captured water molecules aggregate into droplets to achieve the direct collection without any external force. Moreover, this composite has low density and good stability under high humidity, which indicates its promising application for atmospheric water harvesting in the coastal and offshore areas.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
NPG Asia Materials
·
2022
·Vol. 14
·期 1
·1-8
·
IF 10.761
Shi Wei,Yao Qin,Donghui Wang,Qu Sanyin,Chen Yanling,Lee Kyu Hyoung,Chen Lidong
Nonferric oxidant precursors have the unique advantage of directly polymerizing poly(3,4-ethylenedioxythiophene) (PEDOT)-inorganic composites. However, due to limited solubility and unmatched oxidation potentials, most oxidants only produce powders or porous materials. To obtain high-quality films with improved homogeneity and controllable particle sizes, the oxidants should be adaptable to high-standard PEDOT film fabrication techniques such as vapor phase polymerization (VPP). In this work, we discovered for the first time a nonferric metal salt suitable for the VPP process. With the addition of an Fe(III) salt to stabilize the reaction and adjust the oxidant ratio, micron-thick antibacterial S-PEDOT-Ag quantum dot (QD) composite films with tunable Ag wt% can be synthesized in one facile step. With a low Ag loading of ~0.2 wt%, the film exhibited an optimized power factor of 63.1 μW/mK 2 , which is among the highest values thus far reported for PEDOT-metal composites. Increase of the Ag(I) concentration in the precursor to a certain level may lead to minor decomposition of the polymer followed by the formation of Ag 2 S particles.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Research
·
2024
·
IF 8.5
Wanke Cheng,Zihao Zheng,Xiaona Li,Ying Zhu,Suqing Zeng,Dawei Zhao,Haipeng Yu
The conductive polymer poly-3,4-ethylenedioxythiophene (PEDOT), recognized for its superior electrical conductivity and biocompatibility, has become an attractive material for developing wearable technologies and bioelectronics. Nevertheless, the complexities associated with PEDOT’s patterning synthesis on diverse substrates persist despite recent technological progress. In this study, we introduce a novel deep eutectic solvent (DES)-induced vapor phase polymerization technique, facilitating nonrestrictive patterning polymerization of PEDOT across diverse substrates. By controlling the quantity of DES adsorbed per unit area on the substrates, PEDOT can be effectively patternized on cellulose, wood, plastic, glass, and even hydrogels. The resultant patterned PEDOT exhibits numerous benefits, such as an impressive electronic conductivity of 282 S·m−1, a high specific surface area of 5.29 m2·g−1, and an extensive electrochemical stability range from −1.4 to 2.4 V in a phosphate-buffered saline. To underscore the practicality and diverse applications of this DES-induced approach, we present multiple examples emphasizing its integration into self-supporting flexible electrodes, neuroelectrode interfaces, and precision circuit repair methodologies.
研究领域:
材料科学
·
生物医学工程
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale Advances
·
2021
·Vol. 3
·期 15
·4519-4527
·
IF 4.553
Pingping Wu,Jingxia Wang,Lei Jiang
Monitoring and post-processing of organic solvents are important for environmental protection. Challenges remain in the development of a universal material which can detect any solvent with a large stopband shift and show excellent stability. Herein, we demonstrate a poly 3,4-ethylenedioxythiophene inverse opal (PEDOT-IO) with a large stopband shift toward various solvents based on the insolubility/superoleophilicity properties. The PEDOT-IO film was fabricated by the potentiostatic polymerization of 3,4-ethylene dioxythiophene using a three-electrode system, infiltrating the interstices of the photonic crystal template with PEDOT and subsequently removing the template. The surface of the PEDOT-IO film presented a composite structure: interconnected pores and hollow shells. When the solvent was introduced into the voids of PEDOT-IO film, the effective refractive index (n) of the whole sample increased due to the replacement of air with the solvent, and the pores and hollow shells showed different degrees of swelling. The synergistic effect of increased n and volume expansion contributed to a large redshift of the stopband of the PEDOT-IO film. PEDOT-IO film exhibited excellent resistance to various solvents and high/low temperature. This work further enriches the application of conductive polymers in solvent-responsive PC sensors and provides a novel means of creating PC-based optical materials and devices.
研究领域:
材料科学
·
环境科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Xinmeng Zhang,Wenjing Liu,Peizhong Feng
Designing and constructing a low-cost, short-cycle, and high cost-effectiveness dopamine (DA) electrochemical sensor is essential for developing biomedicine and human health monitoring. In this paper, the CC/NiCoP composite was prepared by electrochemical deposition of amorphous NiCoP nanoparticles on the carbon cloth (CC) surface using cyclic voltammetry. The synthesized NiCoP was unstable when it was tested in a phosphate-buffered saline solution. The NiCoP can be used for DA detection in a neutral environment of phosphate-buffered saline solution through secondary electrochemical deposition coating poly(3,4-ethylenedioxythiophene) (PEDOT). Amorphous NiCoP lacks a long-range ordered crystal structure, and local atomic vacancies or misalignments can lead to more atomic defects. These defects provide more catalytic active sites, which can effectively participate in electrochemical reactions, making amorphous materials more active than crystalline materials. The CC/NiCoP@PEDOT composite combines the excellent properties of amorphous NiCoP, such as high catalytic activity and good stability, with the good conductivity of the three-dimensional CC substrate and the high molecular polymer PEDOT. The constructed DA electrochemical sensor based on CC/NiCoP@PEDT composite exhibits a low level of detection limit (0.12 nM), excellent stability, and immunity to interference. This study demonstrates the prospects of electrodeposition methods in the field of electrochemical sensing and provides an approach for the design and construction of high-performance electrochemical sensors.
研究领域:
生物医学
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Lei Gao,Ruirui Yue,Jingkun Xu,Zhen Liu
In this research, a ternary nanocomposite, based on iron oxide (Fe 2 O 3 ), reduced graphene oxide (rGO) and PEDOT had been successfully synthesized via one-pot method for the electrochemical detection of caffeine. The obtained nanocomposite Fe 2 O 3 /PEDOT/rGO was characterized by SEM, EDS, XRD, XPS and Raman spectroscopy to confirm the morphology, structure and composition. In addition, the electrochemical behaviors of caffeine on the nanocomposite modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. The results demonstrated that the Fe 2 O 3 /PEDOT/rGO nanocomposite exhibited excellent electrocatalytic activity to caffeine. Under the optimized conditions, the Fe 2 O 3 /PEDOT/rGO modified glassy carbon electrode showed a wide linear range of 1.0 × 10 -6 to 8.0 × 10 -4 M with the correlation coefficient of 0.992 and a detection limit of 3.3 × 10 -7 M for the determiantion of caffeine. Furthermore, the modified electrode displayed high sensitivity and selectivity, good reproducibility and long-term stability in subsequent experiments. It was also successfully used to determine caffeine in beverage samples.
研究领域:
材料科学
·
电化学
·
分析化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）