NANOTECHNOLOGY
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2021
·Vol. 33
·期 4
·045405
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IF 3.874
Hui Liu,You Tao,Huijuan Sun,Tian-Xiong Wang,Zhisheng Peng,Jiyou Jin,Zhongpu Wang,Kang Peng,Haonan Wei,Yong Jun Li,Bao-Hang Han,Lianfeng Sun
Polyaniline, as a kind of conductive polymer with commercial application prospects, is still under researches in its synthesis and applications. In this work, polyaniline was fabricated on flexible substrates including carbon cloths and polyethylene naphthalate by in situ electropolymerization method. The synthesized flexible electrodes were characterized by scanning electron microscopy, High resolution transmission electron microscope, atomic force microscope, Fourier transform infrared, x-ray diffraction, and x-ray photoelectron spectroscopy. Owing to the conductivity and the reversible redox property, the polyaniline/carbon cloth electrodes show excellent properties such as decent supercapacitor performance and good detection capability toward ascorbic acid. As supercapacitors, the electrodes exhibit a specific capacitance as high as 776 F g–1 at a current density of 1 A g–1 and a long cycle life of 20 000 times in the three-electrode system. As ascorbic acid sensors, the flexible electrodes demonstrate stable response to ascorbic acid in the range of 1–3000 μM with an outstanding sensitivity (4228 μA mM–1 cm–2), low detection limit (1 μM), and a fast response time. This work holds promise for high-performance and low-cost flexible electrodes for both supercapacitors and non-enzymatic ascorbic acid sensors, and may inspire inventions of self-powered electrochemical sensor.
研究领域:
材料科学
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电化学
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传感技术
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2025
·
IF 3.9
He Xianhong,Tian Wei,Ahmed Jahangeer,Bai Zhengyu,Yang Lin
Bismuth vanadate (BiVO 4 , BVO) is an ideal photoabsorber for the photoelectrocatalytic water splitting, but its performance and photostability limit its commercial application. Therefore, enhancing the catalytic performance and stability becomes an increasingly crucial issue. In this study, we report a composite catalytic material poly (3,4-ethylenedioxythiophene, EDOT) (PEDOT)-modified β-FeOOH nanosheets loading onto the surface of BVO through the hydrolysis of Fe 3+ in BVO semiconductor film and the catalytic polymerization of EDOT form the conductive polymer. The structure facilitates the catalytic process, and when it is used in photoelectrocatalysis oxygen evolution reaction, it exhibits a photocurrent density of 3.3 mA cm −2 at 1.23 V versus standard hydrogen electrodes. Mechanistic studies show that the introduction of PEDOT-modified β-FeOOH optimized the electrode/electrolyte contact interface, adjusted the defect state, and provided catalytically active sites during the catalytic process. This study provides a feasible idea for exploring the catalytic mechanism of BVO-based photoelectrode and designing catalysts.
研究领域:
材料科学
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电化学
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能源转换
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DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Wenting Cao,Haotian Wang,Xueji Zhang,Yongzhong Wang,Xiaofeng Jin
Current continuous glucose monitoring (CGM) technologies often require complex manufacturing processes, leading to high supply costs. Thus, there is an urgent need to develop a reliable and cost-effective alternative for continuous glucose monitoring. As a core technology in CGM based on electrochemical technology, redox mediator materials directly affect the safety and reliability of products. However, the selection of redox mediators available for commercially viable CGM systems remains extremely limited, highlighting an urgent need to develop novel redox mediator materials through rational design. Conventional immobilization techniques for glucose oxidase (GOx) and mediators are not compatible with continuous operating conditions, and immobilized mediators may also suffer from leakage, leading to limited stability, which significantly restricts their applications in CGM. Herein, a promising ruthenium-based redox mediator was identified for GOx through molecular docking. The as-prepared redox mediator and GOx were immobilized by one-step electropolymerization of the conductive polymer. The fabricated glucose sensor exhibiting a linear range of 2 - 22 mM and a sensitivity of 17.81 μA mM −1 cm −2 . The glucose sensor can maintain long-term stability for up to 21 days in vitro. The strategy proposed in this study provides a highly attractive tool for commercial CGM and exhibits great potential for practical applications.
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DOI
PubMed
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2021
·Vol. 60
·期 5
·794-802
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IF 0
Jiarui Yu,Nan Gao,Xiaowen Xie,Xing Xin,Zhanqi Li,Shuai Chen,Jingkun Xu
Thermally healing capability of cracks and defects is important and urgent for the safe operation and life extending of electric materials and devices. Here, by the combination of thermally driven reversible Diels–Alder (DA) interaction and in-situ chemical oxidative polymerization of 3,4-ethylenedioxythiophene (EDOT), a series of intrinsically conductive poly(3,4-ethylenedioxythiophene) (PEDOT)/DA composites possess intrinsically self-healing property under low-temperature (reverse DA reaction at 100°C; DA crosslinking at 60°C) stimulus were achieved. The crosslinking DA bonding reactions are multiple from the co-existence of pre-synthesized macromolecular polyurethane attached DA units (PU-DA) and 2,4-hexadiyne-1,6-diol (DADOL) in the films. PU-DA involved in the polymerization process of EDOT to endow PEDOT with outstanding solution-processability, uniform film making, and structural self-healing capability, while DADOL was added to enhance the cross bonding between polymer chains. This work will accelerate the research and application development of intrinsically self-healing conducting polymers for commercial capacitors, antistatic coatings, implantable, printable electronics, and so on. Graphical
研究领域:
材料科学
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电子工程
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DOI
JOURNAL OF MEMBRANE SCIENCE
·
2011
·
IF 3.673
Song Zhao,Zhi Wang,Xin Wei,Boran Zhao,Jixiao Wang,Shangbao Yang,Shichang Wang
Emeraldine base polyaniline (PANiEB), which is mostly soluble in N-methyl-2-pyrrolidone (NMP) and slightly soluble in water, was used as the additive to prepare polysulfone (PSf)/PANiEB membrane via immersion precipitation process. The behavior of PANiEB during membrane formation and the effect of PANiEB addition on membrane structure and performance were investigated. During membrane formation, a portion of PANiEB, located near the surface of the casting film, could diffuse out of the casting film along with NMP into the coagulation bath and act as pore forming agent. The other portion of PANiEB could remain in the prepared membrane and act as hydrophilic modifier. All the PSf/PANiEB membranes had higher porosity, larger surface pore size, more vertically interconnected finger-like pores and less macrovoids than PSf membrane. PSf/PANiEB membranes exhibited stable pure water flux during membrane compaction at 0.30 MPa TMP and slower pure water flux decline at 0.5 MPa TMP than PSf/polyvinylpyrrolidone (PVP) membranes. Pure water fluxes of PSf/PANiEB membranes were 1.7–2.8 times that of PSf membrane while rejection property including bovine serum albumin, egg albumin and trypsin rejections changed slightly. BSA ultrafiltration experiment showed that PSf/PANiEB membranes had higher flux and better antifouling property than PSf membrane.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
Frontiers in Chemistry
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2022
·
IF 5.545
Liu Yongbin,Liu Zhengwei,Gao Jinghui,Wu Ming,Lou Xiaojie,Hu Yanhua,Li Yong,Zhong Lisheng
Dielectrics with improved energy density have long-standing demand for miniature and lightweight energy storage capacitors for electrical and electronic systems. Recently, polyvinylidene fluoride (PVDF)-based ferroelectric polymers have shown attractive energy storage performance, such as high dielectric permittivity and high breakdown strength, and are regarded as one of the most promising candidates. However, the non-negligible energy loss and inferior temperature stability of PVDF-based polymers deteriorated the energy storage performance or even the thermal runaway, which could be ascribed to vulnerable amorphous regions at elevated temperatures. Herein, a new strategy was proposed to achieve high energy density and high temperature stability simultaneously of PVDF/PMMA blends by in situ polymerization. The rigidity of the amorphous region was ideally strengthened by in situ polymerization of methyl methacrylate (MMA) monomers in a PVDF matrix to obtain PVDF/PMMA blends. The atomic force microscopic study of the microstructure of etched films showed the ultra-homogenous distribution of PMMA with high glass transition temperature in the PVDF matrix. Consequently, the temperature variation was remarkably decreased, while the high polarization response was maintained. Accordingly, the high energy density of ∼8 J/cm3 with ∼80% efficiency was achieved between 30 and 90 °C in PVDF/PMMA films with 39–62% PMMA content, outperforming most of the dielectric polymers. Our work could provide a general solution to substantially optimize the temperature stability of dielectric polymers for energy storage applications and other associated functions.
研究领域:
材料科学
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聚合物科学
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电气工程
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能量存储
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Shigui Peng,Kai Zhang,Min He,Qiao Fan,Lanlan Wei,Shuhao Qin,Tingting Luo,Lijuan Long,Jun Qin,Yufei Liu,Jie Yu
Poly(3,4-ethylenedioxythiophene) (PEDOT) is a prospective thermoelectric polymer owing to high conductivity, low thermal conductivity, and processability. However, the Seebeck coefficient of PEDOT is substantially lower than inorganics, and molecular design strategies to promote this coefficient are yet to be established. Here, the introduction of chloromethyl (-MeCl) on the surface of PEDOT has been established as an effective strategy for elevating its Seebeck coefficient. It was found that the electron-withdrawing effect of -MeCl decreases the highest occupied molecular orbital (HOMO) energy level and increases the oxidation potential of poly(chloromethylated 3,4-ethylenedioxythiophene) (PEDOT-MeCl). The space steric hindrance effect of -MeCl increases the layer spacing of PEDOT-MeCl. Furthermore, -MeCl severely disrupts the localized coplanar structure of PEDOT-MeCl, leading to a more difficult transition of the polariton into a dipolariton. Hence, PEDOT-MeCl is more difficult to be oxidatively doped, and the oxidation level is reduced compared to PEDOT. This ultimately leads to a 22.57% decrease in carrier concentration and a 33.06% increase in Seebeck coefficient for PEDOT-MeCl. This work opens up a new pathway for modulate the Seebeck coefficient of PEDOT.
研究领域:
材料科学
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化学
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DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 25
·255301
·
IF 3.551
Zhijun Luo,Yanan Liu,Ziyu Liu,Duan Wang,Zongsong Gan,Changsheng Xie
The fabrication of poly 3,4-ethylene dioxythiophene (PEDOT) devices generally requires a separated strategy for EDOT polymerization and PEDOT coating, thus increasing th difficulty of their integration. With the goal of insolubility of PEDOT in a common solution, material modifications including grafting vinyl moiety groups on the side chain of the PEDOT can increase its solubility, but also markedly reduce the conductivity. Here, we report direct laser writing of pure EDOT monomer into PEDOT with a feature size of 140 nm. The PEDOT nanowire possesses the high conductivity of 1.28 × 105 S m−1 and can be patterned on solid and flexible substrates with various structures, thus paving the way towards organic highly conductive device fabrication and integration.
研究领域:
材料科学
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有机电子学
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DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 35
·29592-29597
·
IF 3.289
Lei Cao,Qianqiu Tang,Gengchao Wang
Poly(3,4-ethylenedioxythiophene) (PEDOT) is a promising conductive polymer due to its high conductivity and optical transparency. However, two main challenges remain to be solved for its practical application, including improving the humidity stability and water resistance. Here, a novel cross-linkable copolymer of methacryloyloxyethyl isocyanate grafted poly(styrene sulfonate-co-2-hydroxyethyl acrylate) [MOI-P(SS-HEA)] is synthesized by a radical polymerization and condensation reaction. MOI-P(SS-HEA) is used as a multi-functional counter anion to obtain the UV-curable conductive dispersion of PEDOT:MOI-P(SS-HEA). The electrical conductivity, humidity stability, and water resistance of the cross-linked PEDOT:MOI-P(SS-HEA) [PEDOT:MOI-P(SS-HEA)-C] conductive films are investigated. The results indicate that the UV cross-linked reaction significantly improves the humidity stability and water resistance of the PEDOT:MOI-P(SS-HEA)-C conductive film.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2022
·
IF 2.731
Huimin Li,Yapan Shi,Yudong Gao
A new voltammetric sensor, simultaneous electropolymerization of L-Citrulline (L-Cit) and β-cyclodextrin (β-CD) film modified glassy carbon electrode (GCE) was built for the first time. It was used to construct this sensor for quantification of these important pesticides and sensitive determination of metribuzin. The proposed metribuzin sensor displays excellent performance with wide linear range (3.0 × 10−8 ~ 1.0 × 10−6 mol L−1), ultralow detection limit of 10 nM (S/N = 3), and favourable specificity. Also, the sensor was applied for determination of metribuzin in the real samples, the satisfying results are achieved. The results imply that the proposed sensor can be potentially used for the environmental pollution science and environmental analytical chemistry.
研究领域:
环境科学
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分析化学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Jianchun Jiang,Qingmeng Pi,Jiahang Zhou,Yixuan Du,Yunbo Li
Ammonia is increasingly deemed a significant, green sustainable fuel which requires a large number of detection devices. In this study, ultrathin AuNWs/PEDOT:PSS Janus films had been prepared with ultrathin AuNWs film treated with H 2 S which could integrate with PEDOT:PSS film closely. The resulting transparent and flexible Janus film sensor showed the good response and selectivity performance to ammonia gas. Moreover, the sensitivity of Janus film devices to ammonia was greatly improved and the conductivity of the Janus films was kept well with increasing thermal annealing temperature. The limit detection for NH 3 was 500 ppb concentration and the improvement mechanism of the sensing performance was attributed to the increased surface area of conductive polymer . This method provides a universal platform to integrate different materials into Janus films and prepare next-generation flexible detection sensors.
研究领域:
材料科学
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传感技术
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化学工程
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产品关联
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 11
·8719-8728
·
IF 4.6
Piao Luo,Kai Zhang,Nanjie Wu,Lanlan Wei,Shigui Peng,Qiao Fan,Tingting Luo,Yucheng Yin,Xiang Zhang,Yufei Liu,Min He,Jie Yu,Shuhao Qin
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is a promising conductive polymer material, but its acidic nature leads to device deterioration and poor long-term durability. It is usual practice to neutralise PEDOT:PSS solutions with bases, resulting in a decrease of conductivity. The causes of the decline in conductivity remain disputed and uncertain. In this study, three bases (sodium hydroxide, ammonium hydroxide, and imidazole) were employed to treat PEDOT:PSS to investigate their effects on doping level, composition, and structure. The results show that bases may dedope PEDOT:PSS by removing the proton doping from the PEDOT chain. Meanwhile, insulating PSS is removed, and the aggregated structure is optimised to ensure that conductivity is not significantly reduced. The PEDOT:PSS treated with the weak base imidazole showed the least loss of conductivity due to only a modest decrease in doping level and the greatest loss of insulating PSS. Aluminium electrolytic capacitors made using imidazole pH-adjusted solutions have a capacitance ratio of up to 98.28% and an equivalent series resistance of 26 mΩ. These findings provide a valuable reference for developing high electrical characteristics and neutral PEDOT:PSS materials.
研究领域:
材料科学
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电子工程
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产品关联
DOI
PubMed
高影响因子
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