JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Tianyu Li,Zhichao Ye,Yu Cai,Tingting Tu,Bin Zhang,Shanshan Zhang,Lu Fang,Xiyu Mao,Shiyi Xu,Xuesong Ye,Bo Liang
Conductive hydrogels have shown promise in a wide range of electrochemical sensing applications. Decorating conductive hydrogel on the electrode surface is a key technical challenge. Herein, we have constructed a method to achieve better and stable attachment between conductive hydrogel and electrode by surface rebuilding technique. Electrochemical gelation of poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonate) (PEDOT:PSS) hydrogels on gold electrodes that have undergone surface rebuilding method were then made into several biosensors for electrochemical sensing of H 2 O 2 , glucose, dopamine (DA) and levodopa (L-Dopa) respectively. The H 2 O 2 sensor shown a linear range from 0 to 1 mM with ultrahigh sensitivity of 1988.66 μA⋅cm −2 ⋅mM −1 . The sensor responded to glucose ranging from 0 to 14 mM with high sensitivity of 198.047 μA⋅cm −2 ⋅mM −1 . The sensor responded to DA ranging from 0 to 1 mM with high sensitivity of 145.047 μA⋅cm −2 ⋅mM −1 , and to L-Dopa ranging from 0 to 0.5 mM with high sensitivity of 982.21 μA⋅cm −2 ⋅mM −1 . We initially verify the gold surface rebuilding method in solving the problem of difficult combination of electrochemical mediated hydrogel and electrode, the method could be explored further for various promising applications in hydrogel electronics in the future.
研究领域:
材料科学
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电化学
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生物传感器
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 7
·1-11
·
IF 5.3
Li Junhong,Huang Hui,Xie Shuqian,Zhang Huan,Huang Xinyu,Yue Ruirui,Xu Jingkun,Duan Xuemin
A promising electrochemical sensing platform for the detection of ponceau 4R in food has been fabricated based on the carboxylated graphene oxide (GO-COOH), metal–organic framework (MOF) UIO-66-NH 2 , and poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). To this end GO-COOH was covalently coupled with UIO-66-NH 2 through amide reaction, endowing the material (GO-CONH-UIO-66) unique hierarchical pores and high chemical stability and as a result improving the conductivity of MOF and the dispersion of GO. After the addition of PEDOT:PSS into GO-CONH-UIO-66, the continuity and conductivity of the composite (PEDOT:PSS/GO-CONH-UIO-66) have been further enhanced, due to the high conductivity, favorable film-forming, and hydrophilic properties of PEDOT:PSS. Systematic electrochemical experiments confirm that the PEDOT:PSS/GO-CONH-UIO-66/GCE shows satisfactory electrochemical sensing properties towards the detection of ponceau 4R, with a wide linear detection range of 0.01–30 μM, a low limit of detection of 3.33 nM, and a high sensitivity of 0.606 μA μM −1 cm −2 . The PEDOT:PSS/GO-CONH-UIO-66 sensing platform was successfully used to detect ponceau 4R in beverage, and the detection results were compared with high-performance liquid chromatography. As a result, the PEDOT:PSS/GO-CONH-UIO-66 composite shows a promising application prospect for rapid detection of ponceau 4R in food and will play significant role in food safety detection and supervision. Graphical Abstract
研究领域:
分析化学
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食品科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jiqiang Qiao,Nianyao Chai,Yuzhe Feng,Jiawei Li,Xiangyu Chen,Yunfan Yue,Sheng Li,Zhongle Zeng,Jiakang Zhou,Huan Wang,Xuewen Wang,Wenyu Zhao,Qingjie Zhang
Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) has garnered significant considerable interest in the field of flexible thermoelectric films owing to its very low thermal conductivity, highly adjustable electrical conductivity ( σ ) and Seebeck coefficient ( S ). However, improving the σ and S of PEDOT:PSS simultaneously remains challenging for achieving efficient thermoelectrics. In this paper, we proposed a two-step process involving femtosecond laser irradiation and ionic liquid (IL) 1-Ethyl-3-MethylImidazolium DiCyAmide treatment to enhance the thermoelectric properties of PEDOT: PSS thin films. This finding revealed that the increase in PEDOT: PSS conductivity was attributed to both laser irradiation and the post-treatment with IL, in which the former enabled the efficient elimination of insulating PSS from the surface of the conductive polymer, the latter further contributed to the decoupling of PEDOT and PSS. The enhanced Seebeck coefficient was due to the ion exchange resulting from IL post-processing, which regulated the PEDOT doping level. By employing laser irradiation and surface treatment with IL, the modified PEDOT:PSS films showed a S of 20.63 μV·K −1 , a σ of 960.7 S·cm −1 , and a power factor (PF) of 40.89 μW·m −1 ·K −2 . Furthermore, a thermoelectric device was developed which can generate a voltage of 0.8 mV at a temperature difference of 11.7 K.
研究领域:
材料科学
·
热电学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Guojun Chang,Lingjun Zeng,Lan Xie,Bai Xue,Qiang Zheng
Harsh freezing and high-humidity environments lay down paramount bottlenecks for the utilization prospect of polymeric electromagnetic interference (EMI) shielding materials. Herein, ultrathin and flexible multifunctional EMI shielding MXene/Ag nanowires/poly(3, 4-ethylene dioxythiophene):polystyrene sulfonate (MXene/AgNWs/PEDOT:PSS) composite coatings were fabricated via the facile drop-casting of MXene/AgNWs/PEDOT:PSS mixture dispersion and subsequent hydrophobic spraying modification. Profited by the superior electrical conductivity of both polymer host and filler guests, MXene/AgNWs/PEDOT:PSS coatings exhibit the preeminent EMI shielding effectiveness (SE) of 31.5 dB at a rather small thickness of 10 µm, far surpassing that of most the reported polymer-based EMI shielding composites at the similar thickness. Moreover, MXene/AgNWs/PEDOT:PSS coatings also hold excellent electro/photo-thermal transition ability and fascinating water repellency, which ensures their normal application on cold and damp conditions. Interestingly, the intensive interlocking effect of 1 D AgNWs and 2 D MXene allows the wonderful interfacial adhesion and mechanical durability of MXene/AgNWs/PEDOT:PSS coatings. This study provides a valuable insight into the design and construction of multifunctional polymeric coatings for EMI shielding of high-power and high-frequency electronics in cold and high-humidity environments.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Mengxin Tao,Guodong Liu,Yaoli Wang,Jianing Wang,Wenliang Zhang,Zhijian Li
The electrode optimization and rational design are of great significance for the performance enhancement of self-powered electrochromic devices (ECDs). It can be effectively enhanced by developing interfacial properties of electrodes, which can promote the internal ion transport within functional components consisting of an electrode, electrochromic layer, and electrolyte layer and thus obtain performance improvement of fabricated devices. This work aims to construct the electrode of poly(3,4-ethylenedioxythiophene): polystyrenesulfonate (PEDOT:PSS) on different substrates and promote interface performance of the prepared electrodes via inheriting the surface topography of substrates. Besides, the prepared PEDOT:PSS electrodes as a dual-function layer including the electrochromic and electrode layer are employed to assemble the ECDs. It is found that the intrinsic roughness of the paper substrate can facilitate the electrochemical performance of the prepared PEDOT:PSS electrode on it effectively, thereby showing a superior electrochemical surface area and diffusion coefficient as well as a lower charge-transfer resistance of 13.56 Ω. Similarly, for the prepared self-powered ECD on the paper substrate, it also indicates a high light absorption property (0.413), well-defined electrochromic contrast (33.09), fast switching (τc = 4.0 s, τb = 6.8 s), high coloration efficiency (92.275 cm2 C–1), high areal capacity (10.93 mAh m–2) at 0.01 mA cm–2, and lower equivalent series resistance (176.2 Ω) in comparison to parallel ECDs on the PET and glass substrate. Leveraging the intrinsic roughness of the substrate is able to enhance the electrochemical performance of electrodes, which can also provide a new strategy for the construction of high-performance self-powered ECDs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xiaoning Ren,Ming Yang,Taotao Yang,Chao Xu,Yongqin Ye,Xiongni Wu,Xing Zheng,Bin Wang,Ying Wan,Zhiqiang Luo
Conductive polymer hydrogels (CPHs) hold significant promise in broad applications, such as bioelectronics and energy devices. Hitherto, the development of a facile and scalable synthesis method for CPHs with high electrical conductivity and biocompatibility has still been a challenge. Herein, we demonstrate highly conductive PPy–PEDOT:PSS hybrid hydrogels which are prepared by a simple solution-mixing method. This fabrication method involves the mixing of a pyrrole monomer with a PEDOT:PSS dispersion, followed by in situ chemical oxidative polymerization to form polypyrrole (PPy). The electrostatic interaction between negatively charged PSS and positively charged conjugated PPy facilitates the formation of PPy–PEDOT:PSS hybrid hydrogels. The conductivity of the PPy–PEDOT:PSS hybrid hydrogels is 867 S m–1. The PPy–PEDOT:PSS hybrid hydrogels show excellent biocompatibility. Moreover, the PPy–PEDOT:PSS hybrid hydrogels have a hierarchical porous structure which facilitates the 3D cell culture within the hydrogels. The PPy–PEDOT:PSS hybrid hydrogels exhibit excellent in situ biomolecular detection and real-time cell proliferation monitoring performance, indicating their potential as highly sensitive electrochemical biosensors for bioelectronics applications. Our strategy for the fabrication of CPHs with the electrostatic interaction between the negatively charged conductive polymer and positively charged conductive polymer would provide new opportunities for the design of highly conductive conjugated hydrogels for bioelectronics applications and energy devices.
研究领域:
生物电子学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ORGANIC ELECTRONICS
·
2016
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IF 3.471
Xu Huang,Heng Guo,Jian Yang,Kai Wang,Xiaobin Niu,Xiaobo Liu
Graphene oxide (GO) with single layer was moderately reduced at 200 °C for 4 h under N 2 . Then the moderately reduced graphene oxide (rGO) water solution was employed as an additive to tune the properties of conventional poly(ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) solution. It's found that the incorporation of rGO into PEDOT:PSS nearly did not change its transparency, hydrophilic property , or the surface roughness . So, the rGO/PEDOT:PSS composite was used as a hole transport layer (HTL) to fabricate perovskite solar cells (PSCs). As a result, PSCs with rGO/PEDOT:PSS as HTL exhibit improved power conversion efficiency than that of PSCs with PEDOT:PSS as HTL. Our findings show that moderately reduced rGO/PEDOT:PSS could be an efficient HTL to improve power conversion efficiency of PSCs.
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
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 44
·15910-15917
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IF 7.393
Zhen Wang,Yue Peng,Yongsheng Lu,Xiaosheng Tang,Xing Tan,Zhenshan Liang,Qiang Huang,Fei Qi,Nan Zhang,Weiwei Chen
With solution-processability, low-temperature proper energy level and superior stability, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is one common hole-transport material for the quantum dot light-emitting diode (QLED) application. However, the conductivity of the traditional PEDOT:PSS is very low, which has an adverse effect on QLED devices. Herein, one surface-annealing method for the PEDOT:PSS film to exchange their original composition and surface morphology is proposed. The advantage of this approach lies in the fact that the conductivity of the PEDOT:PSS film annealed with toluene (1.25 S cm−1) and ethylene glycol (EG, 10.52 S cm−1) are obviously improved compared with the air-annealing method (0.13 S cm−1). The difference is that the EG-washed PEDOT:PSS film shows a relatively rough surface with more PEDOT domains, whereas the toluene treated PEDOT:PSS film can promote the formation of a smooth, PSS-dominated surface and change the PEDOT chain structure from coiled to linear, thus, the conductivity of the PEDOT:PSS film is enhanced. As a result, the QLED device achieves a maximum luminance of 31 140 cd m−2 and power efficiency of 13.4 lm W−1, showing 48% and 25% enhancements, respectively, compared to the control device. This work provides an efficient approach for improving of perovskite QLED performance.
研究领域:
材料科学
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电气工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2024
·Vol. 130
·期 3
·1-12
·
IF 2.5
Yang Jiaqi,Fan Yanli,Xiong Xinliang,Jiang Qifeng,Li Ping,Jian Jie,Chen Longcong
In recent years, hydrogels had a wide range of applications in wearable devices, human health monitoring, or implantable sensors because of their good properties such as stretchability, conductivity, frost resistance, and transparency. However, the simultaneous integration of excellent mechanical properties and high electrical conductivity in a hydrogel sample still needs to be improved. In this work, silk fibroin (SF) and poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) were introduced into a poly(vinyl alcohol)/poly(acrylic amide) (PVA/PAM) double-network hydrogel to prepare PVA/PAM/SF/PEDOT:PSS hydrogel electrolytes via a one-pot method. Adding SF also enhances the mechanical properties of the hydrogel, making it three times stronger than the PVA/PAM double-network hydrogel. The hydrogel is versatile, with a strain range of 1–300%, making it an ideal resistive sensor for monitoring body pressure. More importantly, due to the hydrogel’s adhesion strength of approximately 665.8 kPa, the hydrogel can adhere to other surfaces during the detection process, significantly reducing the signal loss due to insufficient adhesion. In addition, the hydrogel also exhibits excellent electrical conductivity, can sensitively detect human limb movement, and can be applied to flexible electronic products such as electronic skin and soft robots.
研究领域:
材料科学
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生物医学工程
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柔性电子学
·
传感器技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Mohamed M. Abdelaal,Mohammad Alkhedher
The energy storage market necessitates an increase in the specific capacity of battery materials, particularly cathodes, to meet growing demands. Manganese (Mn) substitution of lithium iron phosphate (LFP) cathodes presents a promising avenue, offering high specific capacity and operability at elevated voltages. However, during cycling, the dissolution of Fe/Mn ions into the electrolyte leads to capacity fading. In this study, we enhance the specific capacity of LFP by Mn substitution in the iron position at various ratios (0.1, 0.2, 0.3, and 0.4). LiFe 0.6 Mn 0.4 PO 4 exhibits the highest capacity of 159.1 mAh g -1 at 0.1C with an initial Coulombic efficiency of 97.9 %. This improvement stems from an enhanced lithium diffusion coefficient, increasing from 1.86 × 10 –14 cm 2 s -1 for pristine LFP to 2.46 × 10 –12 cm 2 s -1 for LiFe 0.6 Mn 0.4 PO 4 . However, LiFe 0.6 Mn 0.4 PO 4 demonstrates the poorest capacity retention among the substituted samples, reaching 78.4 % over 100 cycles due to severe Fe/Mn ion dissolution. To address this issue, we coat Mn-substituted LFP with poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and lithiated Nafion (LN) polymer, which offer high electronic and lithium-ion conductivity, respectively. This coating layer enhances the capacity retention of LiFe 0.6 Mn 0.4 PO 4 to 90.1 % at 0.2C after 100 cycles, effectively mitigating active material loss during charge-discharge processes. This study demonstrates that PEDOT:PSS-LN can improve the electronic and ionic conductivity of cathode materials and maintain high capacity retention during cycling.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Chemosensors
·
2024
·Vol. 13
·期 1
·3
·
IF 3.7
Jiaying Sun,Zhuoru Huang,Xiaojing Zhang,Hangming Xiong,Weijie Yu,Shimeng Mou,Wenwu Zhu,Hao Wan
Methane is a common intestinal gas that has been linked to a variety of gastrointestinal disorders. In this study, we prepared a LIG-based electrochemical sensor modified with PEDOT:PSS/Au-Pt nanocomposites for high-sensitivity methane detection. LIG’s high porosity, flexibility, and excellent electrical conductivity are beneficial for electrochemical detection. The PEDOT:PSS film is electrodeposited on the electrode surface to amplify the signal further. The synergistic effect of bimetallic nanocomposites can improve the electrochemical catalytic activity and increase the specific surface area and the advantages of active sites. The experimental results show that the LIG sensor has a wide linear detection range (2–500 ppm), a low detection limit (about 0.36 ppm), high sensitivity, and good repeatability. The sensor is easy to manufacture, is low-cost, operates at room temperature, has high sensitivity, has a low detection limit, and is expected to be used for methane breath detection in the future.
研究领域:
生物医学工程
·
材料科学
·
传感技术
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2017
·Vol. 9
·期 4
·1-11
·
IF 4.849
Luo Hui,Lin Xuanhuai,Hou Xian,Pan Likun,Huang Sumei,Chen Xiaohong
As a hole transport layer, PEDOT:PSS usually limits the stability and efficiency of perovskite solar cells (PSCs) due to its hygroscopic nature and inability to block electrons. Here, a graphene-oxide (GO)-modified PEDOT:PSS hole transport layer was fabricated by spin-coating a GO solution onto the PEDOT:PSS surface. PSCs fabricated on a GO-modified PEDOT:PSS layer exhibited a power conversion efficiency (PCE) of 15.34%, which is higher than 11.90% of PSCs with the PEDOT:PSS layer. Furthermore, the stability of the PSCs was significantly improved, with the PCE remaining at 83.5% of the initial PCE values after aging for 39 days in air. The hygroscopic PSS material at the PEDOT:PSS surface was partly removed during spin-coating with the GO solution, which improves the moisture resistance and decreases the contact barrier between the hole transport layer and perovskite layer. The scattered distribution of the GO at the PEDOT:PSS surface exhibits superior wettability, which helps to form a high-quality perovskite layer with better crystallinity and fewer pin holes. Furthermore, the hole extraction selectivity of the GO further inhibits the carrier recombination at the interface between the perovskite and PEDOT:PSS layers. Therefore, the cooperative interactions of these factors greatly improve the light absorption of the perovskite layer, the carrier transport and collection abilities of the PSCs, and especially the stability of the cells.
研究领域:
材料科学
·
能源技术
·
光伏器件
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）