CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Yunzhongze Hu,Minqiang Jiang,Xiaoye Cong,Gongyu Liu,Xiaosu Yi,Xiaoling Liu
In recent years, the demand for efficient and flexible electromagnetic (EMI) shielding has increased dramatically to ensure the stability of electronic devices and protect the body from electromagnetic radiation due to the development of wearable electronics and fifth-generation network communication(5G). Nonwovens made from short-cut recycled carbon fibre have shown potential for use in the EMI shielding area due to their economic and ecological benefits. However, achieving lightweight, high-efficiency, and flexible electromagnetic shielding remains challenging. To address this problem, we constructed a lightweight multifunctional recycled carbon fibre (rCF)/ Ti 3 C 2 T x / Poly (3,4-ethylene dioxythiophene): poly (styrene sulfonate) (PEDOT: PSS) nonwoven fabric with double-layered structure, high electromagnetic shielding efficiency (EMI SE), photothermal effect and good Joule heating performance via simple double vacuum-assisted filtration and hot-pressing strategy. Different sizes of Ti 3 C 2 T x flakes were prepared using improved mild etching, ultrasonic and vortex fluid power-focused delamination (PFD) methods. The rCF/Ti 3 C 2 T x /PEDOT: PSS (MPrCF) nonwoven fabric showed superior conductivity (96.18 S/cm), a favourable EMI shielding efficiency of 63.3 dB, and excellent absolute shielding efficiency of up to 13,900 dB cm 2 *g −1 with only 0.25–0.35 mm thickness due to the unique porous double layered lamination structure and high conductivity. In addition, the new MPrCF veil exhibited superior joule heating and photothermal performance with a saturated temperature of up to 290.2 °C at 5v voltage and 112.3 °C at 300 mW/m 2 light intensity. This new rCF veil shows great potential applications in composite reinforcement fields as a lightweight and scalable electromagnetic shielding material.
研究领域:
材料科学
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电子工程
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高影响因子
Chemosensors
·
2023
·Vol. 11
·期 12
·573
·
IF 4.2
Hanwen Ren,Xiansu Liu,Shanshan Wei,Feijun Zhao,Zhencheng Chen,Haolin Xiao
The progression of Alzheimer’s disease (AD) is positively correlated with the phosphorylation damage of Tau-441 protein, which is the marker with the most potential for the early detection of AD. The low content of Tau-441 in human serum is a major difficulty for the realization of content detection. Herein, we prepared an electrochemical immunosensor modified with Poly(3,4-ethylene-dioxythiophene)-poly (styrene sulfonate) (PEDOT: PSS)/Carboxylated multi-walled carbon nanotube (MWCNTs-COOH) nanocomposites based on electrochemical immunoassay technology for the low-concentration detection of Tau-441. The immunosensor based on the nanocomposite can take advantage of the characteristics of conductive polymers to achieve electrical signal amplification and use MWCNTs-COOH to increase the contact area of the active site and bond with the Tau-441 antibodies on the electrode. The physicochemical and electrical properties of PEDOT: PSS/MWCNTs-COOH were studied by in situ characterization techniques and electrochemical characterization methods, indicating that the immunosensor has high selectivity and sensitivity to the Tau-441 immune reaction. Under optimized optimal conditions, the electrochemical immunosensor detected a range of concentrations of Tau-441 to obtain a low detection of limit (0.0074 ng mL−1) and demonstrated good detection performance through actual human serum sample testing experiments. Therefore, the study provides an effective reference value for the early diagnosis of AD.Keywords:PEDOT: PSS;MWCNTs-COOH;nanocomposites;electrochemical immunosensor;Tau-441
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高影响因子
ANALYST
·
2023
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IF 4.2
Jing Liu,Bing Yin,Xiaobo Liu,Cheng Yang,Shiyu Zang,Shuo Wu
The zeolitic imidazole framework with leaf-shaped morphology (ZIF-L) has a wide range of promising applications in gas storage, battery materials, catalytic reactions, and optoelectronic devices due to its planar leaf-like structure and large surface area. However, the low conductivity, weak catalytic activity, and poor stability in the water dielectric of ZIF-L limited its further practical application. To solve the problems, we added the conductive polymer heterocyclic poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT: PSS) in ZIF-L for the sensitive detection of dopamine (DA). The synthesized composite ZIF-L/PEDOT: PSS (ZIF-L/PEDOT) not only retained the surface morphology of ZIF-L but also exhibited excellent electrochemical properties. The higher electrical conductivity of ZIF-L/PEDOT compared to ZIF-L was due to the enhanced electron transfer at the interface between ZIF-L and PEDOT: PSS. As a result, we developed an electrochemical biosensor based on the ZIF-L/PEDOT composite, which had a limit of detection of 7 nM for DA and a wide linear range from 25 nM to 500 μM. Furthermore, the current dropped was negligible after 28 days, proving the biosensor had excellent stability. Based on the above outstanding performance, the ZIF-L/PEDOT-based biosensor was successfully used to detect DA in human serum samples. These results demonstrated that ZIF-L/PEDOT was expected to play an essential role in disease detection.
研究领域:
材料科学
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电化学
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分析化学
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生物医学工程
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DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 2
·1-17
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IF 21.8
Jia Fengfeng,Lu Zhaoqing,Huang Tao,Xu Mingyuan,Xu Xiaoxu,Guo Zizhan,Wang Shan,Dong Jiayue,Kou Yajie,Hua Li
The extensive use of wireless communication devices has resulted in severe electromagnetic interference (EMI), which has driven the need for advanced EMI shielding materials. In this study, a twin-coated skeleton hybrid aerogel was constructed from para -aramid nanofibers ( p -ANFs), MXene (Ti 3 C 2 T x ) flakes, and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) chains via a freeze-drying route. The robust chains of p -ANFs established a skeleton with a unique porous structure and reversible compressibility. The twin-coated cloth was composed of 28 wt% PEDOT:PSS and 20 wt% MXene, which endowed the PEDOT:PSS/MXene/ p -ANFs hybrid aerogel with efficient EMI shielding properties. The shielding effectiveness (SE) and specific shielding effectiveness (SEE/t) in the X band (8.2–12.4 GHz) reached 41.27 dB and 3063.7 dB·cm 2 ·g −1 , respectively. Interestingly, the EMI shielding capacity was controlled by the PEDOT:PSS and MXene contents and the PEDOT:PSS/MXene ratio. Moreover, the twin-coated hybrid aerogel exhibited outstanding compressive resilience, with a maximum compressive stress of 61.72 kPa under strain of 60% after 500 cycles. In addition, the relationship between the structure deformation and power coefficient of aerogels was constructed. Thus, this study provides a feasible route for fabricating aerogels with compressibility and efficient EMI shielding performance. Graphical
研究领域:
材料科学
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电子工程
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DOI
高影响因子
BIOELECTROCHEMISTRY
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2025
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IF 4.5
Suyun Wei,Jie Zhao,Shaojun Ke,Mingjia Zou,Qingze Han,Guofeng Cui
Highly stable calcium ion selective electrodes (Ca 2+ -ISEs) were developed by drop-casting a layer of poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT: PSS) as an ion-to-electron transfer layer onto Au electrode. The conductive PEDOT: PSS ink was prepared using a metastable liquid–liquid contact (MLLC) doping method, which induced phase separation, removed excess PSS, and significantly enhanced charge transfer kinetics and conductivity. The resulting Ca 2+ -ISEs exhibited excellent electrochemical performance. Potentiometric studies revealed a significant sensitivity of 33.1 ± 0.98 mV/decade (N = 3) with a high potential stability of 3.16 ± 2.53 μV/h. Importantly, Ca 2+ -ISEs combined with the constant potential coulometry method, the lower detection limit was optimized to 8.527 × 10 −8 M (LOD = 3σ/s, N = 3). The performance of the Ca 2+ -ISE system was evaluated in inactivated fetal bovine serum using constant potential coulometry, demonstrating the highest measurement accuracy compared to potentiometric and chronoamperometric. The enhanced PEDOT: PSS-MLLC based Ca 2+ -ISEs combined with the constant potential coulometry method developed in this research demonstrate considerable potential for clinical applications in blood ion analysis.
研究领域:
分析化学
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生物医学工程
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临床检验
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Qiao Fan,Kai Zhang,Lanlan Wei,Yongji Gong,Shuhao Qin,Min He,Yufei Liu,Tingting Luo,Shigui Peng,Jie Yu
Flexible wearable devices have significant potential for diverse applications, prioritizing the development of portable, safe, and stable dry electrodes. This study focused on designing six poly(sodium styrenesulfonate) (PSS) variants with controlled molecular weights (10k-70k), combined with a water-soluble soft polymer, poly(vinyl alcohol) (PVA), to enhance the electrical properties, mechanical strength, and long-term stability of the Poly(3,4-ethylenedioxythiophene) (PEDOT): PSS polymer complex. We systematically examined morphological modifications, interactions, and conductive processes of PVA/PEDOT: PSS films, along with the mechanisms behind their improved stretchability and resistance stability. Results indicate that low molecular weight PSS provides the best mechanical flexibility due to stronger hydrogen bonding with PVA, enhancing elongation at break. However, insulating domains in PSS and PVA impede carrier transport, leading to a discontinuous charge hopping process along the PEDOT backbone, which decreases electrical conductivity. Conversely, high molecular weight PSS exhibits poor dispersion of rigid segments and conductive materials, resulting in decreased electrical and mechanical properties. Notably, with a molecular weight of 34k, the PVA/PEDOT: PSS film exhibits excellent electrical performance and mechanical flexibility, maintains good resistance stability after 1000 loading and unloading cycles at 30% strain, and demonstrates clear and stable electromyography (EMG) signals, indicating vast potential for EMG electrodes.
研究领域:
材料科学
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高分子科学
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生物医学工程
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柔性电子学
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可穿戴设备
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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2023
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IF 4.8
Qi Guo,Yuhao Zhang,Luting Yan,Xiaoya Meng,Yue Wang,Hongguo Zhai,Xiaofeng Chen,Xia Sun,Yemin Guo,Yanyan Zhang
The use of low-cost working electrodes is of great importance for the development of sensor industrialization. Acupuncture needles electrode (ANE) was selected as working microelectrode, a sensor was designed based on poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT: PSS) and chitosan (CS) modified covalent organic frameworks (COFs) (CS/COFs) for detection of cadmium (Cd(II)). First, a mixture of PEDOT and PSS was electrodeposited on the surface of the acupuncture needles to synthesize a PEDOT: PSS as conductive polymeric film to support the electron transfer capability and enhance the conductive efficiency of the sensor. Then, CS/COFs was self-assembled and attached to the PEDOT: PSS/ANE surface by π-π stacking intermolecular interaction forces and the viscosity of CS, thus increasing the specific surface area of the electrode. Differential pulse anodic stripping voltammetry (DPASV) was used as the electrochemical method for detection of Cd(II). And the results indicated that the CS/COFs/PEDOT: PSS/ANE was linearly responsive in the range of 400 μg/L to 2400 μg/L, and the LOD was 13.8 ng/L for Cd(II). The constructed sensor also showed great selectivity, reproducibility, and stability. Additionally, the sensor demonstrated outstanding recovery in the detection of Cd(II) in real sample scallops. This sensing construction method based on acupuncture needles as working electrodes is of great significance to the development of sensor industrialization and aquatic product safety detection.
研究领域:
分析化学
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环境科学
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食品安全检测
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 11
·7008-7021
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IF 4.22
Xu Linan,Zhang Yihe,Feng Lili,Li Xin,An Qi
Transitional metal sulfide ultrathin structures present various advantageous functional properties and hold great promise in energy conversion reactions, but their facile and large-scale preparation are still challenging. Herein, a facile strategy is developed for the preparation of ultrathin MoS 2 nanosheets via an organic matrix-facilitated deposition followed by ultrasonic exfoliation strategy. MoS 2 nanosheets with lateral dimensions around 100 nm and thickness around 10–20 nm are facilely obtained. They present the typical multiple absorbance indicating the unique band structure characteristics of MoS 2 2D nanosheets. Furthermore, the electronic structures of the ultrathin MoS 2 nanosheets can be tuned via controlling their immediate environment in assemblies. In the layer-by-layer interfacial assemblies of (PEDOT:PSS/MoS 2 )n multilayers, the catalytic efficiency of MoS 2 nanosheets is enhanced by a charge transfer process as corroborated by DFT simulation. The catalytic capabilities of the assemblies are optimized by the well-controlled layer-by-layer process and present effective and stable electrochemical HER properties. We expect that this fabrication strategy of 2D MoS 2 nanosheets promote the research of functional materials based on MoS 2 nanosheets and can be extended to the preparation of other nanosheet materials.
研究领域:
材料科学
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能源转换
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电化学
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 2
·81
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IF 5.3
Zhang Haili,Peng Man,Lu Anjiang,Peng Xishun,Wang Cunwei,Zu Caizhen,Bai Zhongchen
A surface-enhanced Raman scattering (SERS) sensor of Au/Ag nanoparticles (NPs) grown on ZnO/polypyrrole@Poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate) (PPy@PEDOT:PSS) film for detecting norfloxacin (NFX) residues in milk is presented. The ZnO/PPy@PEDOT:PSS film was prepared by the electrochemical deposition method. Subsequently, Ag NPs and Au NPs were deposited on the surface of ZnO/PPy@PEDOT:PSS film to form a Au/Ag/ZnO/PPy@PEDOT:PSS film by an electrochemical deposition process and the magnetron sputtering process, respectively. Owing to the charge transfer between the SERS substrate and the NFX molecules, this SERS sensor could effectively identify low-concentration NFX molecules with a limit of detection (LOD) of 0.84 nM. Moreover, it could also recognize NFX residues in milk with recoveries of 91.2% to 108.4%. The SERS sensor of Au/Ag/ZnO/PPy@PEDOT:PSS film had a high sensitivity, excellent long-term stability, and significant potential in food safety monitoring applications. Graphical abstract
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高影响因子
Micromachines
·
2022
·Vol. 13
·期 3
·488
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IF 3.523
Yun Wang,Mixia Wang,Yuchuan Dai,Yilin Song,Yiding Wang,Botao Lu,Yinghui Li,Xinxia Cai
Research on the intracerebral mechanism of insomnia induced by serotonin (5-HT) deficiency is indispensable. In order to explore the effect of 5-HT deficiency-induced insomnia on brain regions related to memory in rats, we designed and fabricated a microelectrode array that simultaneously detects the electrical activity of the dorsal raphe nucleus (DRN) and hippocampus in normal, insomnia and recovery rats in vivo. In the DRN and hippocampus of insomnia rats, our results showed that the spike amplitudes decreased by 40.16 and 57.92%, the spike repolarization slope decreased by 44.64 and 48.59%, and the spiking rate increased by 66.81 and 63.40%. On a mesoscopic scale, the increased firing rates of individual neurons led to an increased δ wave power. In the DRN and hippocampus of insomnia rats, the δ wave power increased by 57.57 and 67.75%. Furthermore, two segments’ δ wave slopes were also increased in two brain regions of the insomnia rats. Our findings suggest that 5-HT deficiency causes the hyperactivity of neurons in the hippocampus and DRN; the DRN’s firing rate and the hippocampal neuronal amplitude reflect insomnia in rats more effectively. Further studies on alleviating neurons affected by 5-HT deficiency and on achieving a highly effective treatment for insomnia by the microelectrode array are needed.Keywords:microelectrode array;insomnia;electrophysiology;dorsal raphe nucleus;serotonin
研究领域:
神经科学
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电生理学
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生物医学工程
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Yan Zhu,Bo Liang,Jijia Zhu,Zhibin Gong,Xiping Gao,Dahu Yao,Jing Chen,Chang Lu,Xinchang Pang
Avoiding crosstalk between strain and temperature detection is crucial for bimodal hydrogel sensors, yet achieving high sensitivity for both parameters while maintaining signal decoupling remains a significant challenge. In this study, a bimodal sensor was developed by locally coating poly (3,4-ethylene dioxythiophene): polystyrene sulfonate (PEDOT: PSS) onto the hydrogel surface, creating distinct regions for strain and temperature detection. These regions form localized strain concentration zones and wrinkle structures, respectively. The localized strain concentration enhances the sensor’s sensitivity from 8.5 to 18.5. Additionally, the sensor demonstrates a low detection limit (0.2 %), a wide detection range (up to 1356 %), a fast response time, and excellent cyclic stability for strain measurements. The temperature detection region, leveraging the thermoelectric effect, improves the Seebeck coefficient of the PEDOT: PSS coating from 20 to 122.86 μVK −1 through de-doping and energy band modulation. Moreover, the temperature sensing of the PEDOT: PSS coating features good cyclic stability, a rapid response time, and versatile testing capabilities. This innovative structural design effectively decouples strain and temperature signals across a broad strain range (0–600 %). These sensors hold potential applications in human health monitoring and as electronic skin for flexible robotics.
研究领域:
材料科学
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传感器工程
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生物医学工程
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柔性电子学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Shasha Zhu,Wei Zhang,Chunming Xu,Jie Huang,Cao Zou
Myocardial ischemia-reperfusion injury (MIRI) significantly contributes to the high incidence of complications and mortality associated with acute myocardial infarction. Recently, injectable electroconductive hydrogels (IECHs) have emerged as promising tools for replicating the mechanical, electroconductive, and physiological characteristics of cardiac tissue. Herein, we aimed to develop a novel IECH by incorporating irbesartan as a drug delivery system (DDS) for cardiac repair. Our approach involved merging a conductive poly-thiophene derivative (PEDOT: PSS) with an injectable dual-network adhesive hydrogel (DNAH) comprising a catechol-branched polyacrylamide network and a chitosan-hyaluronic acid covalent network. The resulting P-DNAH hydrogel, benefitting from a high conducting polymer content, a chemically crosslinked network, a robust dissipative matrix, and dynamic oxidation of catechol to quinone exhibited superior mechanical strength, desirable conductivity, and robust wet-adhesiveness. In vitro experiments with the P-DNAH hydrogel carrying irbesartan (P-DNAH-I) demonstrated excellent biocompatibility by cck-8 kit on H9C2 cells and a rapid initial release of irbesartan. Upon injection into the infarcted hearts of MIRI mouse models, the P-DNAH-I hydrogel effectively inhibited the inflammatory response and reduced the infarct size. In conclusion, our results suggest that the P-DNAH hydrogel, possessing suitable mechanical properties and electroconductivity, serves as an ideal IECH for DDS, delivering irbesartan to promote heart repair.
研究领域:
生物医学工程
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心脏病学
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材料科学
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药学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）