CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Hao Jiang,Wenhao Wang,Xinyi Wang,Yuchen Xu,Tao Zhu,Siyan Shang,Chaojie Zhou,Xinhua Zhou,Wenbin Zhang,Yuhua Cheng,Longchun Wang,Shaomin Zhang,Gaofeng Wang,Jingquan Liu,Minghao Wang
A PEDOT-MOF/polypeptide modified multi-modal micro-ECoG electrode is proposed. • PEDOT-MOF achieves dual functions of ROS sensing and efficient scavenging. • Polypeptide/DEX enhances electrode biocompatibility and reduces inflammation. • In vivo validation of multi-modal ECoG/ROS recording and immunomodulation The limited biocompatibility of conventional flexible electrode materials often triggers host immune responses, manifesting as glial encapsulation and the overproduction of reactive oxygen species (ROS). Meanwhile, ROS accumulation further exacerbates local inflammation and induces irreversible cellular damage. Therefore, constructing a highly biocompatible electrode-tissue interface and developing multi-modal microelectrodes capable of recording and regulating in-vivo ROS concentrations are critical for alleviating immune responses and clarifying the underlying mechanisms of electrode failure. In this work, we proposed a novel modification strategy for micro-electrocorticography (micro-ECoG) electrodes to enable multi-modal neural recordings (ECoG and ROS) and regulations (drug deliver and ROS catalyze). For this purpose, the electrode surface is modified with Cu-metal-organic framework (Cu-MOF)-doped poly(3,4-ethylenedioxythiophene): polystyrenesulfonate (PEDOT:PSS), denoted as PEDOT-MOF. Additionally, a highly biocompatible polypeptide coating loaded with anti-inflammatory drugs is introduced to further suppress immune reactions. In vitro experiments reveal that PEDOT-MOF exhibits excellent electrochemical performance and detection sensitivity to H₂O₂, indicating its multifunctionality to catalyze the ROS for mitigating oxidative stress and monitor dynamic changes in ROS concentration in real time. In vivo implantation studies confirm that microelectrodes modified with the drug-loaded polypeptide coating exhibit lower interface impedance and higher SNR. Collectively, these results highlight the significant application potential of PEDOT-MOF-modified micro-ECoG electrodes combined with a drug-loaded polypeptide coating, which may address key challenges in current implantable neural electrode technology. It should be noted that, due to partial channel attenuation over chronic implantation and spatial diffusion effects of dexamethasone, this platform is more suited for monitoring relative ROS dynamic trends. Future optimizations will further advance the capability toward accurate in-vivo ROS absolute quantification.
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MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Guoliang Zhang,Yaolong Zhang,Yu Zhang,Changshun Wang,Jin Tan,Ruxangul Jamal,Tursun Abdiryim,Ahmat Ali
Hydroxyl-functionalized MWCNs and PEDOT are better suited for loading MIP. • The sensor detects pefloxacin at the picomolar level. • Synthesis of ultra-thin tubular PEDOT-OH@Au/MWCNs-OH nanocomposites. • The excellent thin-layered structure offers an efficient electron transport pathway. To safeguard public health and prevent the increase of bacterial resistance, the creation of practical and accurate detection methods for the quantitative analysis of fluoroquinolone antibiotics is essential. In this study, a tubular PEDOT-OH@Au/MWCNTs-OH substrate material was prepared using a one-step in situ oxidation method, with chloroauric acid as the oxidant. Pyrrole (Py) was used as the functional monomer, and pefloxacin (PFX) as the template molecule, to ingeniously design a molecularly imprinted electrochemical sensor (MIP/PEDOT-OH@Au/MWCNT-OH) with sensitive sensing capabilities. As expected, the unique structure and properties of PEDOT-OH@Au/MWCNTs-OH provided the sensor more surface area and enhanced electrochemical activity, increasing the number of distinct recognition sites. Based on experimental results, the MIP/PEDOT-OH@Au/MWCNT-OH sensor showed good anti-interference and stability, a low detection limit of 0.149 nM, S/N = 3, and a broad linear range of 0.002–30 μM. Additionally, the sensor achieved a recovery rate of 97%–103% in detecting PFX in pefloxacin mesylate ointment. This sensor shows promise as a highly selective and sensitive portable detection method for the quantitative analysis of PFX in the environmental monitoring. Download: Download high-res image (239KB) Download: Download full-size image
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Small Methods
·
2026
·
IF 8.7
Wanjie Yin,Mengyuan Wei,Qing-Song Jiang,Xiao Yu,Jiawen Tian,Jincheng Xu,Zhihui Wang,Ligang Yuan,Xiao Yang,Tiankai Zhang
Poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT: PSS) is a widely used hole transport material in tin-lead perovskite solar cells, yet its photoelectric properties require further enhancement. Herein, we develop a rational gradient doping strategy using DL-carnitine hydrochloride (DL-ChCl) to regulate PEDOT: PSS and improve its buried interface with the tin-lead perovskite. The DL-ChCl induces high p-type doping in PEDOT: PSS, resulting in enhanced conductivity and an elevated work function for improved hole extraction via favorable energy level alignment. Simultaneously, the crystallization quality of the tin-lead perovskite is also enhanced by hindering Sn 2+ oxidation, passivating interfacial defects, and preventing the formation of lead iodide. As a result, a champion power conversion efficiency of the inverted tin-lead perovskite solar cell is enhanced from 18.56% to 21.23% with the open-circuit voltage as high as 0.865 V. The stability of the optimized device without encapsulation is also improved, sustaining 90% of its initial efficiency after aging in a nitrogen atmosphere for 1200 h. This work provides an effective gradient doping strategy to engineer the buried interface between PEDOT: PSS and tin-lead perovskite, improving the photovoltaic performance of tin-lead perovskite solar cells.
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ADVANCED MATERIALS
·
2026
·
IF 29.1
Jianhong Xu,Wenxiao Zhang,Haobo Yuan,Ting Shu,Yunjie Mao,Jun Liu,Qiang Weng,Tengyi You,Yunfei Li,Bo Feng,Xuemin Guo,Zhengbo Cui,Wen Li,Sheng Fu,Xiaodong Li,Xiaohong Chen,Junfeng Fang
In all-perovskite tandem solar cells (TSCs), thick (>1 µm) Sn-Pb rear sub-cells suffer from hole accumulation-driven Sn 2+ photo-oxidation due to unbalanced charge transport. Traditional sacrificial reductive additives fail to address this photo-stability challenge. Herein, we employ a low-temperature solution-processed solid-state polymerization (SSP) method using 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT) to in situ construct poly(3,4-ethylenedioxythiophene) (PEDOT) hole transport channels within the perovskite film. This approach enhances hole extraction, therefore balancing electron-hole transport in Sn-Pb rear sub-cells as well as recombination between two sub-cells. Consequently, we achieve a 24.20% power conversion efficiency (PCE) for single-junction Sn-Pb devices and a 29.58% PCE for all-perovskite TSCs. Significantly, by suppressing Sn 2+ photo-oxidation through mitigated hole accumulation, the tandem device retains 90% of its initial efficiency after 1100 h of continuous operation at 55°C under maximum power point (MPP) conditions. This strategy offers a promising route toward the development of highly efficient and stable all-perovskite tandem photovoltaics.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 40
·18803-18810
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IF 3.3
Yanmei Liang,Danqin Li,Yao He,Shixing Chao,Mingming Zhang,Xueqian Zhao,Weiqiang Zhou,Jingkun Xu,Baoyang Lu
The development of asymmetric supercapacitors (ASCs) with high power and energy density is greatly restricted by the low capacitance of the anode materials. V2O5 is a promising anode material with high theoretical capacity, but its low conductivity and high dissolution are not conducive to applications in energy storage. Herein, oxygen-vacancy PEDOT/V2O5 ultrathin nanosheets with a thickness of about 4.4 nm are fabricated by the oxidative polymerization of EDOT monomers on V2O5 nanosheets in the absence of other oxidants. The results of XPS and EPR confirm that the polymerization of PEDOT increases the oxygen vacancy concentration of V2O5. The PEDOT/V2O5 nanosheets exhibit a specific capacitance of 406 F g−1 at 2 mV s−1 and excellent cyclic stability in the mixed organic electrolyte of dimethyl carbonate and ethylene carbonate. The energy density of ASCs composed of PEDOT/V2O5 as the anode and activated carbon as the cathode reaches 65 W h kg−1 at a power density of 1490 W kg−1. This means that PEDOT/V2O5 has enormous potential in high-energy storage.
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APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Fang Wang,Xianhong Zhang,Yuhong Ma,Wantai Yang
The hybrid composite of poly(3,4-ethylenedioxythiophene) (PEDOT) and halloysite nanotubes (HNTs) was synthesized by a two-step process. First, poly(sodium styrene sulfonate) (PSSNa) was grafted onto HNTs via surface initiated atom transfer radical polymerization. Then with the HNTs- g -PSS as a template and the grafted PSS chains as the counterion dopant, PEDOT was precipitated onto the template via in situ oxidization polymerization of EDOT to form HNTs@PEDOT hybrid composites. The conductivity of HNTs@PEDOT can reach up to 9.35 S/cm with the content of 40% HNTs- g -PSS, which increased almost 78 times than that of pure PEDOT (about 0.12 S/cm) prepared at the similar condition. Further treated with p -toluenesulfonic acid (TsOH) as external dopant, the conductivity of HNTs@PEDOT increased to 24.3 S/cm. The electrochemical properties of the composites were investigated with cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy with three-electrode cell configuration. The results showed that the capacitance of HNTs@PEDOT composite increased 55% than that of pure PEDOT.
研究领域:
材料科学
·
电化学
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Hao Chen,Jingdong Guo,Shandong Tan,Xueqi Zhang,Zhiyuan Sang,De'an Yang
MnO 2 has outstanding potential for application in cathode materials of zinc ion batteries (ZIBs). However, the poor electrical conductivity , poor ion diffusion kinetics, and structural instability greatly limit its rate performance, specific capacity, and cycling stability. Herein, we prepared PEDOT-coated MnO 2 cathode material with oxygen vacancy defects, namely Vö-MnO 2 @PEDOT, by Dual-modification of MnO 2 nanowires. The PEDOT coating optimizes the electron transfer capability of the material while inhibiting the dissolution of MnO 2 . The oxygen vacancies accelerate ion diffusion. Vö-MnO 2 @PEDOT possesses a joint energy storage mechanism, containing the insertion/extraction of H + /Zn 2+ and dissolution/precipitation of MnO 2 . This joint energy storage mechanism explains the high specific capacity and the increase in capacity. The Vö-MnO 2 @PEDOT displays a high specific capacity of 400 mAh/g at 0.2 A/g. Besides, at 2 A/g, Vö-MnO 2 @PEDOT outputs a high capacity of 213 mAh/g after 2000 cycles. This research provides a feasible research idea for the performance optimization of manganese oxide cathode materials.
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2023
·
IF 4.3
He Zhen-Hang,Liu Guang-Feng,Zhou Ze-Kun,Liu Zhen,Zeng Yi-Shu,Zhang Peng
Poly(3,4-ethylenedioxythiophene) (PEDOT) is one of the most successful conductive polymers that recently has been used in wearable sensors for human health monitoring. In this work, we prepared a series of PEDOT hybrids consisting of PEDOT, sodium poly(styrene sulfonate) (PSSNa) and polyethylene oxide (PEO), and their preparation could be scaled-up via an adapted solid-state polymerization process. The resistance of the as-prepared PEDOT:PSS/PEO hybrid shows clear temperature response, i.e. , it decreases almost linearly with the temperature increase. To understand this phenomenon, the in situ synchrotron radiation wide- and small-angle X-ray scattering (WAXS/SAXS) characterizations were undertaken to study the temperature-dependent microstructure change of the PEDOT:PSS/PEO hybrid. It demonstrated that PEDOT formed conductive paths in the hybrids, which were not destroyed by the PEO crystallization. As temperature increased, the PEO crystals’ melting and the accompanying reorganization of PEDOT chains endowed the hybrid sample temperature responsiveness. Based on these fundamental knowledges, the hybrid materials were used to fabricate flexible wearable sensor that showing temperature sensing performance with an accuracy of 1 °C. These findings shed lights on the scalable manufacturing of wearable sensors for body temperature monitoring.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Dufen Hu,Baoyang Lu,Kaixin Zhang,Xiaoxia Sun,Jingkun Xu,Xuemin Duan,Liqi Dong,Hui Sun,Xiaofei Zhu,Shijie Zhen
Two amino-functionalized chiral poly(3,4-ethylenedioxythiophene) (PEDOT) derivatives, poly( N -( tert -butoxycarbonyl)-L-phenylalayl (3,4-ethylenedioxythiophene-2'-yl)methylamide) (PEDOT-Boc-Phe) and poly(L-phenylalayl (3,4-ethylenedioxythiophene-2'-yl)methylamide) (PEDOT-Phe), were synthesized electrochemically via potentiostatic polymerization of corresponding monomers N -( tert -butoxycarbonyl)-L-phenylalayl (3,4-ethylenedioxythiophene-2'-yl)methylamide (EDOT-Boc-Phe) and L-phenylalayl (3,4-ethylenedioxythiophene-2'-yl)methylamide (EDOT-Phe). The electrochemical behavior, structural characterization, spectroscopic properties, and surface morphology of two chiral conducting polymer films were systematically explored. They displayed excellent reversible redox activities, and rough and compact surface. Importantly, PEDOT-Boc-Phe and PEDOT-Phe modified electrodes were used to identify 3,4-dihydroxyphenylalanine (DOPA) enantiomers by square wave voltammetry (SWV) in sulphuric acid solution. It is interesting that the SWV peak currents of enantiomers were found to be quite different and hence the enantiomers could be successfully recognized but the enantioselectivity was not observed using the common method of cyclic voltammetry (CV). Satisfactory results implied that the obtained polymer films could play crucial roles in the development of practical value and analytical application prospects.
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Materials Today Chemistry
·
2023
·
IF 7.3
H. Wang,X. He,X. Huang,P. Su,T. Xia,W. Liu,Y. Ye
Poly(3,4-ethylenedioxythiophene) (PEDOT) coating is advantageous in constructing flexible sensors, due to its good flexibility, high conductivity, and excellent physical and chemical stability. Traditional solution-based coating methods, however, are difficult to retain the micro- and nanostructures of the substrates, thus decreasing the sensitivity of the resulted sensors. In this work, we prepared superhydrophobic (SHB) strain sensors using a piezoresistive composite made from consecutive vapor deposition of conformal polymer coatings , i.e. PEDOT and poly(perfluorodecyl acrylate- co -ethylene glycol diacrylate) on fabrics using oxidative and initiated chemical vapor deposition methods. Compared with the pristine fabric sample, the composite materials displayed significantly improved initial currents, which are attributed to more conductive paths created by PEDOT coating. The resulted strain sensor displayed great flexibility, large sensitivity, wide sensing range, and excellent reliability. Furthermore, the sensor has been successfully employed to monitor various human motions in real time. The hydrophobic outer layer endows the sensor self-cleaning and durability capacities, indicating possible applications under harsh environment.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xin Li,Zhenhang He,Zhen Liu,Yu Chen,Zekun Zhou,Guixiang Chen,Weiheng Qi,Daniel Rauber,Christopher W. M. Kay,Peng Zhang
In this work, post-treatment-free polymer hybrids, consisting of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and ionic liquids (ILs), were fabricated for the thermoelectric (TE) application. By optimizing the ILs’ molar concentration (0–0.5 M) and chemical composition, that is varying the cyano-based anions coupled with 1-ethyl-3-methylimidazolium cations, a high TE performance (power factor of 190 μW m −1 K −2 ) was achieved. The excellent TE performance was attributed to the conductive network under the coupling effect of molecular structure (such as oxidation level, conformation and crystallization of PEDOT chains) and microstructure (long-range ordered conductive paths). Especially, the long-range conductive paths were proved to be made of rod-like microdomains, based on detailed structure analysis with micro-Fourier transform infrared spectroscopy and small-angle X-ray scattering. These paths enabled carrier transport among microdomains of PEDOT:PSS/IL hybrids. Moreover, the conductive network of PEDOT:PSS/IL hybrids showed good environmental and mechanical stability, enabling the fabrication of flexible TE generators.
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MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 9
·1-9
·
IF 6.408
Shang Shuqi,Wang Dongwei,Wang Jiasheng
A dual-mode electrochemical biosensor for acetamiprid detection was proposed for the first time based on carbon quantum dots/Prussian blue (CQDs/PB)-functionalized poly(3,4-ethylenedioxythiphene) (PEDOT) nanocomposite. The nanocomposite with spherical stacking nanostructure showed high surface area, excellent catalytic ability, and cycling stability. The biosensor can be effortlessly constructed after the immobilization of acetamiprid aptamer. The concentration of acetamiprid can be determined by differential pulse voltammetry (DPV) based on its signal change deduced from the pristine PB. With the capture of acetamiprid, the response current (I-T) signal generated by hydrogen peroxide catalysis from the biosensor can also been used to establish the method for monitoring acetamiprid. The dual-mode biosensor showed a wide linear range from 10 −12 g mL −1 to 10 −6 g mL −1 , low detection limits of 6.84 × 10 −13 g mL −1 and 4.99 × 10 −13 g mL −1 , and ultrafast detection time of 25 s and 5 s through DPV and I-T mode, respectively. The biosensor possessed excellent selectivity and stability. More importantly, the biosensor was successfully applied to detect acetamiprid residues in vegetables, proving a promising approach for routine detection of pesticide in real samples. Graphical abstract The biosensor based on PEDOT/CQDs/PB for acetamiprid can be effortlessly constructed through both the increase of differential pulse voltammetry (DPV) signal change deduced by the pristine PB and the decrease of the response current (I-T) signal of the reduction of hydrogen peroxide catalyzed by PEDOT/CQDs/PB.
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