MEASUREMENT SCIENCE and TECHNOLOGY
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2010
·Vol. 21
·期 5
·055802
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IF 1.317
Hui Xu,Xiaoxi Yang,You Wang,Junbao Zheng,Zhiyuan Luo,Guang Li
A sensor based on the screen-printing technique for the rapid blood potassium test was developed. The sensor consists of a thick film potassium ion-selective electrode and a reference electrode. Poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(styrenesulfonate) (PSS) was screen-printed on carbon electrodes as an internal solid contact layer for both ion-selective and reference electrodes. PVC membranes with and without selective ionphore valinomycin were coated on the PEDOT/PSS layer to form potassium ion-selective and reference electrodes, respectively. The potentiometric response characters were evaluated. The response time of the sensor was 15 s when less than 15 µL of sample was applied. The sensitivity of the potassium sensor was around 60 mV per decade, while the potentiometric log selectivity coefficients were −3.43 and −3.48 for Na+ and Ca2+, respectively.
研究领域:
医学工程
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生物传感
·
材料科学
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DOI
高影响因子
Analytical Methods
·
2016
·Vol. 8
·期 41
·7516-7521
·
IF 1.915
Sheng Qiang Deng,Hong Yan Zou,Jing Lan,Cheng Zhi Huang
A novel method for sensitive melamine detection based on the aggregation-induced superior peroxidase-like activity of Cu2−xSe capped by sodium polystyrene sulfonate (PSS) (Cu2−xSe@PSS) nanoparticles has been developed. In the presence of melamine, Cu2−xSe@PSS nanoparticles aggregated and exhibited impressive peroxidase-like activity which can accelerate the oxidation of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to its blue product (oxidized TMB) with H2O2. The enhancement of the absorbance intensity of oxidized TMB at 650 nm showed a good linear relationship with the addition of melamine ranging from 4.7 nM to 29.7 μM. And the detection limit for melamine was as low as 1.2 nM, which was far below the safety limits of melamine ingestion (20 mM in the USA and EU; 8 mM in infant formula in China). Control experiments suggested that the enhancement in the peroxidase-like activity of aggregation for Cu2−xSe@PSS in comparison to its disperse nanoparticles resulted from the ˙OH or O2˙− radical generated.
研究领域:
分析化学
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食品安全
·
纳米生物学
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2015
·
IF 5.056
Jun Shi,Xiaojuan Wang,Shuhan Xu,Qiong Wu,Shaokui Cao
In this paper, hollow aliphatic poly(urethane-amine) (PUA)/sodium poly(styrene sulfonate) (PSS) multilayer microcapsules with smart nano-membranes were prepared for smart drug delivery. Thanks to the variation of the electrostatic interaction between aliphatic PUA and PSS, and the shrinkage of aliphatic PUA above its LCST, the hollow microcapsules displayed the distinguished pH- and thermal-dependent drug release properties. SEM results indicated that the microcapsule membranes had better thermal-responsiveness at pH 4.5 than that at pH 7.4. More importantly, the microcapsule membranes exhibited reversible thermal-tunable drug release property at pH 4.5 with significant response to temperature change for the sake of the regularly shrinkage of aliphatic PUA above its LCST. The results suggest that the prepared hollow microcapsules can be employed as the novel “smart” nano-membranes for the controllable drug delivery.
研究领域:
材料科学
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药物递送系统
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生物医学工程
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DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 8
·期 1
·1-14
·
IF 23.2
Long Bo,Zhang Qian,Zhang Lintong,Liu Qi,Xing Qiongqiong,Qu Fangfang,Deng Liying,Yan Peng,Wang Liwei,An Meng,Ye Dapeng,Yuan Zhanhui
Trace amounts of antibiotics in water can accumulate in the human body through the food chain, posing significant health risks. Therefore, there is an urgent need to develop simple and effective methods for detecting antibiotics in water. In this study, we prepared electrochemical aptamer sensors based on carbon nanotubes@polystyrene sulfonate-gold nanoparticles/reduced graphene oxide (CNT@PSS-AuNPs/rGO) layered thin films for real-time, on-site detection of ciprofloxacin (CIP) in aquaculture environments, utilizing a portable sensing detection device. The CNT@PSS-AuNPs/rGO layered film offers an excellent specific surface area, providing ample binding sites for the aptamer. The functionalized CNT@PSS-AuNPs enhance the dispersibility and conductivity of the substrate material and increase the surface area of the electrode when loaded with rGO. Under optimal experimental conditions, the developed sensor exhibits a dynamic range from 4 ng/mL to 1.0 × 10 3 ng/mL and a limit of detection of 4 ng/mL (S/N = 3), demonstrating satisfactory sensitivity. The sensor also shows good stability, with a relative standard deviation of less than 1% after 100 repeated measurements. Moreover, when combined with a portable detection platform, CIP levels in aqueous environments can be analyzed intelligently, rapidly, and timely. Our study aims to promote simple and effective detection strategies, potentially extending their practical applications.
研究领域:
环境科学
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生物医学工程
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材料科学
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DOI
高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 18
·10995-11013
·
IF 4.9
Wu You,Liu Junhui,Hu Zhengchuan,Zhou Weibo,Wu Wei,Wang Jieqiong,Ao Yuhui,Li Ming
Wearable strain sensors are gaining popularity in the field of intelligent electronic devices due to their compactness and mobility. In this study, we presented a wearable, pliable piezoresistive sensor derived from a wooden sponge integrated with the conductive polymer PEDOT. The conductive network of PEDOT: PSS underwent modulation through the incorporation of a cross-linking agent, namely, γ - glycidoxypropyltrimethoxysilane (GOPS), aimed at enhancing the sensor's sensitivity. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) confirmed that GOPS cross-linked with PEDOT: PSS. Crosslinking induced by GOPS helped PEDOT to form an ideal-network microstructure, thereby improving the sensitivity. Benefitting from this micro-network structure, the wood sponge/PEDOT:PSS/GOPS (WPG) exhibited a high sensitivity of 5.69 kPa −1 and a fast response time of 111 ms, with exceptional stability and durability (over 500 cycles), making it suitable for detecting subtle muscle changes. Crosslinking induced by GOPS induced PEDOT to form an ideal-network microstructure, thereby improving the sensitivity. The micro-network structure presented a novel approach for designing piezoresistive sensors.
研究领域:
材料科学
·
电子工程
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Wenchao Liu,Leipeng Zhang,Dongqi Liu,Rui Yang,Zetuo Lv,Yike Zhang,Lei Xu,Qiumei Jiang,Yuqiang Wang,Jiupeng Zhao,Yao Li
Poly(3,4-ethylenedioxythiophene) (PEDOT) based infrared electrochromic devices (IR-ECDs) show great potential for dynamic thermal management applications. However, their practical deployment is limited by a slow response, poor cycling stability, and scalable fabrication challenges. In this study, we report a scalable, solution-processed strategy for fabricating large-area, flexible PEDOT/PSS IR-ECDs using a one-step solvent post-treatment to selectively remove insulating PSS. This treatment markedly enhances film conductivity, which, in turn, accelerates charge transport and facilitates robust electrochromic switching. The resulting devices demonstrate rapid switching behavior, excellent cycling stability, and a notable mid-infrared emissivity modulation (Δε8–14 μm) of 0.23. Theoretical and experimental results reveal that IR modulation of PEDOT/PSS arises primarily from conductivity changes driven by reversible ion doping/dedoping. When the conductivity exceeds ∼500 S/cm, its long-wave IR reflectance closely follows predictions from Drude theory. This study not only offers new insights into the IR electrochromic mechanism of PEDOT/PSS but also opens up opportunities for scalable, cost-effective, and high-performance thermal modulation technologies with potential applications in adaptive concealment, information display, and intelligent thermal regulation.
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Ziwen Sun,Quan Yuan,Liwei Yan,Junyu Lu,Weiyi Ding,Yang Chen,Huawei Zou
Traditional high-density thermal protection systems (TPSs) limit the maneuverability of hypersonic vehicles while lacking stealth capabilities. In this work, we propose a strategy to integrate electromagnetic wave absorption and thermal protection in an aerogel composite by introducing a PEDOT:PSS heterointerface via ethanol-assisted gel impregnation. Ethanol also functions as secondary doping, enabling tuning of the electromagnetic parameters of the aerogel by adjusting the doping level. This can achieve a balance between microwave attenuation and impedance matching in the aerogel, leading to excellent broadband microwave absorption with a minimum reflection loss of −37 dB at 30 mm thickness and an effective bandwidth of 13.3 GHz. During ablation, the PEDOT:PSS heterointerface can also induce a thermal blocking effect that can suppress the melting of high-silica fiber, helping maintain the three-dimensional skeletal support of fiber felt, thereby enhancing the aerogel composite’s resistance to oxyacetylene flame attack. Therefore, the aerogel composite exhibits a low linear ablation rate of 0.03 mm/s under 1 MW/m2 and, after 96 s of exposure to 1800 °C flame, maintains a backside temperature of only 61 °C. This work provides a feasible strategy for achieving integrated electromagnetic wave absorption and thermal protection in aerogel composites, which has potential for next-generation lightweight TPS applications.
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PubMed
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
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2025
·
IF 4.9
Yang Song,Ronghui Dan,Lei Li,Xiaojuan Xia,Jiang Zhao,Rongqing Xu
The potential of ubiquitous humidity monitoring is unlocked through the presentation of a novel, highly flexible sensor, which is fabricated using a dramatically simplified and cost-effective method, challenging existing complex manufacturing approaches. Specifically, this study utilizes a laser direct writing technique that is both efficient and rapid for the fabrication of flexible laser-induced graphene (LIG) interdigitated electrodes (IDEs). By skillfully integrating graphene oxide (GO) and poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT: PSS), a flexible GO/PEDOT: PSS@LIG humidity sensor has been successfully developed. This sensor cleverly harnesses the distinctive properties of both PEDOT: PSS and GO, giving rise to a noteworthy synergistic effect that greatly boosts the humidity sensing capabilities of the GO/PEDOT: PSS composite. The sensor demonstrates a capacitive sensitivity of 1493561.67 μF/% RH spanning from 11 % to 97 % RH. Furthermore, it exhibits exceptional response and recovery times (5 and 16.5 s, respectively), along with commendable stability. These features guarantee efficient and precise real-time monitoring. Such remarkable sensing attributes position the flexible GO/PEDOT: PSS@LIG humidity sensor as a highly promising candidate for deployment in non-contact sensing domains, including environmental and respiratory monitoring.
研究领域:
材料科学
·
传感器技术
·
环境监测
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DOI
高影响因子
Advanced Materials Technologies
·
2022
·Vol. 7
·期 10
·2200103
·
IF 8.856
Ying Fang,Na Qiao,Heli Deng,Meng Ren,Yufan Zhang,Desuo Zhang,Hong Lin,Yuyue Chen,Ken Tye Yong,Jiaqing Xiong
Transdermal drug delivery system (TDDS) is effective in alleviating patient's pain and reduces frequent administration. Realizing tunable drug release on fibers/fabrics is important for constructing TDDS platform with good skin affinity and long-term comfortability. Herein, a conductive fiber consisting of polyvinyl pyrrolidone/sodium alginate/ acetaminophen/poly(3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) (PVP/SA/AAP/PEDOT: PSS, PSAP) is fabricated by core-shell microfluidic spinning technology for the controllable release of AAP, a typical pain reliever. Incorporation of conductive fillers endows fibers with microcracks that are responsive to electrical stimulation for promoting drug diffusion and release. The release rate of AAP in simulated body fluid can be improved from 70.81% to 92.07% under electric stimulation, demonstrating a regulable release process enabled by tunable fiber conductivity and applied voltage (0–1.5 V). The drug release kinetic model reveals Fickian diffusion dominates the release process of AAP that generates local concentration difference in the microcracked PSAP fiber with electrical stimulation. This work proposes an accurate fabrication strategy of fibers-based TDDS that is promising for wearable biomedical electronics and self-powered on-demand drug delivery systems.
研究领域:
生物医学工程
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材料科学
·
药学
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2012
·
IF 3.898
You Wang,Hui Xu,Xiaoxi Yang,Zhiyuan Luo,Jianming Zhang,Guang Li
An all-solid-state sensor based on screen-printing technique for rapid blood calcium test was studied. The sensor consists of a thick film calcium ion-selective electrode and a pseudo-reference electrode. Poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(styrenesulfonate) (PSS) was screen-printed on carbon paste electrodes as internal solid contacts for both the ion-selective and reference electrodes. PVC membranes with and without neutral carrier ETH129 were coated on the PEDOT (PSS) layer to form calcium ion-selective and pseudo-reference electrodes, respectively. The properties of screen-printed PEDOT (PSS) film on carbon paste electrode were studied by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) methods. The response time of the calcium sensors was 15 s while less than 15 μL sample was applied. And the sensitivity was 30.0 ± 1.0 mV per decade, while the potentiometric log selectivity coefficients were −3.80, −3.35 and −4.60 for Na + , K + and Mg 2+ . Other properties of the calcium sensors were evaluated, including the temperature effect, repeatability, reproducibility and stability. The testing results with the calcium sensors were compared with those with a routine hospital electrolyte analyzer. The clinical trial results reveal that the all-solid-state calcium sensor is promising for the point of care testing.
研究领域:
医学检测
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生物传感
·
材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xingyu Zhang,Lin Chen,Longjie Jiang,Liang Zhu,Chuqing Cao,Wei Zhang,Linting Zhao,Jiaqi Xu,Han Liu
In the advent of the new energy era, the global demand for lithium is increasing rapidly. The recovery of Li + and Co 2+ from the leachate of high-quality spent lithium-ion batteries (LIBs) offers significant economic and environmental benefits. This study proposes a TFC-ON-MOF membrane prepared through a combination of in situ growth and interfacial polymerization (IP) for the recovery of Co 2+ and Li + from battery leachate. Operated in an electrodialysis (ED) system, the experimental results demonstrated that the optimum Li + membrane flux was observed to reach 1.02 μmol cm −2 min −1 at 7.5 mA cm −2 , with the selectivity remaining at 19.84, which exemplifies well-separation and permeation performance. Following several operational cycles, the separation performance remained stable, and the membrane exhibited enhanced fouling resistance relative to commercial monovalent selective cation exchange membranes (CSO). The composite membrane features sub-nanometer windows and nanometer-sized cavities, enabling selective permeation of Li + while simultaneously sequestering Co 2+ . The inclusion of auxiliary permeation groups (PSS) also enhances overall permeation performance and selectivity. The findings contribute to the design of composite metal–organic frameworks and provide a novel approach for the selective separation of heavy metal ions from spent lithium batteries, thereby promoting the efficient recycling of valuable metal resources.
研究领域:
材料科学
·
环境科学
·
化学工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Li Wang,Hengmei Yang,Zhongyou Lu,Lingchao Li,Yujing Zhang,Kun Xu,Yunqing Tang
This work reports a high-performance vertical organic electrochemical transistor (vOECT) for ultrasensitive sweat glucose monitoring via synergistic molecular and device engineering. The sensor integrates a hydrogen-bonded PEDOT:PSS-PVA channel, enabling record-high transconductance g m (102.5 mS) through enhanced phase separation and charge mobility, and a catalytic gate electrode with Prussian blue/chitosan/graphene/glucose oxidase multilayers for enzymatic signal amplification. It exhibits unprecedented sensitivity of 6.45 mA/dec in artificial sweat (over 5-fold higher than prior OECT-based glucose sensors), robust flexibility with >95% current retention at 1.5-cm bending radius, and a wide detection range (1 μM–5 mM) covering physiological sweat glucose levels with 95.5% accuracy in human trials. Validated in a wearable patch with wireless data transmission, this platform shows significant potential for non-invasive diabetes management, establishing a versatile material-device co-design strategy for multiplexed biomarker detection in personalized healthcare.
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高影响因子
危险品化学品经营许可证（带存储）