COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Dongyu Si,Haoxin Shao,Shuo Zhang,Yongkun Hao,Zhiyan Yan
A multi-cross-linked conductive hydrogel (ANHP) with HEC/PEDOT:PSS enhancement is designed for underwater motion sensing. • The ANHP hydrogel exhibits ultra-low equilibrium swelling ratio, outstanding tensile properties and high toughness. • The ANHP hydrogel sensor has high sensitivity, wide strain response range, fast response time and excellent cyclic stability. • The ANHP hydrogel detects multi-joint motions in air and underwater, and provides emergency signal sending via Morse code. Flexible conductive hydrogels, as core candidate materials for next-generation wearable sensors and underwater detection devices, show great potential for applications in Marine engineering, biomedical monitoring, and other fields. However, traditional conductive hydrogels tend to excessive swelling in the water environment due to abundant hydrophilic groups in their network structure, resulting in mechanical degradation and distortion of sensing signals, which seriously restricts their practical application in underwater scenarios. In this study, acrylamide (AM) and N-hydroxymethylacrylamide (NMA) were used as copolymerization monomers, hydroxyethyl cellulose (HEC) as the core biobased skeleton and multifunctional regulatory medium, and PEDOT:PSS as the high-conductivity functional filler to successfully construct a hydrogel (ANHP) with a multiple cross-linked structure. The test results show that the prepared hydrogel exhibits an extremely low equilibrium swelling ratio (3%), excellent tensile properties (0.614 MPa, 1343.81%), high sensitivity (GF = 3.35), a wide strain response range (0–400%), a fast response time (0.25 s), and outstanding cyclic stability over 500 cycles. The hydrogel-based sensor can stably detect human motions underwater and realize underwater Morse code communication. This study provides an innovative strategy for the development of high-performance underwater flexible sensors and an important reference for the high-performance and multifunctional application of carbohydrate-based functional materials. Download: Download high-res image (205KB) Download: Download full-size image Synthetic route and structural diagram of ANHP hydrogel.
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DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yifeng Chen,Yiduo Chen,Wenzhong Cao,Jing Wang,Peng Zhang,Jian Ji
Implantable cardiovascular devices have revolutionized the treatment of cardiovascular diseases, yet their long-term functionality without causing thrombosis is a persistent challenge. Although the surface modification of anticoagulant coating has greatly improved the biocompatibility of the devices, its long-term stability in complex physiological environments still remains questionable. Herein, the stability of three anticoagulant hydrogel coatings, poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC), poly(sodium 2-acryloyl-2-methylpropanesulfonate) (PAMPS), and poly(4-styrenesulfonate sodium) (PSS), is studied. The fabrication of these coatings onto device surfaces is validated by using X-ray photoelectron spectroscopy (XPS) and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. In vitro anticoagulation assays confirm the coatings’ significant anticoagulant effects. Among all three coatings, the PSS coating demonstrated superior chemical and mechanical stability in the comprehensive tests, showing great potential for improving the long-term anticoagulant performance of implantable cardiovascular devices.
研究领域:
生物医学工程
·
材料科学
·
心血管医学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zheyu Tian,Qing Chang,Zhenghong Liu,Chaorui Xue,Ning Li,Suping Jia,Xiangqian Fan,Jinlong Yang,Shengliang Hu
In this study, the electric energy harvesting capability of the hierarchical pore gradient silica aerogel (HPSA) is demonstrated due to its unique porous structure and inherent hydroxyl groups on the surface. Taking advantage of the positively charged surface of unwashed HPSA credited by the preparation strategy, poly(4-styrene sulfonic acid) (PSS) can be spontaneously adsorbed onto unwashed HPSA and shows gradient distribution due to the pore-gradient structure of HPSA. By virtue of the gradient distribution and the stronger ionization of PSS, PSS-modified HPSA (PSS–HPSA) shows enhanced electricity generation performance from natural water evaporation with an average output voltage of 0.77 V on an individual device. The water evaporation-induced electricity property of PSS–HPSA can be maintained in the presence of a low concentration of salt. The desirable salt resistance capability benefits from the unique 3D hierarchical porous structure of HPSA which ensures rapid water replenishment so as to effectively avoid the salt accumulation. The HPSA-based devices with the advantages of unique porous structure, easy functionalization, good physicochemical stability, good salt resistance capability, and eco-friendliness show great potential as water evaporation-induced electricity generators.
研究领域:
材料科学
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能源技术
·
环境科学
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DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Qiao Fan,Kai Zhang,Yufei Liu,Chong Chen,Lanlan Wei,Yucheng Yin,Tingting Luo,Shigui Peng,Min He,Jie Yu
This work demonstrates a molecular engineering strategy to optimize the capacitive performance of PEDOT:PSS by precisely controlling the structure of the amphiphilic block copolymer PSS-b-PAPEG (poly(styrenesulfonate)-block-poly(allyloxy polyethylene glycol)). Five copolymers with PSS:PAPEG ratios of 2:1, 1.5:1, 1:1, 1:1.5, and 1:2 were synthesized via controlled polymerization and integrated into a PEDOT (poly(3,4-ethylenedioxythiophene)) matrix. Electrochemical testing revealed that the 1:1 ratio composite exhibited a maximum specific capacitance of 32.1 F/g at 1 A/g, attributed to the synergistic effects of microphase-separated dual continuous networks and porous structures. Multiscale characterization (XPS, SEM, TEM, AFM, BET, and contact angle measurements) revealed that the 1:1 ratio forms optimal conductive pathways, interfacial doping, and ionic diffusion channels. This study establishes that block ratio engineering is an effective method for balancing conductivity and ionic pathways in conductive polymer-based supercapacitor electrode materials, providing a theoretical basis for high-performance energy storage materials.
研究领域:
材料科学
·
高分子化学
·
电化学
·
能源存储
·
纳米结构材料
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功能高分子
·
界面工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 53
·期 7
·5204-5215
·
IF 2.599
Teng Xiangguo,Yu Cong,Wu Xiufen,Dong Yichao,Gao Peng,Hu Huili,Zhu Yongming,Dai Jicui
How to solve the crossover of vanadium ions through ion exchange membrane is a key issue in vanadium redox flow battery (VRB), especially for ultra-thin membranes used for VRB to obtain a lower cell resistance. Herein, an ultra-thin (~ 30 μm) PTFE/SPEEK [polytetrafluoroethylene/sulfonated poly(ether ether ketone), P/S] membrane is successfully prepared and modified by using layer-by-layer (LBL) self-assembly technique with polycation poly(diallyldimethylammonium chloride) (PDDA) and polyanion poly(sodium styrene sulfonate) (PSS). P/S membranes are alternatively immersed in positively and negatively charged polyelectrolyte to form 2 to 8 bilayers onto its surface. Consequently, a series of P/S-[PDDA/PSS]
n
( n is the number of multilayers) membranes are fabricated. Both the physicochemical properties and VRB performances of the P/S-[PDDA/PSS]
n
membranes are then investigated in detail. Results show that the ion selectivity of the P/S-[PDDA/PSS]
n
membranes is much higher than that of pristine P/S membrane, especially for P/S-[PDDA/PSS] 6 membrane. As a result, the VRB with the P/S-[PDDA/PSS] 6 membrane exhibits the highest coulombic efficiency (CE) of 96.5% at 80 mA cm −2 , the highest voltage efficiency of 94.7% at 40 mA cm −2 and the highest energy efficiency of 87.7% at both 40 and 50 mA cm −2 , respectively. In addition, 80 times charge–discharge test proves that the P/S-[PDDA/PSS] 6 membrane possesses high stability and no obvious CE decay after running. All the results show that the LBL technique is an effective way to prepare ultra-thin membrane with high ion selectivity for VRB application.
研究领域:
电化学
·
能源材料
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膜科学
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储能技术
·
高分子材料
·
电化学工程
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DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Ye Zhang,Cunbin Zhu,Yongli Chen,Lu Wang,Xilong Huang,Linghong Zeng,Wenyan Lv
In this work, Ti 3 C 2 –Cl is introduced into poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonic acid) / single-walled carbon nanotubes (PEDOT: PSS/SWCNT, noted as PPSC) films to prepare ternary thermoelectric films of PEDOT: PSS/SWCNT/Ti 3 C 2 –Cl (PPSCT). The microscopic morphology, structures, and thermoelectric properties of PPSC and PPSCT films show that the introduction of Ti 3 C 2 –Cl results in a tendency of decreasing electrical as well as thermal conductivity , and the Seebeck coefficient is increased. When the content of Ti 3 C 2 –Cl reaches 8 wt%, the conductivity, Seebeck coefficient, and thermal conductivity of the PPSCT films reach the optimum values of 1683 S/cm, 21.69 μV/K, and 14.97 W/mK, respectively, and the power factor (PF) and thermoelectric figure of merit (ZT) are 79.23 μW/mK 2 and 1.58 × 10 –3 . The UPS and Hall effect results reveal that the improvement of the Seebeck effect of PPSCT mainly results from the ternary interfacial energy barrier as well as the change of carrier concentration. In addition, the wearable electronics devices demonstrate an output voltage of 4.5 mV and an output power of 54.36 nW under a 50 K temperature difference. The device displays a good monitoring sensitivity by reaching an output voltage of 0.6 mV at a 7 K temperature difference between the skin and the environment.
研究领域:
材料科学
·
电子工程
·
可穿戴设备
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DOI
高影响因子
SOLAR ENERGY
·
2018
·
IF 4.374
Abdelaal S.A. Ahmed,Wanchun Xiang,Xiaowei Hu,Chen Qi,Ibrahim Saana Amiinu,Xiujian Zhao
Si 3 N 4 /MoS 2 nanocomposite has been fabricated through a solvothermal process and Mixed with polystyrenesulfonate-doped poly (3, 4-ethylenedioxythiophene) to prepare (Si 3 N 4 /MoS 2 -PEDOT: PSS) as a counter electrode (CE) for bifacial dye-sensitized solar cells (DSSCs). The electrochemical studies confirm that Si 3 N 4 /MoS 2 -PEDOT: PSS CEs exhibits higher catalytic activity compared with pristine Si 3 N 4 /MoS 2 and PEDOT: PSS. The DSSCs with 5% Si 3 N 4 /MoS 2 -PEDOT: PSS composite CE achieves conversion efficiency (PCE) of 7.16%, which is comparable to that of the conventional platinum CE (7.50%) and better than those of the pristine Si 3 N 4 /MoS 2 (3.80%) or PEDOT: PSS (4.20%) CEs. Owing to the optical transparency of Si 3 N 4 /MoS 2 -PEDOT: PSS composite CEs, bifacial DSSCs based on 5% Si 3 N 4 /MoS 2 -PEDOT: PSS CE yield 2.03% PCE from rear irradiation. The simple preparation method, high catalytic activity and electrochemical stability demonstrate that Si 3 N 4 /MoS 2 -PEDOT: PSS can be used a transparent CE in bifacial DSSCs.
研究领域:
材料科学
·
能源科学
·
纳米技术
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Yiwei Dong,Bing Ren,Yubing Yang,Yongchang Mu,Yunlan Liu,Chenxu Wang,Jie Li,Jing Han
A eutectic solvent replacement strategy is proposed to synergistically regulate the polymer network and the conductive phase of PEDOT: PSS-based gels. • The optimized eutectogel achieves exceptional fracture strength, toughness and a high gauge factor. • The electrical enhancement involves conformational transition of PEDOT and improved conductivity from metal ion. • The sensor based on PEDOT: PSS eutectogel successfully enables monitoring during post operative cervical spine rehabilitation. Flexible electronics have sparked significant interest for their potential applications in diverse fields. Among these, poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT: PSS)-based hydrogels have emerged as star materials in flexible electronics, yet their sensing capabilities remain constrained by compromised mechanoelectrical coordination. Herein, we present an approach through a eutectic solvent exchange strategy that synergistically regulates mechanical and electrical performance. Specifically, molecular engineering via eutectic solvent-enhanced hydrogen bonding strengthens interchain interactions to improve toughness, while electrical engineering involves (i) conformational transition of PEDOT from coiled benzoid to linear quinoid structure and (ii) the ionic conductivity contributed by Fe 3 + further enhances the conductivity. The optimized eutectogel (MSPFe60) achieves fracture strength (0.98 MPa), toughness (9.97 MJ·m −3 ), and gauge factor (GF= 21.2). We further demonstrate MSPFe60’s potential in postoperative cervical spine rehabilitation monitoring through real-time motion signal capture. Download: Download high-res image (283KB) Download: Download full-size image
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DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Zerun Sun,Jie Zhao,Han Peng,Mingjia Zou,Guofeng Cui
A major obstacle in the development of solid contact ion-selective electrodes (SC-ISEs) is the frequent calibration procedures due to the low reproducibility of standard potential(E 0 ) and the unstable signals. To address these challenges, we developed an all-solid state miniature sodium ion-selective electrode (Na + -ISE) based on acid-doped poly(3,4-ethylenedioxythiophene)-polystyrene sulphonate (PEDOT: PSS) as the solid contact layer, in combination with an external polarization technique. Acid doping minimized the Coulomb interaction between PEDOT and PSS, inducing significant phase separation and conformational re-aggregation of PEDOT chains, thus creating more contact points to facilitate charge transport and ion-to-electron transduction. The sensor exhibited excellent potentiometric performance with a detection limit of 5.90378 μM and potential drift of 10.99 μV/h. More importantly, external polarization significantly improved E 0 reproducibility across different electrodes (standard deviation reduced from 57.41 mV to 1.95 mV) and reduced batch-to-batch E 0 variability. The performance of the potentiometric sensor system was evaluated in inactivated fetal bovine serum, and the measurement results were highly comparable to those of the reference methods with deviation of less than 4 %. The electrochemical sensing system developed in this study provides a novel strategy for highly stable sodium ion sensing, indicating promising potential for calibration-free measurement in medical application.
研究领域:
电化学
·
传感器与生物传感器
·
材料科学
·
分析化学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2024
·
IF 8.3
Bowen Zhou,Juan Luo,Ruitao Li,Rongrong He,Tao He
Oxidation resistant nanofiltration (NF) membranes have been pursued for wide applications. Mostly researched NF membranes were based on interfacial polymerization (IP) technology, which is not stable in oxidative chemicals. In this paper, a novel layer-by-layer (LBL) self-assembled NF membrane prepared by coating poly(vinylbenzyltrimethylammonium chloride)/poly(styrene sulfonic) (PVBTMAC/PSS) on a polyethersulfone (PES) substrate was presented with exceptionally high permeance and oxidation resistance. The optimized NF membrane of [PVBTMAC/PSS] 8.5 demonstrated a pure water permeance (PWP) of 47.6 L/(m 2 ·h·bar) and nearly 100% rejection for various dyes. The PVBTMAC/PSS membrane showed distinct rejection to asymmetric salts (MgCl 2 , Na 2 SO 4 ) following Donnan exclusion. Excellent chlorine resistance was found after 150,000 ppm·h sodium hypochlorite treatment for both [PVBTMAC/PSS] 8.5 and [PVBTMAC/PSS] 9 , demonstrated by the stable rejection to MgSO 4 and prussian blue (PB) dye with reduced pore size. Declined rejection to MgCl 2 and increased rejection to Na 2 SO 4 was explained by oxidation of the highly active α-H on the aromatic ring side group of PVBTMAC to -COO − and Donnan exclusion effect. The integrity of LBL NF membranes was caused by additional π-π stacking between the polyelectrolytes. Both membranes demonstrated good long-term operational stability for dye separation with great potential for real applications.
研究领域:
材料科学
·
环境工程
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
TaoTao Fan,Chenling Huang,Rong Chen,Jianping Xu,Chunyan Wang,Yong Qian
In this study, we proposed an effective and rational method for in situ decoration of tin dioxide (SnO 2 ) nanoparticles on single-walled carbon nanohorns (SWNHs) by using poly (sodium 4-styrenesulfonate) (PSS) as dispersing agent and stabilizer. The morphology and nanostructure of SnO 2 /SWNH composites were tested by TEM, XRD and XPS in detail. The results indicated that uniform dispersion of SnO 2 nanoparticles with mean size about 5nm on the SWNHs. The nanocomposites as electrode materials for high-performance supercapacitors were tested by cyclicvoltammetry (CV) and galvanostatic charge-discharge (GCD). Experimental results exhibited a high specific capacitance of 180.69 F/g at 1 A/g in 1 M Na 2 SO 4 electrolyte. The SnO 2 /SWNH composites showed good cycling stability, which the retention rate of the specific capacitance was 80.72% after 1200 times of charge and discharge cycles.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2023
·
IF 4.6
Jing Li,Hai Nie,Guoyun Zhou,Yan Hong,Wei Meng,Yongkang Zhu,Qinghua Huang
Flexible, biocompatible temperature sensors are of great importance for future developments in wearable electronic skin. Herein, a high resolution, fast response, biocompatible negative temperature coefficient (NTC) temperature sensor comprised of poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT: PSS) and phthalocyanine copper (CuPc) is developed. The addition of CuPc with high electron mobility to PEDOT: PSS increases the effective electron transition under the action of thermal energy , and thus its thermoelectric performance of the material is improved. The packaged sensor can monitor temperature changes in the range of 20 °C to 80 °C in real time with high sensitivity (0.1940% °C −1 ), linearity (R 2 =0.994) and accuracy (0.1 °C). When the ambient temperature of the sensor changes from 25 °C to 50 °C, the response and recovery time of the sensor are ∼ 1 s. The performance of the sensor has not decreased significantly after 4 weeks of continuous operation, which validates the high reliability of the sensor in the extended working time. Furthermore, the comparison between the PEDOT: PSS/CuPc sensor and commercial infrared thermal imager on different parts of the human body temperature measurement shows that the PEDOT: PSS/CuPc sensor is applicable in electronic skin, medical detection and other fields.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）