Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 27
·9355-9365
·
IF 6.4
Qiang Gao,Chao Li,Mingxu Wang,Jiadeng Zhu,Chunxia Gao
Biomedical hydrogels always suffer from curvilinearity, deformability, and wetness associated with bio-tissues, which are therefore limited by low stability and longevity in practical applications. To overcome these issues, we have proposed a robust PAA/PEDOT conductive hydrogel and investigated its performance by using a low-crosslink-density polyacrylic acid (PAA) hydrogel with 82 wt% water. Meanwhile, poly(3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) has been used as both a major junction point and a conducting network contractor. Benefiting from the introduction of PEDOT:PSS, the resultant composite hydrogel exhibits strong adhesion (37.2 kPa), well-matched modulus with skin tissue (∼10 kPa), low swelling (2.88), and negligible hysteresis (η = 2.7% of 200% stretching, energy loss coefficient). As a scalable application platform, we have further demonstrated the potential application of this novel hydrogel as body-conformable electronics in a series of conceptual displays, including a full range of human motion responses, ECG signal detection, TENG device assembly, and energy harvesting application.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2025
·
IF 2.7
Gen Li,Junhao Cheng,Baoyang Lu
Strain sensors based on Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hydrogels have attracted extensive attention in various fields such as wearable devices and epidermal electronics. However, developing high-performance strain sensors with excellent mechanical properties, strong adhesion, and advanced processing compatibility remains a significant challenge. In this study, a high-performance strain sensor is fabricated by 3D printing a novel Polyvinyl alcohol (PVA)-PEDOT:PSS-Hydroxypropyl methylcellulose (HPMC)-dopamine hydrochloride (DA-HCl) (PPHD) composite ink. The PPHD ink exhibits favorable rheological properties, making it suitable for direct ink writing (DIW) 3D printing, thereby enabling pattern customization and personalized fabrication. The hydrogel printed from this ink exhibits high toughness (>2 MJ·m⁻ 3 ) and strong adhesion (38 kPa). When further assembled into a strain sensor, the device demonstrates a fast response time of 200 ms, high linearity (R 2 = 0.99), and stable performance under 1000 cyclic loading and various frequency conditions, allowing for real-time monitoring of diverse human motions. This work establishes a conductive hydrogel strain sensing platform that integrates printability, strong adhesion, and excellent mechanical performance, and it is successfully applied in gesture recognition using a three-channel system. The outstanding performance of the PPHD hydrogel-based strain sensor holds great promise for a wide range of bioelectronic applications, such as wearable electronics and electronic skin.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 14
·3226-3235
·
IF 7
Taotao Yang,Ming Yang,Chao Xu,Kun Yang,Yuming Su,Yongqin Ye,Lingyun Dou,Qin Yang,Wenbo Ke,Bin Wang,Zhiqiang Luo
Conducting polymer hydrogels, especially poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hydrogels, show great promise in soft bioelectronics due to their high conductivity and the ability of electrical coupling with tissues for sensing and stimulation. However, it is challenging to solve the problem of poor biocompatibility of PEDOT:PSS hydrogels due to the existing harsh preparation methods with the use of toxic and harmful reagents. Herein, we report the synthesis of PEDOT:PSS hydrogels with positively charged conductive polymers as a cross-linker and the application of PEDOT:PSS hydrogels as in situ electrochemical sensors for living cells. The conductivities of PEDOT:PSS hydrogels prepared using this method without any toxic or harmful reagents can reach up to 3265 S m−1. The facile synthesis approach with a simple mixture of PEDOT:PSS aqueous solution and the monomers of conductive polymers at room temperature also enables the printability of PEDOT:PSS hydrogels to fabricate patterned electrodes. Moreover, all the proposed PEDOT:PSS hydrogels demonstrated good biocompatibility. The in situ electrochemical detection of dopamine secreted from PC12 cells cultured within PEDOT:PSS hydrogels suggests that our PEDOT:PSS hydrogels with high conductivity and biocompatibility offer great potential for the integration of biosensors within 3D cell culture.
研究领域:
生物医学工程
·
材料科学
·
细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiu-Yan Cheng,Shu-Qiang Peng,Li-Xin Wu,Qing-fu Sun
3D-printed stretchable sensors have promising applications in wearable devices, human–computer interaction, soft robotics, and many other fields. However, low conductivity and poor stretchability still hinder their extensive applications. Herein, we report a strategy of double networks and annealed PEDOT:PSS for the first time. The new material combines mechanical stretch performance and conductivity together, where 3D-printed complex stretchable poly(2-hydroxyethyl acrylate-isobornyl acrylate) (PHI) structure serves as the tough network and annealed highly conductive PEDOT:PSS serves as the functional network. It is adopted to build 3D-printed porous stereo structures with both stretchability and conductivity. It exhibits interconnected uniform networks, improved storage modulus (1.3 * 10 6 Pa), higher conductivity (The conductivity of PHI/PEDOT: PSS annealed is up to 3.12 * 10 −1 S m −1 , which is 441 times compared to PHI/PEDOT: PSS), excellent stability and durability at a large strain of 60%. Hence, it is expected that this new strategy will open up wide possibilities for designing stretchable sensors and smart devices.
研究领域:
材料科学
·
柔性电子
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2020
·
IF 8.821
Ting Xu,Dongzhi Yang,Shiyi Zhang,Tianyu Zhao,Ming Zhang,Zhong-Zhen Yu
Although aqueous fibrous supercapacitor is one of the most advantageous energy storage devices for powering wearable electronics due to its excellent flexibility, outstanding cycling stability and high safety, it is still a challenge for its electroactive components to be cold-tolerant and stretchable for adapting fluctuating climate environments. Herein, a graphene/PEDOT:PSS hydrogel fiber with a continuous rose flower-like network is firstly constructed, and an antifreezing polyvinyl alcohol (PVA) network is subsequently taken into the hydrogel fiber via solvent replacement to generate an antifreezing and stretchable graphene/PEDOT-PVA hydrogel fiber with dual networks. Benefiting from superior interface compatibility of the hydrogel fiber with a PVA electrolyte, the assembled all-gel-state supercapacitor delivers a high capacitance of 281.2 F g −1 (0.1 A g −1 ) at 25 °C, more than twice higher than that of an aerogel fiber-based supercapacitor. Furthermore, this supercapacitor exhibits stable subzero-temperature electrochemical performances due to the smooth ion-transport channels and good conductivity of the antifreezing hydrogel fiber electrode, evidenced by the high specific capacitance of 212.6 F g −1 and the excellent capacitance retention of 91% after 5000 charge/discharge cycles at −20 °C. Finally, a highly stretchable spring-like supercapacitor exhibits an excellent capacitance retention of 92% after 5000 stretching cycles at a strain of 500%.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Wen Chen,Han Xiao,Xufeng Zhou,Xueyan Xu,Shunqiong Jiang,Zhihong Qin,Shiyun Ding,Cancan Bian,Zhaoping Liu
Graphene films have been extensively applied in supercapacitors owing to their high electrical conductivity and good mechanical strength; however, their application in stretchable supercapacitors is still hampered by their low elastic deformation ability. Herein, hybridizing graphene with the hydrogel of a conductive polymer (PEDOT:PSS) endows graphene films with substantially improved ductility. The resultant graphene-conductive polymer hydrogel composite film (GCPH) can be stretched to as long as 114.6% of its original length. Meanwhile, it possesses a much higher specific capacitance (28.52 F g–1) than that of the pure graphene film, as the PEDOT:PSS hydrogel prevents graphene from restacking. A proof-of-concept all-gel-state planar supercapacitor based on GCPH film electrodes is fabricated, which exhibits excellent electrochemical performance under a stretching state. The device shows no significant capacitance decline even when it is stretched to 220% of its original length (20% more than the pre-strain limit), and it maintains 98.23% of its initial capacitance after repeated stretching–releasing cycles.
研究领域:
材料科学
·
能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
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
·
电化学
·
生物传感器
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Huanjing Chen,Wanqiao Bai,Hongmei Chai,Loujun Gao
To achieve the rapid and sensitive detection of trace methyl parathion (MP) in river water and edible agricultural products, the catalytic composite material zirconium hydroxide (Zr(OH)4)/zeolite imidazolate framework-90 (ZIF-90) was prepared by a one-step synthesis method. The composite was further incorporated with a conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hydrogel to prepare a modified electrode. Then, an electrochemical sensing method based on the PEDOT:PSS/Zr(OH)4/ZIF-90 composite was successfully established for the analysis and detection of MP. The component ratio of the composite material, modification amount and pH value of the detection substrate were optimized. The electrochemical properties of the composite modified electrode were evaluated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques, and the results confirmed that it had good electrochemical properties. The electrochemical response of the established sensing method to MP showed a good linear relationship in the concentration range of 1–250 µmol L−1, and its detection limit and sensitivity reached 0.74 µmol L−1 and 0.09 µA µmol−1 L−1, respectively. The interference of common coexisting ions on the detection performance of the PEDOT:PSS/Zr(OH)4/ZIF-90 modified electrode was further investigated, and it was applied for the quantitative analysis of MP in actual river water and apple samples. The electrochemical sensing method developed in this work provides a new way for the efficient detection of MP residues in environmental water and agricultural products.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Zhenying Xu,Jingyao Song,Bingrui Liu,Shaoping Lv,Fengxian Gao,Xiliang Luo,Peipei Wang
Noninvasive wearable sensors present key information about targeting epidermally retrievable biofluids in human health monitoring. Tracking circulating uric acid (UA) in human sweat performs a simple and prompt way for reducing risk of gout and hyperuricemia. Herein, we propose a wearable microfluidic-based electrochemical sensor via incorporating conducting polymer PEDOT:PSS hydrogel towards accurate and sensitive detection of UA in sweat. The microfluidic device validly realizes the capture for sweat in real-time, and the conducting PEDOT:PSS hydrogel with large surface area plays multiple roles in this wearable sensor for UA detecting, electrolyte storing, and flexibility enhancing. The prepared flexible sensor shows an ultrahigh sensitivity of 0.875 µA µM −1 cm −2 and a low limit of detection (LOD) down to 1.2 μM (S/N = 3). Furthermore, it can detect UA levels in real human sweat samples collected from volunteers before and after purine-rich diets, and the results are highly correlated with those measured by the standard enzyme linked immunosorbent assay (ELISA). This PEDOT:PSS hydrogel based flexible sensor, together with the sweat-collecting microfluidic device, is believed to be promising for the construction of high performance wearable sensors to monitor biomarkers, metabolites and nutrients.
研究领域:
生物传感器
·
可穿戴技术
·
电化学
·
健康监测
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Rui Zhu,Peng Sun,Guofeng Cui,Yaoguang Yu,Shaojun Ke,Jie Zhao
The exploitation of ion-selective membranes with high power density and low resistance is crucial for harvesting osmotic energy in natural environments. However, the exploration of membranes that synergistically satisfy the demands of these properties in osmotic energy conversion remains largely unresolved. Herein, we demonstrate the application of a negative surface-modified 3D porous poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) hydrogel for osmotic membranes, which effectively improved their deficiencies. Experiments, validation and simulations confirmed that the hydrogel membranes have remarkable space charge-modulated ion transport properties. Consequently, an impressive power output of 6.26 W m−2 can be realized, which exceeds the prevailing commercial standard (5 W m−2). Meanwhile, five device units were connected in series to charge a supercapacitor which exhibited an impressive selectivity rate of 95.6%, coupled with an electrochemical energy conversion efficiency of approximately 45.8%. This research paves a new avenue towards the application of hydrogels in ultra-high performance osmotic membranes.
研究领域:
材料科学
·
纳米技术
·
能量收集
·
电化学
·
膜技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）