Materials Research Express
·
2019
·Vol. 6
·期 11
·116425
·
IF 1.449
Ying Tian,Tao Wang,Hong-Zhang Geng,Anita Sagadevan Ethiraj,Ze-Zeng Gu,Li-Chao Jing,Xiao-Tong Yuan,Hui Zhao,Jian-Gong Wen,Zi-Han Xu
Flexible transparent conducting films (TCFs) have attracted more and more attention for their wide range of potential applications. PEDOT: PSS, as a conductive polymer, have been widely used in TCFs for its potential to boost electricity and maintain higher transmittance. While, there are many problems to be solved urgently in the application of PEDOT: PSS in TCFs. Carbon nanotube (CNT) with excellent electrical, thermal, and mechanical properties is also important material for making TCFs. In this study, films formed by PEDOT: PSS hybrid CNTs are prepared by a simple spin coating process. The purpose of this combination is that CNTs are helps to maintain the overall conductance of the nanocomposite films or inhabit degradation of film performance once PEDOT: PSS degrades due to water absorption and aging, while maintaining high transmittance and low resistance. The ratio of PEDOT to PSS and the internal morphology of the PEDOT: PSS are changed by a two-step method of methanol and acid, which are beneficial to greatly reduce the sheet resistance, lower the roughness, and enhance the adhesion. Various test samples were characterized, and results show that TCFs prepared by PEDOT: PSS hybrid CNTs treated by a two-step method exhibit enhanced properties. The best performance of the film was found to be 65 Ω sq−1@92 T%. High transmittance, super strong adhesion, low roughness (2.82 nm), low sheet resistance and high resistance stability are all achieved at the same time, which is a great advantage to use the films as electrodes in various fields, such as OLEDs.
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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
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jun Dai,Simin Wei,Jiarong Xu,Huiying Xue,Zhaojun Chen,Meng Wu,Wei Chen,Xiaoding Lou,Fan Xia,Shixuan Wang
Metronomic photodynamic therapy (mPDT), which induces cancer cell death by prolonged intermittent continuous irradiation at lower light power, has profoundly promising applications. However, the photobleaching sensitivity of the photosensitizer (PS) and the difficulty of delivery pose barriers to the clinical application of mPDT. Here, we constructed a microneedle-based device (Microneedles@AIE PSs) that combined with aggregation-induced emission (AIE) PSs to achieve enhanced mPDT for cancer. Due to the strong anti-photobleaching property of the AIE PS, it can maintain superior photosensitivity even after long-time light exposure. The delivery of the AIE PS to the tumor through a microneedle device allows for greater uniformity and depth. This Microneedles@AIE PSs-based mPDT (M-mPDT) offers better treatment outcomes and easier access, and combining M-mPDT with surgery or immunotherapy can also significantly improve the effectiveness of these clinical therapies. In conclusion, M-mPDT offers a promising strategy for the clinical application of PDT due to its better efficacy and convenience.
研究领域:
肿瘤学
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药学
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生物医学工程
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治疗学
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PubMed
高影响因子
ANALYST
·
2023
·
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
·
分析化学
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生物医学工程
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PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 2
·1-17
·
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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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
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
BIOELECTROCHEMISTRY
·
2025
·
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
·
临床检验
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Dongzhi Zhang,Zhanjia Kang,Xiaohua Liu,Jingyu Guo,Yan Yang
This paper demonstrates a QCM ammonia gas sensor based on PSS-doped ZIF-8-derived porous carbon and polyaniline decorated nanocomposite (PSS/ZIF-C/PANI). The PSS/ZIF-C/PANI composite was successfully prepared by MOFs template-carbonization and in-situ polymerization. The morphology and structure composition of the prepared samples were completely tested by various material characterization methods. The ammonia sensing properties of PSS/ZIF-C/PANI coated QCM sensor at room temperature were systematically studied. Experimental results show that the sensor possesses quite sensitivity (5.67 Hz/ppm), excellent linearity, high response/recovery capability (28 s/17 s) and selectivity towards ammonia. Meanwhile, the electrical parameters and quality factor of QCM were verified by impedance analysis. Furthermore, the potential ammonia adsorption mechanism can be mainly related to the synergistic effect of composite nanomaterials . This work confirms that the PSS/ZIF-C/PANI composite provides a new avenue for QCM ammonia sensing, and the sensor is expected to become a potential candidate for ammonia detection.
研究领域:
材料科学
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化学传感器
·
纳米材料
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高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
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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高影响因子
Journal of Materials Chemistry B
·
2017
·Vol. 5
·期 9
·1712-1723
·
IF 4.543
Rui He,Mingxian Liu,Yan Shen,Zheru Long,Changren Zhou
Here, polystyrene sulfonate sodium (PSS) modified Halloysite nanotubes (HNTs) were self-assembled into a patterned coating on a glass substrate with ordered nanotube arrays in a slit-like confined space. The microstructure of the formed patterned HNTs coating was investigated. The formed strips are more regular and almost parallel to each other with an increase in HNTs concentration. The HNTs coating formed from the 2% PSS-HNTs dispersion has the maximum nanotube alignment degree. The patterned HNTs coating was employed to capture tumor cells. The tumor cells can be captured by the HNTs coating effectively compared with a smooth glass surface due to the enhanced topographic interactions between the HNTs coating and cancer cells. The HNTs coating prepared from the 2% PSS-HNTs dispersion has the highest capture yield which is due to the ordered nanotube arrangement and the appropriate surface roughness. The HNTs coating was further conjugated with anti-EpCAM, which leads to the capture yield of MCF-7 cells reaching 92% within 3 h. The HNTs coating can capture 8 MCF-7 cells from 1 mL artificial blood samples spiked with 10 MCF-7 cells, showing the promising applications of HNTs in clinical circulating tumor cell capture for early diagnosis and monitoring of cancer patients.
研究领域:
纳米技术
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生物材料
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癌症研究
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生物医学工程
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PubMed
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Kobina Kwansa Hammond,Yiliang Chen,Tongxiao Hong,Wenxu Song,Lijie Xu,Hao Shi,Jiaqiang Zheng,Honghua Ruan
Deep purification of heavy metals from complex aqueous matrices is a critical challenge in water remediation. In this study, a novel hierarchical adsorbent (RS-PSS/PEI-HTO) was developed by self-assembling poly(sodium 4-styrenesulfonate) (PSS), polyethyleneimine (PEI), and hydrated titanium oxide (HTO) onto rice straw. This ternary coating transformed the low-value biomass into a high-performance sequestration platform with enhanced structural integrity. System characterization (SEM-EDS, FTIR, and TGA) confirmed the successful formation of a stable interface with uniformly dispersed HTO nanoparticles mediated by the amine-rich PEI layer. Batch equilibrium studies revealed that the adsorption process followed the Langmuir model with an exceptionally high affinity constant (K L = 31.16 L/mg), enabling the capture of trace Cu(II) to near-zero residual levels. The adsorption mechanism was driven by the synergistic interaction of the ternary components: electrostatic pre-enrichment by PSS, high-density amine chelation by PEI, and specific metal–oxygen coordination by HTO. The composite maintained high selectivity for Cu(II) despite a 20-fold molar excess of Ca 2+ and Mg 2+ . Fixed-bed column studies validated its efficacy, reaching a breakthrough point of 225 Bed Volumes (BV) while keeping effluent Cu(II) below 0.1 mg/L, a five-fold improvement over binary RS-HTO. The exhausted adsorbent was easily regenerated with HCl-NaCl, demonstrating excellent stability and reusability. This research provides a sustainable "waste-to-wealth" paradigm for engineering high-affinity materials tailored for the deep purification of heavy-metal-contaminated wastewater. Download: Download high-res image (249KB) Download: Download full-size image
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 11
·7008-7021
·
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
·
能源转换
·
电化学
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高影响因子
危险品化学品经营许可证（带存储）