MICROCHIMICA ACTA
·
2019
·Vol. 187
·期 1
·1-8
·
IF 5.479
Yang Lili,Wang Hao,Lü Haitao,Hui Ni
A nanocomposite consisting of phytic acid (PA) that was doped with poly(3,4-ethylenedioxy-thiophene) (PEDOT) and modified with copper nanoparticles (CuNPs) was placed on a glassy carbon electrode and then applied in an enzymeless glucose sensor. The undulating PEDOT/PA composite has good conductivity and a large surface area, which was suitable as substrate for the uniform growth of CuNPs. The modified electrode typically operated at a potential near 0.55 V (vs. Ag/AgCl) demonstrated remarkable catalytic activity towards direct oxidation of glucose in NaOH solution (the major limitation of this sensor). Figures of merit include (a) a wide analytical range (5 to 403 μM); (b) high sensitivity (79.27 μA·μM −1 ·cm −2 ), (c) a low detection limit (0.28 μM at a signal to noise ratio of 3), and (d) fast response (< 4 s).
A nanocomposite of phytic acid (PA) doped poly(3,4-ethylenedioxy-thiophene) (PEDOT) modified with copper nanoparticles (CuNPs) onto a glassy carbon electrode was prepared by electrochemical strategy. The CuNPs/PEDOT/PA-modified electrodes were applied in enzymeless glucose sensors with high performance.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES COMMUNICATIONS
·
2021
·
IF 6.617
Bo Yang,Wentuan Bi,Fengxian Jin,Xiaojia Ma,Sheng-Qi Guo
Photodetectors that can directly convert optical signals into electrical signals offer great application prospects in next-generation optoelectronic nanodevices . But to-date, unsatisfactory light absorption and charge carrier separation efficiency still limit their applications. Herein, we developed a facile and low-cost surface molecular engineering strategy to construct high-performance photodetector with CsPbBr3 perovskite nanosheets . Because of the improved optical absorption and charge transfer behavior, CsPbBr 3 /poly(3-hexylthiophene) (P3HT) film photodetector presents a fast response speed, excellent stability and reproducibility. We anticipate that our results not only demonstrate the effectiveness of surface molecular engineering in film photodetector design, but also provide a facile and cost-effective strategy applicable for broadband light optical sensor production.
研究领域:
材料科学
·
光电子学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2012
·
IF 3.898
Guiyun Xu,Beibei Li,Xiliang Luo
A sensitive amperometric sensor for the selective detection of hydroquinone in cosmetics was developed based on the excellent electrocatalytic property of carbon nanotube (CNT) doped poly(3,4-ethylenedioxythiophene) (PEDOT) conducting polymer toward the oxidation of hydroquinone. The oxidation potential of hydroquinone on the PEDOT/CNT modified carbon paste electrode was much lower than that on the bare electrode, and the charge transfer rate constant for the oxidation of hydroquinone was significantly increased from 0.45 to 1.84 s −1 after the modification with PEDOT/CNT. Under optimal conditions, the differential pulse voltammetry current of the sensor was linear with hydroquinone concentration across a 1.1–125 μM range and associated with a detection limit of 0.3 μM. Significantly, the detection limit is comparable or better than many current electrochemical hydroquinone assays, and the sensor is potentially much cheaper and easier for fabrication. The sensor was capable not only of comfortably quantifying hydroquinone in the presence of common interferences but also doing this in real cosmetics samples with satisfying accuracy.
研究领域:
分析化学
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材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2013
·Vol. 51
·期 13
·2939-2947
·
IF 3.543
Zong-Quan Wu,Cheng-Gang Qi,Na Liu,Ying Wang,Jun Yin,Yuan-Yuan Zhu,Long-Zhen Qiu,Hong-Bo Lu
In this article, the synthesis of a series of conjugated rod–rod block copolymers based on poly(3-hexylthiophene) (P3HT) and poly(phenyl isocyanide) (PPI) building blocks in a single pot is presented. Ni-catalyzed Grignard metathesis polymerization of 2,5-dibromo-3-hexylthiophene and subsequent addition of 4-isocyanobenzoyl-2-aminoisobutyric acid decyl ester in the presence of Ni(dppp)Cl 2 as a single catalyst afford P3HT- b -PPI with tunable molecular weights and compositions. In solid state, microphase separation occurred as differential scanning calorimetric analysis of P3HT- b -PPI revealed two glass transition temperatures. In solutions, the copolymers can self-assemble into spherical aggregates with P3HT core and PPI shell in tetrahydrofuran and exhibit amorphous state in CHCl 3 . However, atomic force microscopy revealed that the block copolymers self-assemble into nanofibrils on the substrate. These unique features warrant the resultant conjugated rod–rod copolymers' potential study in organic photovoltaic and other electronic devices. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 2939–2947
研究领域:
材料科学
·
高分子化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2022
·
IF 4.855
Pengfei Zhao,Rongxue Ji,Jie Lao,Chunli Jiang,Bobo Tian,Chunhua Luo,Hechun Lin,Hui Peng,Chun-Gang Duan
With the advantages of wide bandwidth, low power consumption, high propagation speed, and excellent interconnectivity, the light-tunable synapse is regarded as one of the most promising candidates to pave the way for constructing neuromorphic computing and overcoming the von Neumann bottleneck. Herein, an optoelectronic synaptic memristor based on zinc oxide/poly(3-hexylthiophene) (ZnO/P3HT) heterojunction is fabricated via a simple two-step spin coating process. The prepared device can simulate typical neuromorphic manners, such as excitatory postsynaptic current (EPSC), paired-pulse facilitation (PPF), the transformation from short-term plasticity (STP) to long-term plasticity (LTP), and “learning-experience” behavior by modulating the applied light pulses. In addition to the optoelectronic synaptic behaviors, our device incorporates light logic functions (“AND” and “OR” operations) and optical information detection and memory functions analogous to those in the human’s visual recognition memory system.
研究领域:
材料科学
·
神经科学
·
计算机科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Boxiao Li,Dongkai Ni,Juncheng Fan,Jian Zhou
Synthesizing of highly conductive conjugated polymers on target substrates must consider both the reaction regime and adhesion. Vapor phase polymerization (VPP) with a relatively simple procedure and mild reaction temperature (40–50 °C) is favorable for polymerization of poly(3,4-ethylenedioxythiophene) (PEDOT) on PET substrates. However, achieving high conductivity and good surface adhesion with target substrates has been challenging. Addressing this, we report that weak alkalinity and enriched amine groups of polyethyleneimine (PEI) were used as a base inhibitor and grafting agent during VPP to improve the PEDOT film's electrical and mechanical properties. The base-inhibited VPP results in a needle-like morphology with enhanced crystallinity in PEDOT, and with this, the conductivity of 1980 S/cm has been achieved. Moreover, many amine groups with high chemical activity in PEI make it successfully grafted on the polydopamine (PDA)-coated substrates. The surface grafting of PEI in PEDOT with PDA through Schiff base and Michael addition reactions make the PEDOT film resistant to ultrasonic cleaning in water or organic electrolyte, presenting significant potential in applying washable and cleanable electronics. We then demonstrate an anti-ultrasonic cleaning electrochromic display based on vapor phase polymerized PEDOT. This work experimentally confirms that PEI is critical in ensuring high-performance PEDOT films. Incorporating this technique on a PET-based medical face shield renders robust wearable electronics.
研究领域:
材料科学
·
电子工程
·
医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Tengfei Li,Lihua Wang,Jian Li
All-organic batteries that employ organic compounds as the cathode- and anode-active materials have emerged as a promising rechargeable battery chemistry system due to their environmental friendliness, sustainability, flexibility and wide raw materials availability. Just like current lithium-ion batteries, if operated improperly, there are also safe concerns mainly caused by thermal runaway in all-organic batteries. However, the safety protection for all-organic batteries has not been explored by far. In this work, a novel type of temperature-responsive symmetric all-organic battery with overheating self-protection function is proposed based on poly(3-octylthiophene) (P3OT) as both cathode- and anode-active materials. P3OT is anchored on carbon nanotube (CNT) surface to boost its p- and n-type redox activity. Rewarded by this, the resulting all-organic battery delivers a reversible capacity of 97.2 mAh g −1 at 50 mA g −1 between 0.01 and 2 V and exhibits an outstanding cycling stability. More importantly, when being charged under overheating conditions, the designed all-organic battery can always maintain the low state-of-charge. It can provide an early warning of battery overheating, and mitigate the release of chemical energy if the battery finally goes to fire. During the discharge process, the all-organic battery will be rapidly switched off, thus avoiding continuous battery damage. The thermal protection is proved to be derived from the thermal dedoping of PF 6 - from cathode-active P3OT. In addition, the all-organic battery is able to resume its normal function when battery temperature is dropped to room temperature.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Xianping Du,Ying Huang,Zhenhe Feng,Jiaming Wang,Xu Sun
Silicon-based (Si-based) materials have been highlighted for their high specific capacity and abundant reserves. However, the limited electrical conductivity and the large volume expansion are critical barriers to their extensive application. The most targeted remedy is the incorporation of selected conductive materials and the tailored design of electrode structures . Herein, carbon-MXene (C-MXene) and poly(3,4-ethylenedioxythiophene) (PEDOT) were employed to decorate Si cores to obtain Si-x@C-MXene@PEDOT particles. Among them, the content of Si was regulated for an optimal electrochemical performance. More significantly, given that the common single-layer core-shell structure was inherently inadequate in resisting the volume change, the core-bishell structure offered a robust buffer layer that consisted of a hard inorganic C-MXene and an organic PEDOT coating with an elastic conductive network, which collaboratively addressed the volume expansion issue. The resulting Si-2@C-MXene@PEDOT also possessed an excellent conductivity-promoting layer consisting of C-MXene and PEDOT, which facilitated the rapid transport of electrons, thus significantly boosting the electrochemical performance of the final electrodes. Also, the core-bishell structure assisted in the formation of a thinner solid electrolyte interface (SEI) film, which avoided the massive consumption of Li + and enhanced the lithium storage capability. This work was expected to open up possibilities for larger-scale applications of Si-based materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yuning Sun,Changjun Huang,Yuexin Liu,Xiaoli Zhao,Kefeng Cai
Manganese-based aqueous zinc-ion batteries (AZIBs) are considered promising cathode materials for large-scale energy storage applications due to their low cost and high safety. However, the primary constraints on achieving high specific capacity and cycling stability are the inherent low conductivity and suboptimal structural stability of the AZIB cathodes. Herein, we report a high-performance poly(3,4-ethylenedioxythiophene) (PEDOT)-coated vanadium-doped MnO2 nanorod (NR) electrode for AZIBs. First, vanadium-doped MnO2 (V-MnO2) NRs were synthesized by a simple hydrothermal synthesis method. The V-MnO2 NRs were further encapsulated with a nanolayer of PEDOT through an in situ polymerization process, which was subsequently treated with sulfuric acid to achieve a smooth surface. The V doping creates oxygen vacancies within the MnO2, allowing for the rapid embedding and diffusion of Zn2+. The PEDOT nanolayer greatly enhances the conductivity and structural stability of the V-MnO2. Benefiting from the unique features, an optimal composite NRs electrode exhibits a high specific capacity of 250 mAh g–1 at 0.4 A g–1, a high energy density (388 Wh kg–1 at 151 W kg–1), and excellent stability over 5000 cycles at 3 A g–1. In addition, the flexible pouch cell assembled with the electrode shows good stability under bending. Given the positive outcomes, the material holds great potential for use as a cathode in next-generation flexible energy storage systems.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Shiwei Liu,Kai Li,Qingyi Shen,Dandan Shao,Shansong Huang,Youtao Xie,Xuebin Zheng
Electroactive biointerfaces on metallic implants can transduce electrical into ionic signals under exogenous electrical stimulation (ES), which have been proposed to compensate the mislaid bioelectricity signals in bone defects. However, unsatisfied electrical properties and long-term stability are the major issues that hinder their clinical applications. Herein, based on the merits of birnessite-type MnO 2 (the large capacitance and effective surface area) and poly(3,4-ethylenedioxythiophene) (PEDOT, the high conductivity and physicochemical stability), MnO 2 -PEDOT composite nanocoatings (MnO 2 -P1 and MnO 2 -P2) were prepared by coating trace amounts of PEDOT onto the MnO 2 nanocoating surfaces via an in-situ polymerization method. The composite nanocoatings exhibited decreased charge transfer resistance and concurrently enhanced charge storage capacity. More importantly, the MnO 2 -P2 nanocoating with thicker PEDOT layer withstood higher voltages with minor loss of mass and charge injection capacity, thus enhancing mechanical and electrochemical stability. The composite nanocoatings were further applied to MC3T3-E1 osteoblastic cells to enhance their adhesion, proliferation and differentiation with the MnO 2 -P2 showing the greatest enhancement. Enhanced cellular proliferation on the MnO 2 -P2 nanocoating under ES could be ascribed to the combination of the ES-induced Ca 2+ -fibronectin interactions and the limited Mn 2+ release prevented by PEDOT protective layer.
研究领域:
生物材料学
·
组织工程学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Bowen Zhang,Abdelhadi El Jaouhari,Xiangrong Wu,Wei Liu,Jinhua Zhu,Xiuhua Liu
Rutin is one of the biologically active functional components present in a wide range of pharmacological applications. Herein, we reported the preparation of selective electrochemical sensor based on poly(3,4-ethylene-dioxythiophene) (PEDOT)-mesoporous carbon (MC) for rutin determination. The composite material was synthesized by in-situ polymerization and characterized using different analytical techniques such as FT-IR and SEM to evaluate the composition and the morphology. Cyclic voltammetry was performed for the electrochemical characterization of different modified electrodes and the parameters influencing the sensitivity of PEDOT-MC/AgNPs toward rutin such as accumulation time and pH were optimized. Under optimal conditions, the modified electrode provides a wide linear range and low limit of detection using differential pulse voltammetry (DPV). The GCE/PEDOT-MC/AgNPs electrochemical sensor shows high sensitivity, long duration stability, and good reproducibility and the PEDOT-MC/AgNPs have been successfully used for the detection of rutin in real samples.
研究领域:
材料科学
·
分析化学
·
药理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS CHEMISTRY
·
2010
·Vol. 21
·期 6
·1946-1952
·
IF 4.795
Shuping Liu,Lin Xu,Fengyan Li,Bingbing Xu,Zhixia Sun
A composite film containing poly(3,4-ethylenedioxythiophene) (PEDOT), polyoxometalate (POM) clusters K6P2W18O62·14H2O (P2W18) and polyallylamine hydrochloride (PAH) was fabricated by a smart combination of layer-by-layer (LbL) with electro-polymerization methods. The composite film displays enhanced electrochromic performance by incorporation of P2W18 into the PEDOT film. The electrochromic property of the film is significantly improved, resulting in an optical contrast of 54.7% at 600 nm and an absorbance that does not change after 1500 cycles. Additionally, the film provides broader absorption throughout the visible region. These results demonstrate the essential role of POMs in improving functionality on PEDOT for applications in electrochromic devices.
研究领域:
材料科学
·
化学
✓ 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）