Article
Materials Science, Multidisciplinary
Sara Zanchi, Antoine Pascaud, Fabrice Domingues Dos Santos, Sylvie Tence-Girault, Sebastien Roland
Summary: This article studies the electric responsiveness of P(VDF-co-TrFE) copolymer and P(VDF-ter-TrFE-ter-CTFE) terpolymer films in response to an external electric field. Factors such as chemical composition and thermal treatment affect the performance of these electroactive films. The study analyzes the nanoscale response using piezoresponse force microscopy on thin films (~100 nm thick), and the macroscopic response by measuring the electric displacement-electric field loops on thick films (~20 μm thick). The chemical composition (CTFE content) is crucial in defining the electroactive behavior at both scales, while the thermal treatment has a more significant impact at the nanoscale. The orientation, shape, and size of the crystalline lamellae affect the sensitivity of the electric dipoles to the applied electric field, and controlled growth of edge-on lamellar stacks improves the piezoresponse of the film.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Tu-Ngoc Lam, Chia-Yin Ma, Po-Han Hsiao, Wen-Ching Ko, Yi-Jen Huang, Soo-Yeol Lee, Jayant Jain, E-Wen Huang
Summary: The coaxial core/shell composite electrospun nanofibers exhibit superior mechanical and electrical properties compared to individual polymers, with enhanced mechanical anisotropy, good strength-ductility balance, and comparable dielectric responses. Additionally, an impressive piezoelectric coefficient is achieved in the composite structure, showcasing the promising approach of coaxial electrospinning in tuning the performance of electroactive polymers.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Yi-Jen Huang, Po-Han Hsiao, Chun-Chieh Wang, Chun-Jen Su, Jen-Hao Chang, Yu-Cheng Kuo, Wen-Ching Ko
Summary: Soft piezoelectric composite nanofibers composed of P(VDF-TrFE) and P(VDF-TrFE-CTFE) were prepared by coaxial electrospinning technique. The relationship between crystal structures and piezoelectric responses was investigated. The piezoelectric voltages of the composite nanofibers were approximately 3.0 V and 3.5 V at 10 Hz and 100 Hz, respectively. In-situ WAXS was used to observe the effect of applied voltage on lattice strains in different lattice orientations. Crystallographic studies on the composite nanofibers revealed co-crystallization, which led to higher piezoelectric voltages in the composite nanofibers.
Article
Materials Science, Multidisciplinary
Xun Jiang, Ru Guo, Huan Wang, Zhe Gao, Hang Luo, Lihong Liu, Dou Zhang
Summary: In the field of energy storage, PVDF-based polymers have gained increasing attention due to their high breakdown strength, flexibility, processability, and low cost. This study demonstrates that the performance of P(VDF-TrFE-CTFE) can be significantly improved using a facile drawing strategy, leading to enhanced breakdown strength and energy storage density.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Nicolas Maria, Florian Le Goupil, Dario Cavallo, Jon Maiz, Alejandro J. Muller
Summary: This contribution investigates the effect of trifluoro ethylene (TrFE) comonomer content on the crystallization and ferroelectric properties of PVDF copolymers. The results show that TrFE inclusion limits the overall crystallization and increases self-nucleation capacity in the copolymers. The maximum and remnant polarization increase with increasing TrFE content up to 25%, after which they start to decrease.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Characterization & Testing
Sara Zanchi, Marie Engel, Antoine Pascaud, Francois Bargain, Sylvie Lebreton, Fabrice Domingues dos Santos, Sebastien Roland, Sylvie Tence-Girault
Summary: In this article, the authors explained the diverse morphologies observed in P(VDF-ter-TrFE-ter-CTFE) terpolymers after annealing or crystallization from the melt using a combination of AFM and SAXS experiments. They found that the evolution of SAXS spectra after annealing was due to the formation of semi-crystalline domains without significant changes in the crystalline lamellar period. The coexistence of two periodic stacks was also observed after crystallization from the melt, with different cooling rates and CTFE amounts resulting in different domain orientations and sizes.
Article
Polymer Science
Francois Bargain, Damien Thuau, Georges Hadziioannou, Fabrice Domingues Dos Santos, Sylvie Tence-Girault
Summary: Poly(VDF-ter-TrFE-ter-CTFE) copolymers exhibit ferroelectric or relaxor ferroelectric properties depending on their CTFE content, with their solvent cast films crystallizing into three orthorhombic phases. The electric displacement-electric field (D-E) loop, remnant polarization (P-R), and macroscopic properties of the terpolymers show close correlations with the amount of CTFE and annealing steps. Additionally, a temperature versus mol% CTFE phase diagram is established and discussed in relation to material properties.
Article
Chemistry, Physical
Pengshan Xie, Yulong Huang, Wei Wang, You Meng, Zhengxun Lai, Fei Wang, SenPo Yip, Xiuming Bu, Weijun Wang, Dengji Li, Jia Sun, Johnny C. Ho
Summary: The research presents InGaAs nanowire artificial synapses wrapped in poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)), capable of operating with record-low subfemtojoule power consumption. By adjusting the thickness of top P(VDF-TrFE) films, essential synaptic behaviors are effectively mimicked and modulated, while long-term depression is realized through visible light application. Combined with optimal P(VDF-TrFE) films, the synaptic devices exhibit more linear characteristics and faster learning processes, demonstrating potential advantages for neuromorphic computing systems.
Article
Polymer Science
Pedro M. Resende, Jean-David Isasa, Georges Hadziioannou, Guillaume Fleury
Summary: This study presents a facile and noninvasive approach to evaluate the relative ratio of defects in TrFE segments through a detailed analysis of polymer Raman spectra. By varying the content of TrFE in P-(VDF-TrFE) samples, the contribution of TrFE unit modes can be determined and validated through other analysis techniques. Based on the findings, a defect quantification ratio is proposed to predict chain conformation and electroactive behavior.
Article
Energy & Fuels
Jiaheng Nie, Yaming Zhang, Minjiang Dan, Jizheng Wang, Lijie Li, Yan Zhang
Summary: Perovskite solar cells are being studied as a candidate for next-generation solar devices due to their rapid increased power conversion efficiency. Introducing internal polarization by doping P(VDF-TrFE) into perovskite can effectively improve the key characteristics of the solar cell. Experimental results show that this simple polarization method has effectively improved the PCE up to 22.1%.
Article
Chemistry, Physical
Xun Jiang, Hang Luo, Fan Wang, Xiaona Li, Haoran Xie, Yuan Liu, Guoqiang Zou, Xiaobo Ji, Hongshuai Hou, Dou Zhang
Summary: This study aims to improve the low breakdown strength and premature saturation of polarization of P(VDF-TrFE-CTFE) polymer by adding carbon quantum dots (CQDs). The nanocomposite with 0.1 wt% CQDs showed significantly improved breakdown strength and discharge energy density. The research demonstrates the effective enhancement of breakdown strength and energy density by ultralow loading of CQDs for P(VDF-TrFE-CTFE) polymer.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Jiang Yang, Fan Xu, Hanxiao Jiang, Conghuan Wang, Xingjia Li, Xiuli Zhang, Guodong Zhu
Summary: This study reported the enhancement of piezoelectric properties induced by AlN doping, successfully applied in the design of flexible piezoelectric sensors on electrospun polymer nanofiber membranes. This method provides a convenient measure for fabricating high-electroactivity nanocomposite membranes for sensing applications in wearable and flexible electronics.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Polymer Science
Lavanya Muthusamy, Balaadithya Uppalapati, Samee Azad, Manav Bava, Goutam Koley
Summary: Self-polarized energy harvesting materials have gained attention for their simple fabrication method and versatile application potential. In this study, P(VDF-TrFE)/carbon black (CB) composite thin films were investigated, with the increase of CB content resulting in enhanced crystallinity, dipolar orientation, and piezoelectric performance. The surface roughness of the films increased with higher CB content, leading to increasing piezoelectric voltage. However, the maximum value was reached at 0.6 wt.%, after which the sample had low resistance.
Article
Materials Science, Multidisciplinary
Geunryeol Baek, Su Chul Yang
Summary: In this study, polymer composites of P(VDF-TrFE)/p-Ni were developed for electrostatic air filters, which showed high PM filtration efficiency with low pressure. The surface charge in the composites was enhanced by optimizing the dip-coating solutions, and the interfacial strain propagation between P(VDF-TrFE) and porous-Ni was investigated. The ME-based composites exhibited potential for practical PM2.5 removal.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Xinping Hu, Yaping Che, Zijie Zhang, Qun-Dong Shen, Baojin Chu
Summary: Multifunctional materials were achieved by designing composites of P(VDF-TrFE) ferroelectric polymer and BiFeO3-BaTiO3 nanofibers, combining the properties of the polymer and nanofibers to improve dielectric, piezoelectric, and pyroelectric properties, as well as to create multiple functionalities such as ferromagnetism, magnetoelectric effect, photothermal effect, photostriction, and photo-electric response. The composite materials can detect mechanical, magnetic, and optical signals and generate actuation by electrical and optical stimuli.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Applied
Xing Fan, Mengdi Sun, Zhong Li, Zhenhua Chen, Xiaoyong Zhou, Quanxuan Lu, Zhicheng Zhang
Summary: With the increasing attention in the biomedical field and intelligent wearable devices, flexible piezoelectric materials, such as polyvinylidene fluoride (PVDF)-based polymers, have shown a broad potential in the field of sensors. However, the existing materials are expensive and difficult to process, hindering their commercial application. This study focuses on the poly(vinylidene fluoride-tetrafluoroethylene) (P(VDF-TFE), F24) copolymers due to their low cost and great potential in the piezoelectric field. The researchers systematically investigated the structure and dielectric properties of P(VDF-TFE) copolymers with different TFE contents, and explored the effect of thermal annealing on their piezoelectric performances. The results showed that the sample F24-20A130 exhibited the best piezoelectric properties, with a piezoelectric stress constant (d33) of -20 pC/N. This sample also demonstrated excellent response sensitivity in sensing tests, making it a promising material for flexible sensor applications in healthcare and wearable devices.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Engineering, Manufacturing
Jian Wang, Sen Liang, Jie Xiong, Biyun Peng, Lijun He, Yunchuan Xie, Zhicheng Zhang
Summary: This study successfully enhances the energy storage properties of polymer nanocomposites through surface modification and structure modulation. By utilizing self-assembly phase-transitioned lysozyme (PTL) modification and layered gradient structure design, interface defects can be weakened and charge injection can be reduced simultaneously, resulting in a higher energy density.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Computer Science, Information Systems
Qisheng Wang, Zhicheng Zhang, Kean Chen, Ji Guan, Wang Fang, Junyi Liu, Mingsheng Ying
Summary: Computing the fidelity between two unknown mixed quantum states rho and sigma in an N-dimensional Hilbert space is a fundamental problem in quantum computing and quantum information. This paper proposes a quantum algorithm that can solve this problem in ${\mathrm{ poly}}(\log (N), r, 1/\varepsilon) time, where r is the lower rank of rho and sigma, and $\varepsilon$ is the desired precision, assuming the purified versions of rho and sigma are prepared by quantum oracles. This algorithm demonstrates an exponential speedup compared to the best known algorithm based on quantum state tomography, which has polynomial time complexity in N.
IEEE TRANSACTIONS ON INFORMATION THEORY
(2023)
Article
Materials Science, Multidisciplinary
Yong Lu, Qizheng Li, Zhicheng Zhang, Xiao Hu
Summary: In this study, two magnolol-based polymers were designed and synthesized for high-performance polymer dielectrics. The polymers showed excellent thermal, mechanical, and dielectric properties, making them promising materials for energy storage.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Ying Zhang, Wenxiang Zhang, Honghong Gong, Qinxiang Jia, Wen Zhang, Zhicheng Zhang
Summary: This study discovers the advantages of porous TpBDSA-Na COF as sensing material for humidity sensors, including fast response speed, small hysteresis, and long-term stability. This indicates that 2D COF with a hydrophilic channel can be a promising material for humidity sensing.
Article
Engineering, Environmental
Xinyi Li, Yunchuan Xie, Jie Xiong, Dajiang Long, Jin Zhang, Bofeng Zhu, Xiao Zhang, Xinhua Duan, Zhenxue Liu, Zhicheng Zhang, Xingyi Huang
Summary: High-temperature film capacitors with polymer film dielectrics face challenges of large leakage currents, leading to low energy density and charge-discharge efficiency. A structural-tailoring strategy is proposed to overcome this issue by synthesizing a novel functional monomer containing benzimidazole and pyridine groups (BBP) and preparing cross-linked c-P(AEK-BBP) dielectric films. The introduction of BBP units and the cross-linked network significantly suppress the leakage current, resulting in improved energy density of 7.3 J·cm-3 under 600 MV·m-1 and 150 degrees C, outperforming current heat-resistant dielectric polymers.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Applied
Honghong Gong, Ying Zhang, Yipin Cheng, Qinglong Ji, Mengdi Sun, Shaobo Tan, Zicai Zhu, Zhicheng Zhang
Summary: Actuators based on smart materials can produce mechanical deformation in response to external stimulation, and are widely used in bionic robots, wearable devices, and biomedical devices. Most current actuators can only generate a single deformation function, but it is expected that through the integration of visualization technology, the actuators will have broader application prospects. Recent studies have shown that the integration of deformation and visualization technology can greatly contribute to the further development of deformation technology. However, there is a relative lack of systematic review on the integration of deformation and visualization technology in current literature on smart actuators.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Physical
Yijin He, Bofeng Zhu, Shaobo Tan, Zhenxue Liu, Xiao Zhang, Zhicheng Zhang
Summary: This study investigates the dielectric and energy storage properties of chlorinated poly(vinyl chloride) (CPVC) and finds that high-temperature annealing can improve the energy storage properties of CPVC, achieving high energy density and discharge efficiency. The results show that heat-treated CPVC has low dielectric loss and high breakdown strength, making it suitable for high-pulse metallized film capacitors.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jie Chen, Zhantao Pei, Yijie Liu, Kunming Shi, Yingke Zhu, Zhicheng Zhang, Pingkai Jiang, Xingyi Huang
Summary: Researchers have developed an aromatic-free polymer with good electrical insulation and low conductivity at high temperatures and high electric fields. By using density functional theory calculations and semiconductor doping, the polymer achieves high discharge density and charge-discharge efficiency at elevated temperatures, while demonstrating excellent breakdown self-healing capability, making it suitable for continuous operation under extreme conditions.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Yipin Cheng, Qinglong Ji, Bofeng Zhu, Xiao Zhang, Honghong Gong, Zhicheng Zhang
Summary: Researchers have developed a new polymer dielectric with higher energy density and lower energy loss by introducing fluorine atoms and manipulating electron distribution. Experimental results show that this polymer exhibits higher discharge efficiency and energy density compared to existing polymer dielectrics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Physics, Applied
Zhuting Hao, Danhong Yang, Zhicheng Zhang, Qin-Xiang Jia, Wen Zhang
Summary: Researchers have studied MOF/polymer composite dielectrics to improve compatibility and energy storage density. However, the composition-structure-property relationships are still unclear. This paper investigates formic acid MOF/polylactic acid composites and explores their influence on dielectric properties. The results show that different MOFs and metal ions have different effects on the composites.
JOURNAL OF ADVANCED DIELECTRICS
(2023)
Article
Chemistry, Multidisciplinary
Meirong Zhang, Bofeng Zhu, Xiao Zhang, Zhenxue Liu, Xiaoyong Wei, Zhicheng Zhang
Summary: Polymer-based dielectrics, such as biaxially oriented polypropylene (BOPP), have limitations in achieving high energy density due to low permittivity. To address this issue, electron-deficient vinyl quinoline (VQQ) units were copolymerized with methyl methacrylate (MMA) and blended with a PMMA matrix. This strategy successfully increased energy discharging efficiency and obtained a higher energy density. This work provides a promising approach for commercial application of high energy density and low loss polar polymer dielectrics in energy storage capacitors.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Xinyi Li, Yunchuan Xie, Jie Xiong, Bofeng Zhu, Xiao Zhang, Xinhua Duan, Bo Dong, Zhicheng Zhang
Summary: This study introduces BN nanoparticles coated with ABA voltage stabilizer into a copolymer, improving the dispersion of BN particles and reducing energy loss induced by electric field distortion. The optimized composite film exhibits high energy density and efficiency at high temperatures.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Jie Xiong, Xing Fan, Dajiang Long, Bofeng Zhu, Xiao Zhang, Junyong Lu, Yunchuan Xie, Zhicheng Zhang
Summary: This study proposes a strategy for fabricating polymeric films with excellent high-temperature capacitive performance by coating the surface of BOPP films with parylene polymers. The addition of a parylene polymer layer significantly improves the temperature resistance of BOPP and effectively suppresses leakage current, resulting in excellent capacitive properties at elevated temperatures and high electric fields.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Review
Chemistry, Physical
Yunchuan Xie, Xing Fan, Xinyi Li, Ying Zhang, Zhicheng Zhang, Xingyi Huang
Summary: Polymer nanodielectrics have great potential as high-voltage film capacitor materials, but their application has been hindered by interface engineering issues. Recent research highlights the critical role of interface engineering in regulating polarization and breakdown behaviors. This article summarizes the latest advances in interface engineering of polymer nanodielectrics and discusses the challenges and opportunities from a practical perspective.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
