Article
Chemistry, Multidisciplinary
Jie Wang, Ying Li, Liang Shao, Yang Bai, Zhonglei Ma, Jianzhong Ma
Summary: The study successfully prepared a PVA/PA/NP-PPy composite conductive hydrogel with excellent conductivity and sensing properties, demonstrating good self-recovery ability and high conductivity. It can be utilized for monitoring subtle movements of the human body.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2021)
Article
Biochemistry & Molecular Biology
Jianzhen Wu, Xiuzhicheng Wu, Fujian Yang, Xiaonan Liu, Fanjun Meng, Qinglin Ma, Yuju Che
Summary: Building multiple chemical crosslinks is an effective strategy to improve the mechanical properties and diversify the final application of polysaccharide nanoparticles reinforced poly(vinyl alcohol) physical hydrogels.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biotechnology & Applied Microbiology
Qianjun Long, Yunxia Zhang, Qiang Zhang, Kaibo Xu, Liqin Cao, Li Zhang
Summary: The design of multifunctional hydrogel sensor materials with comprehensive properties is discussed. A conductive, semi-interpenetrating network hydrogel was constructed using poly (vinyl alcohol), polyaniline (PANI), and poly (dimethyl diallyl ammonium chloride) (PDDA), with the assistance of the Hofmeister effect. The hydrogel exhibited excellent conductivity, mechanical strength, and sensitivity as a strain sensor material, along with temperature sensitivity, frost resistance, self-healing capability, and reusability.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yuhang Tang, Shunyu Chen, Xiufeng Xiao
Summary: With the rapid development of soft electronics, the demand for hydrogel materials as conductive materials with high flexibility, adjustable mechanical strength, and wide range of applications has grown rapidly. However, conventional hydrogels are not very tough and mechanically strong, and do not adapt well to the environment. In this study, an ion-conductive double-network hydrogel was designed and synthesized, with excellent flexibility, good conductivity, and stable responsiveness under various strain and cycling tests. It shows great potential as a strain sensor and writing recognition material in complex scenarios.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shihao Peng, Yuhao Zhao, Chunyong Liang, Hongshui Wang, Huan Zhou, Lei Yang
Summary: Conductive hydrogels, such as gluten-based hydrogels, have shown great potential in fields like artificial intelligence and health monitoring. However, the low resilience and poor structure stability of gluten-based hydrogels have been a challenge. To address this, researchers introduced poly(vinyl alcohol) (PVA), glycerol, and different ions into the gluten hydrogel, resulting in a highly stretchable and water-resistant material with improved mechanical and conductive properties. This new material paved the way for the development of flexible strain sensors for body motion monitoring and underwater activity monitoring. It also demonstrated the potential of gluten in flexible sensing applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Alessandro Angelini, Anja Car, Ionel Adrian Dinu, Luigi Leva, Wilfredo Yave
Summary: Tailor-made poly(vinyl alcohol)-b-poly(styrene) copolymers (PVA-b-PS) for separation membranes are synthesized using reversible-deactivation radical polymerization techniques. These di-block copolymers have high molecular weight (>70 kDa), high PVA content (>80 wt%), and good film-forming property. They self-assemble in aqueous media to form micelles, which when cast on a porous substrate, result in thin-film membranes with higher water permeance than that of PVA homopolymer. The PS nanodomains within the PVA matrix act as cross-linking points, eliminating the need for chemical cross-linkers and acid catalysts. Thermal annealing further enhances membrane selectivity through improved microphase separation.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Yifan Zheng, Hong Huang, Yan Wang, Jing Zhu, Junrong Yu, Zuming Hu
Summary: This study presents a facile and low-cost design strategy for a transparent, gradient cross-linked, patternable and reprogrammable humidity-responsive actuator based on PVA. The actuator is capable of humidity-responsive ability, gradient cross-linking, and photo-controlled reversible cross-linking. It demonstrates fast actuation speed, large actuation amplitude, and complex shape deformation control.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
Zhi-Zheng Yang, Zhi-Lan Zhou, Cheng-Wen Li, Pin-Kui Ma, Cheng Wang, Hui-Yuan Wang
Summary: An annealed PPy/PVA film was successfully applied to the surface of ZnCo2O4 nanorods, significantly improving the electrochemical performance of the nanocomposites. The inclusion of PVA played a crucial role in inhibiting aggregation, ensuring firm adhesion, and suppressing volume expansion during cycling, leading to a high reversible capacity of 1020 mA h g(-1) for 300 cycles at a current density of 500 mA g(-1). Overall, the study proposes PPy/PVA composites as a promising strategy to enhance the stability and rate performance of ZnCo2O4 for lithium-ion batteries.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Sanjib Sau, Subhankar Pandit, Sarathi Kundu
Summary: In this study, a simple heat treatment method is used to modify the crystallinity and mechanical properties of PVA films, resulting in potential applications in industries such as textiles and food packaging. By heating the films at different temperatures and time intervals, improvements in their properties such as crystallinity and mechanical strength were observed, paving the way for enhanced performance in various applications.
SURFACES AND INTERFACES
(2021)
Article
Polymer Science
Seong Baek Yang, Mohammad Rezaul Karim, Jungeon Lee, Jeong Hyun Yeum, Sabina Yeasmin
Summary: Novel poly(vinyl alcohol)/poly(vinyl butyral-vinyl alcohol) films with improved hydrophobicity were prepared by saponification of poly(vinyl acetate)/poly(vinyl butyral) blend films. The saponification process was confirmed by various analysis techniques. The hydrophobicity of the films increased with increasing poly(vinyl butyral) content. The saponified films exhibited improved mechanical properties and unique surface characteristics. These films have potential applications in biomaterials, filters, and medical devices.
Article
Engineering, Electrical & Electronic
Monalisa Halder, Shubhadip Atta, Ranjita Sinha, Ajit Kumar Meikap
Summary: Investigation on charge transport mechanism in manganese ferrite loaded polyvinyl alcohol nanocomposite film reveals enhanced conductivity, higher dielectric constant, and low tangent loss. The current voltage characteristics can be explained using the thermionic emission and Schottky emission models, with presence of oxygen-related defect states in the polymeric system.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Polymer Science
Minjie Pei, Xiaotong Peng, Tingting Wan, Penghui Fan, Hongjun Yang, Xin Liu, Weilin Xu, Yingshan Zhou, Pu Xiao
Summary: The research synthesized PVA hydrogels with excellent performance, and significantly improved their tensile and compression strength through double-crosslinking. The hydrogel with the optimum composition can withstand a weight about 2220 times of its own weight, and exhibits good cytocompatibility.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Ana V. Torres-Figueroa, Sergio de los Santos-Villalobos, Dora E. Rodriguez-Felix, Sergio F. Moreno-Salazar, Cinthia J. Perez-Martinez, Lerma H. Chan-Chan, Andres Ochoa-Meza, Teresa del Castillo-Castro
Summary: The preparation method of hydrogels has a significant impact on their properties. In this study, PVA/HA hydrogels were prepared using autoclaving and glutaraldehyde addition methods. The autoclaved hydrogels exhibited better microstructure, swelling levels, and water retention capacity, while the glutaraldehyde-cross-linked hydrogels promoted plant growth. The release behavior of urea was also influenced by the preparation method.
Article
Materials Science, Multidisciplinary
Jiake Wang, Boxiang Zhan, Shangzhong Zhang, Yan Wang, Lifeng Yan
Summary: This study prepared eutectogels using deep eutectic solvents (DESs) as the solvent and improved their properties by introducing lignin and glycerol. The prepared gels exhibited high strength, high conductivity, and excellent frost resistance, and showed potential in flexible sensing.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Xiaodong Xu, Lujuan Li, Seyed Mohsen Seraji, Lei Liu, Zhen Jiang, Zhiguang Xu, Xin Li, Sheng Zhao, Hao Wang, Pingan Song
Summary: The addition of inositol molecules as cross-linkers can increase the strength and toughness of nanostructured PVA composites, with a correlation between H-bond cross-linking density and mechanical properties. Dynamic physical cross-linking and crystalline grain refinement contribute to the enhanced performance of the materials.
Article
Chemistry, Multidisciplinary
Jie Dou, Qi Chen
Summary: Ternary metal oxide semiconductor Zn2SnO4 has garnered global attention for its unique optoelectronic properties. This classic ternary oxide material shows high electron mobility, wide band gap, and tailored electronic band structures, making it ideal for practical applications in various devices. Recent research has focused on synthesis methods, nanostructures, and their effects on crystal structure and properties, highlighting potential applications in solar cells, lithium batteries, sensors, and photo-catalysts.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Physics, Applied
Guilin Liu, Ning Zhou, Shunquan Tan, Juchen Zhang, Qi Chen, Huanping Zhou
Summary: Perovskite solar cells (PSCs) have rapidly developed with high efficiency and low cost, but issues such as J-V hysteresis have limited further progress. This study investigated the hysteresis mechanism in both 3D and Q-2D PSCs, finding that capacitance and ion migration play different roles in causing J-V hysteresis. Conducting further research in this area could help improve device performance and stability in the long run.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Mechanics
Chun Ran, Qiang Zhou, Pengwan Chen, Qi Chen, Wangfeng Zhang
Summary: Titanium and titanium alloys are prone to adiabatic shear failure at high strain rates due to their low coefficients of specific heat and thermal conductivity. The mechanical behavior of titanium alloys is sensitive to strain rate and test temperature, and there are differences in adiabatic shear susceptibility among different titanium alloys. Higher strain-hardening coefficient and strength do not necessarily correspond to high sensitivity to adiabatic shear failure.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Review
Chemistry, Multidisciplinary
Yizhou Zhao, Lanning Wang, Tinglu Song, Alexander Mudryi, Yujing Li, Qi Chen
Summary: This review discusses the specific design principles of halide perovskite-based photocatalytic systems from various perspectives, including photoelectrocatalytic device structures, heterogeneous photocatalytic systems, and applications in environmental and organic synthesis. It also suggests prospective research directions for the future development of these systems.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ning Zhou, Yu Zhang, Zijian Huang, Zhenyu Guo, Cheng Zhu, Jingying He, Qi Chen, Wentao Sun, Huanping Zhou
Summary: Researchers have successfully fabricated highly oriented 2D/3D hybrid perovskite films and achieved efficient solar cells by using bulky organic cations. These findings provide new insights for the selection of bulky cations and further exploration of more functional organic cations.
Article
Chemistry, Physical
Min Zhang, Wei Zhao, Deyu Xin, Lin Lei, Jidong Long, Yiying Zhao, Jianguo Zhu, Xiaojia Zheng, Qi Chen, Wen-Hua Zhang
Summary: The study presented a method for fabricating polycrystalline MAPbI(3) films using solvent-free liquid perovskite molten-salt (PMS), offering reduced toxicity, scalable fabrication, and tunability in film thickness. The use of nylon membrane as a scaffold for the infiltration of PMS resulted in MAPbI(3)-LLP detectors with enhanced material properties, showing good stability and high performance in X-ray and single gammaray photon detection, which could accelerate the adoption of polycrystalline perovskites in X-ray imaging and gamma-ray detection.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Sai Ma, Guizhou Yuan, Ying Zhang, Ning Yang, Yujing Li, Qi Chen
Summary: Despite significant progress in the efficiency of perovskite solar cells, their commercialization has been hindered by the lack of stability. Encapsulation is crucial in providing protection against outdoor aging stressors and improving device stability.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Physics, Applied
Wenfu Zhu, Wei Zhao, Jiaqian Kang, Pengxiang Zhang, Yun Li, Qi Chen, Zishuo Yao, Zhongbin Pan, Yingtao Zhao, Jiawang Hong, Xueyun Wang
Summary: Polymer dielectric films are widely used in electronic and power systems due to their unique properties. This study improves the energy storage performance of composites by using high-aspect-ratio fibers as fillers.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Lina Wang, Huachao Zai, Ye Duan, Guilin Liu, Xiuxiu Niu, Yue Ma, Boyan Li, Yuchao Sun, Huanping Zhou, Qi Chen
ACS ENERGY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Wanhui Shi, Ziwei Wang, Hua Song, Yunzhen Chang, Wenjing Hou, Yanping Li, Gaoyi Han
Summary: This study successfully prepared flexible hydrogel fiber sensors with excellent resistance to extreme environments by adding glycerin to the mixture of poly(vinyl alcohol) and poly 3,4-dioxyethylene thiophene:polystyrene sulfonic acid. The sensors exhibit outstanding flexibility and mechanical strength, and can operate in low temperature and large deformation environments while detecting small strains. The results demonstrate great application prospects of these sensors in physiological monitoring.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Jie Dou, Qi Chen
Summary: Metal-organic framework (MOF) materials have attracted significant attention in solar cell research due to their unique properties and various preparation methods. Utilizing MOFs can enhance the performance and stability of solar cells, including dye-sensitized, perovskite, and organic solar cells. This mini-review summarizes recent achievements in utilizing MOFs in solar cells and aims to enhance the understanding of material properties and expand future material applications.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Qi Chen, Yang Bai, Qizhen Song
Summary: This article introduces the application of Bayesian Optimization algorithm in the field of perovskite solar cells. Perovskite solar cells have made significant progress due to their unique optoelectronic properties. However, they still face some challenges in practical applications. The Bayesian Optimization algorithm can accelerate the development of processing chemistry and has great potential for solving problems in the field of perovskite solar cells.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Zhenhua Cui, Qingshan Zhang, Yang Bai, Qi Chen
Summary: Perovskite solar cells have gained significant attention for their rapid efficiency increase and convenient preparation. Among them, wide bandgap perovskites have advantages in tandem solar cell development and are the most promising candidate for commercialization. However, stability issues significantly hinder the further development of wide bandgap perovskites. Due to their ionic nature, wide bandgap perovskites experience severe photo-induced segregation and degradation under illumination. Therefore, we summarize the reasons for the instability of wide bandgap perovskites and discuss strategies for stability improvement. Finally, we provide prospects for the future development of wide bandgap perovskites.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Xueyuan Wei, Pengxiang Zhang, Tailai Xu, Huanping Zhou, Yang Bai, Qi Chen
Summary: This review summarizes the development and application of electronic doping technology, focusing on the use of chemical approaches in electronic doping. New classifications and models based on the properties of dopants are proposed, which inspire further development in the field of optoelectronics.
CHEMICAL SOCIETY REVIEWS
(2022)
Review
Chemistry, Multidisciplinary
Jing Dou, Yang Bai, Qi Chen
Summary: Solar energy is a promising energy source to meet global energy demands. Perovskite solar cells have made significant progress in efficiency and lifespan. Despite the high efficiency and stability of lead-halide perovskite materials, the toxicity of lead limits their commercial application.
MATERIALS CHEMISTRY FRONTIERS
(2022)
