Article
Engineering, Electrical & Electronic
S. Pal, S. Bhowmick, S. A. Khan, A. Claverie, D. Kanjilal, A. K. Bakshi, A. Kanjilal
Summary: The study reveals that annealing gradually forms nanocrystals in alumina films and self-patterned wrinkles on the surface. Optical defect analysis shows a monotonic increase of oxygen vacancies with annealing temperature, but this is not directly correlated with thermoluminescence results after gamma radiation exposure. Annealing temperature affects TL response curves, with the 1200 degrees C annealed alumina film showing superior results. Linear TL response curves in the 1200 degrees C annealed film are demonstrated after exposure to different radiation sources.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Biochemistry & Molecular Biology
Yiwen Hua, Chao Liu, Yanjun Tang
Summary: The development of sustainable high-performance materials based on nanocellulose has received great attention. In this study, nanocellulose-based composite films with highly conductive and antibacterial properties were developed by adding reduced graphene oxide (rGO)/silver nanoparticles (AgNPs) to cellulose nanofiber films through a vacuum filtration process. The reduction effect of gallic acid on the chemical structure and electrical conductivity of the composites was investigated. The prepared composite film with a specific ratio of rGO/AgNPs to cellulose nanofibers showed superior tensile strength and electrical conductivity, as well as strong antibacterial effects against Escherichia coli and Staphylococcus aureus.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Nanoscience & Nanotechnology
Florian Malotke, Tobias Thiele, Jochen S. Gutmann, Michael Giese
Summary: A modular tool box for photoresponsive cholesteric liquid crystals based on hydrogen-bonded assemblies is developed, allowing tunable structural coloration. The blue shift in cholesteric liquid-crystalline thin films is attributed to the photoinduced destruction of smectic clusters, resulting in a contraction of the helical structure. Furthermore, the use of a stereolithography 3D printer enables the direct transfer of digital information into a multicolor photonic pattern.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yunling Wu, Xinnan Mao, Mochun Zhang, Xuan Zhao, Renjie Xue, Sijia Di, Wei Huang, Lu Wang, Youyong Li, Yanguang Li
Summary: Research has shown that designing and introducing multisite hydrogen bonding within HOFs can overcome the issue of weak hydrogen bonds dissociating, resulting in excellent electrochemical performance of the prepared 2D molecular sheets with long cycle life. Theoretical simulations indicate that the activation barrier for Na+ ion diffusion within the organic frameworks is low, contributing to the exceptional electrochemical performance.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Applied
Yilun Weng, Supun Ranaweera, Da Zou, Anna P. Cameron, Xiaojing Chen, Hao Song, Chun-Xia Zhao
Summary: Enzymes are essential for industries, but their sensitivity to high temperatures can be problematic. Encapsulation with alginate microparticles has been shown to improve enzyme thermal stability, but other factors like enzyme loading and bioavailability also need to be considered. This study optimized the efficiency of enzyme encapsulation and achieved high enzyme loading and thermal stability, with excellent bioavailability demonstrated in an animal trial.
FOOD HYDROCOLLOIDS
(2023)
Article
Materials Science, Multidisciplinary
Yu Yan, Matthew Feeney, Luke M. Davis, Samuel W. Thomas
Summary: A simple approach to cross-link free-standing hydrogen-bonded LbL films was reported in this paper, in which the stiffness of the films increased by three orders of magnitude upon cross-linking with Fe3+. The mechanical properties of these films can also be tuned using light by the photoinduced reduction of coordinated iron(III) ions.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Analytical
Alexey Skvortsov, Ekaterina Babich, Alexey Redkov, Andrey Lipovskii, Valentina Zhurikhina
Summary: The study revealed the good stability of silver nanoisland films in various biocompatible buffers, with the best performance in PBS, making them promising for biosensor applications. Additionally, it was observed for the first time that silver nanoparticles formed in the solution dissolved after exposure to PBS, while nanoislands on the glass surface remained unchanged.
Article
Chemistry, Physical
Zhijiang Guo, Xiaoli Li, Ning Li, Xuanji Liu, Haojie Li, Xuezhi Li, Yuxuan Wang, Jianguo Liang, Zhanchun Chen
Summary: This study presents a method of directional arrangement of silver nanowires (AgNWs) to prepare conductive films by using shear force generated during the Mayer rod coating process. The prepared multilayer crossed three-dimensional (3D) AgNW conductive network exhibits excellent electrical and optical properties, as well as low surface roughness, excellent bending resistance, and environmental stability. This adjustable coating method is simple and scalable, which is important for the future development of flexible transparent conductive films.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Diederik Depla
Summary: The chemical stability of silver films with a thickness below 50 nanometer deposited on glass using DC magnetron sputtering was investigated. The films were exposed to a droplet of a HCl solution in a humid atmosphere and the affected area was monitored. It was found that the affected area increased linearly with time, indicating a diffusive mechanism. The diffusivity was measured as a function of the acid concentration, the presence of an aluminum seed layer, and film thickness, showing a linear correlation with acid concentration and a more complex behavior with film thickness.
Article
Chemistry, Multidisciplinary
Yumeng Xu, Xing Guo, Zhenhua Lin, Qingrui Wang, Jie Su, Jincheng Zhang, Yue Hao, Keke Yang, Jingjing Chang
Summary: By designing a multifunctional elastomer with abundant hydrogen bonds and carbonyl groups, the chemical bonding between polymer and perovskite has been enhanced, leading to the preferential growth of high-quality perovskite film. The hydrogen-bonded polymer network improves air stability, flexibility, and reduces lead release, paving the way for industrialization of high-performance flexible perovskite solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Zu-Jin Lin, Jin-Ying Qin, Xiao-Ping Zhan, KeChen Wu, Gao-Juan Cao, Banglin Chen
Summary: A novel stable mesoporous HOF with a high density of hydroxy moieties (HOF-FAFU-1) was designed and synthesized, which could be used as a fluorescent sensor for hypochlorite detection in water media.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Yongjing Hu, Zhishuang Deng, Zhiwei Fan, Zhukang Du, Yinshu Su, Wen Tang, Tao Lin Sun, Zi-Hao Guo, Kan Yue
Summary: A kind of transparent, hydrogen-bonded polymer complex elastomers with good mechanical strength and rapid self-healing capability was fabricated by in situ photoinitiated random copolymerization. These elastomers, after evaporating water molecules, formed dynamic hydrogen bonds that endowed them with excellent performance, including high mechanical strength and stretchability up to 24 times their initial length. The introduction of A6ACA as a comonomer significantly improved self-healing efficiency even under ambient conditions, showing promise for various applications.
Article
Chemistry, Multidisciplinary
Qi Yin, Eugeny Alexandrov, Duan-Hui Si, Qian-Qian Huang, Zhi-Bin Fang, Yuan Zhang, An-An Zhang, Wei-Kang Qin, Yu-Lin Li, Tian-Fu Liu, Davide M. Proserpio
Summary: This study successfully prepared a series of metalloporphyrinic hydrogen-bonded organic frameworks (HOFs) with high surface area and excellent stability by introducing a transition metal which caused noticeable changes on noncovalent interaction, orbital overlap, and molecular geometry. These metalloporphyrinic HOFs were then used as photocatalysts for the photoreduction of CO2 to CO.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
An-An Zhang, Yu-Lin Li, Zhi-Bin Fang, Lei Xie, Rong Cao, Yangyang Liu, Tian-Fu Liu
Summary: This study presents a new strategy to design efficient photocatalysts for CO2 reduction by integrating Cu2O and a porphyrin hydrogen-bonded organic framework (PFC-45) into a heterogeneous structure. The thin-film catalyst (PFC-45/Cu2O@CP) prepared using electrophoretic deposition technology showed significantly improved CO2-to-CO photoreduction with enhanced electron-hole separation efficiency and visible-light-harvesting ability. It exhibited high selectivity and outstanding activity for photocatalytic CO2 reduction in pure water without any sacrificial agent.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
S. B. Eadi, Jae Sub Oh, Chaehwan Kim, Gapseop Sim, Kwanghee Kim, Hee Yeoun Kim, Jae Jeong Kim, Hyeong Rok Do, Sung-il Chu, Seng Hwan Jung, H. D. Lee
Summary: This study investigated the hydrogen detection ability of palladium-nickel alloy films with different nickel concentrations. Pd-Ni alloy sensors were fabricated using the co-sputtering method. The experimental results showed that the response of the Pd-Ni alloy sensor decreased linearly with an increase in the nickel concentration up to 8%. The resistance of the Pd-Ni alloy was reversible upon exposure to hydrogen gas, exhibiting absorption and desorption characteristics. The Pd-Ni alloy sensor exhibited a faster response time of 11 s compared to pure Pd, and demonstrated great selectivity and stability over a period of 90 days.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Ying Luo, Lei Cui, Lei Zou, Yiping Zhao, Li Chen, Ying Guan, Yongjun Zhang
Summary: Physical hydrogels of pure chitosan with improved mechanical properties and solubility have been developed, which can enhance wound healing and reduce scar formation.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Applied
Zhengbo Lu, Lei Zou, Xiaoman Zhou, Di Huang, Yongjun Zhang
Summary: This study systematically investigated the effects of treatment parameters in a two-step basic route for chitosan hydrogel preparation. The thermal gelation was found to be the crucial step determining the structure and properties of the final gel.
CARBOHYDRATE POLYMERS
(2022)
Article
Multidisciplinary Sciences
Yan Zhang, Yafei Wang, Ying Guan, Yongjun Zhang
Summary: The authors report on a peptide-enhanced eutectogel with excellent mechanical, anti-freezing, and anti-drying properties, and its application as a sensor for monitoring human motion.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Biomaterials
Qiujing Dong, Mengmeng Yang, Yafei Wang, Ying Guan, Wangqing Zhang, Yongjun Zhang
Summary: Low-cost and highly effective methods are sought after to replace costly ethanol fractionation and affinity chromatography in IgG isolation from human plasma. Molecularly imprinted polymers (MIPs) have potential but face difficulties in template removal and imprinting efficiency. A new strategy using poly(l-glutamic acid) (PLGA) peptide crosslinkers was adopted to overcome these challenges. The optimized MIP achieved high adsorption capacity (612.5 mg g(-1)), high IF (4.92), and high selectivity, enabling effective separation of IgG from human serum.
BIOMATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Pengyu Liu, Yan Zhang, Ying Guan, Yongjun Zhang
Summary: Hydrogels with ultra-low solid content but good mechanical properties are successfully synthesized using high monomer concentrations and low cross-linker/monomer ratios. The introduction of peptide chains through a poly(l-lysine)-based cross-linker contributes to the gel's excellent mechanical properties, including high stretchability, high tensile strength, superb resilience, high fracture toughness, excellent fatigue resistance, low friction, and high wear resistance. These properties, attributed to the highly entangled structure and a novel energy dissipation mechanism, allow the peptide-crosslinked gel to perform comparably to or better than traditional hydrogels with higher solid content.
ADVANCED MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Mengmeng Yang, Qiujing Dong, Ying Guan, Yongjun Zhang
Summary: A novel molecularly imprinted polymer (MIP) of bovine hemoglobin (BHb) was designed using a peptide crosslinker (PC), which showed high imprinting efficiency, adsorption capacity, and selectivity. This MIP can efficiently separate and purify BHb from bovine blood.
Article
Polymer Science
Keling Hu, Shun Liu, Zhuo Zhao, Yongjun Zhang
Summary: A mild organocatalyzed living radical polymerization method was developed to synthesize high molecular weight polymers with low dispersity. This method demonstrated excellent control over molecular weights and dispersity even at high degrees of polymerization. The resulting block copolymers showed unique microphase separation behavior and had great potential in advanced materials applications, such as thermosensitive nanocarriers.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Polymer Science
Rong Xu, Jiafeng Tian, Yusheng Song, Shihui Dong, Yongjun Zhang
Summary: In this study, researchers successfully constructed multi-responsive hydrogel films using dynamic bonds as crosslinks. These films, fabricated through a layer-by-layer technique, showed linear and practical response modes to temperature, glucose, and fructose. Additionally, the films exhibited fast response times of 45 s and 7 s for glucose and fructose, respectively, suggesting potential for real-time, continuous monitoring of these substances.
Review
Polymer Science
Yi Nan, Chuanzhuang Zhao, Guillaume Beaudoin, X. X. Zhu
Summary: This review summarizes recent progress in the synergistic design strategy for thermoresponsive polymers with an upper critical solution temperature (UCST) in aqueous systems. The precise control of the responsive behavior of the UCST polymers can be achieved through a synergistic effect of hydrogen bonding with other interactions or modification of the chemical structures. The combination of UCST behavior with other stimuli-responsive properties of the polymers may lead to new functional materials with potential applications such as sensors, actuators, and controlled release devices.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Kaojin Wang, Caizi Li, Limin Man, Meng Zhang, Yong-Guang Jia, X. X. Zhu
Summary: The demand for sustainable and environment-friendly materials has prompted the development of biodegradable polymers based on natural compounds. However, the use of metal-based catalysts in the polymerization process raises concerns about the toxicity of the resulting polymers. Therefore, the synthesis of polymers derived from natural compounds using green catalysts is highly desirable. Lipase-catalyzed ring-opening polymerization (ROP) has emerged as a promising strategy for the design and synthesis of such polymers, and this review summarizes the use of ROP catalyzed by lipase for cyclic monomers derived from natural compounds.
CHEMICAL COMMUNICATIONS
(2023)
Article
Materials Science, Biomaterials
Jing Liu, Sijia Gao, Ying Luo, Chunpeng Zhang, Pengliang Zhang, Zilin Wang, Lei Zou, Zhuo Zhao, Yongjun Zhang
Summary: A glucose-sensitive membrane with PBA-based contraction-type amphiphilic block copolymer was constructed through NIPS method. The membrane showed glucose-sensitive insulin release behavior in SBF and FBS, and exhibited good antifouling properties and biocompatibility.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Nanoscience & Nanotechnology
Ju Duan, Wenting Wang, Degui Zou, Jing Liu, Na Li, Junying Weng, Li-ping Xu, Ying Guan, Yongjun Zhang, Pengfei Zhou
Summary: In this study, a composite material consisting of covalent organic frameworks and carbon nanotubes was constructed as cathode material for potassium-ion batteries (PIBs). The synthesized material exhibited excellent electrochemical performance and cycling stability. This work provides a promising high-performance cathode material for PIBs and encourages the development of new types of covalent organic frameworks.
ACS APPLIED MATERIALS & INTERFACES
(2022)
