CHINESE JOURNAL OF POLYMER SCIENCE
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2024
·
IF 4.1
Ge Zhi-Qing,Yan Shuo,Pan Zu-Xiong,Lei Shan,Mao Xuan-Zhi,Zhao Chu,Wang Mo-Zhen,Ge Xue-Wu
The thermochromic mechanism and the structure-property regulation principle of reversible thermochromic polydiacetylene (PDA) materials have always been a challenging issue. In this work, a series of diacetylene monomers (m-PCDA) containing phenyl and amide or carboxyl groups were synthesized from 10,12-pentacosadiynoic acid (PCDA) through the esterification or amidation reactions. The effects of the number and the distribution of the functional groups in m-PCDA molecules on their solid-state polymerization capability, and the thermochromic mechanism of their corresponding polymers (m-PDA) were investigated and discussed in detail. The results show that the m-PCDA monomers containing both benzene ring and groups that can form hydrogen bonding interactions have strong intermolecular interaction, and are easy to carry out the solid phase polymerization under 254-nm UV irradiation to obtain the corresponding new thermochromic m-PDA materials. The thermochromic behavior of m-PDA depends on its melting process. The initial color-change temperature (blue to red) is determined by the onset melting temperature, and the temperature range in which reversible color recovery can be achieved by repeat heating-cooling treatment is determined by its melting range. According to the proposed thermochromic mechanism of PDA, various new PDA materials with precise thermochromic temperatures and reversible thermochromic temperature ranges can be designed and synthesized through the appropriate introduction of benzene ring and groups that can form hydrogen bonding interactions into the molecular structure of linear diacetylene monomer. This work provides a perspective to the precise molecular structure design and the property regulation of the reversible thermochromic PDA materials.
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Science China-Chemistry
·
2021
·Vol. 64
·期 9
·1498-1503
·
IF 9.445
Zhang Wenyao,Zhang Zhizhong,Jin Wenqi,Zhang Ruonan,Cheng Meng,Yang Zhihua,Pan Shilie
The introduction of oxofluoride anion into anionic group assists to tune optical properties owing to the change of coordination, electronegativity, and according anionic framework. Here, we proposed a rational design of new compounds by fluorine-driven structure and optical property evolution. A new borophosphate Ba 2 BP 3 O 11 with the monoclinic space group P 2 1 / c has been synthesized in the sealed system. Ba 2 BP 3 O 11 exhibits a rare P–O–P bridge formation, which is the first example in alkaline-earth metal borophosphates. By further substituting [BO 4 ] 3− with [BO 3 F] 4− , the first alkaline-earth metal/lead fluoroborophosphates M 2 BP 2 O 8 F (M = Ba and Pb) with the same space group were designed. Since the scissors effect of fluorine, in M 2 BP 2 O 8 F (M = Ba and Pb), a BO 3 F tetrahedron corner-sharing with three PO 4 tetrahedra forms 1D chains along the b -axial direction, which are filled by MO n (M = Ba/Pb, n = 5, 6, 8) distorted polyhedra. The first principles calculation shows that the borophosphate Ba 2 BP 3 O 11 has a birefringence about 0.013 @1,064 nm, while the fluoroborophosphates M 2 BP 2 O 8 F (M = Ba and Pb) have the values of 0.035 and 0.043 @1,064 nm, respectively. Such an apparent enhancement in birefringence is derived from synergies of the oxyfluoride and cation. The introduction of fluorine-containing heteroanionic groups provides a feasible strategy to design novel promising optical materials.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jin Dong,Yi-Xuan Fu,Bai-Feng Zheng,Meng-Xi Chen,Qiong Chen,Kandegama Wishwajith,Jiangqing Dong,Hong-Yan Lin,Guang-Fu Yang
Mosquito-borne diseases remain a significant global health burden, necessitating innovative vector control strategies. 4-Hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors, widely used as herbicides, have been recently explored for their potential to disrupt mosquito tyrosine metabolic pathways, offering a novel approach to mosquito control. This study utilized a structure-based rational design strategy to repurpose existing HPPD inhibitors, such as pyrazole-benzene 2,2-dioxothiadiazole and pyrazole-1,3-isoindolinone hybrids, targeting Aedes aegypti HPPD ( Aa HPPD). Biochemical assays demonstrated that a series of synthesized hybrid compounds exhibited superior inhibitory activity against mosquito-derived HPPD compared to traditional inhibitors, the IC 50 values of compound a9 and compound c14 are 7.70 nM and 53.80 nM, respectively. Crystallographic analysis showed stable inhibitor binding mediated by chelation with metal ions in the active site and π-π interactions with Phe336 and Phe364. C6/36 cell assays further confirmed elevated tyrosine accumulation and significantly affected energy metabolism in the tricarboxylic acid cycle following treatment with the newly designed inhibitors. These findings highlight the potential of repurposed HPPD inhibitors as safe and effective mosquito control agents with novel mechanisms of action.
研究领域:
医学
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生物学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 11
·4954-4969
·
IF 4.5
Zhang Huan,He Jing,Xiong Yuanyuan,Mu Huaixuan,Deng Yiqing,Zhao Qiang
Carbon dots have attracted much attention in the field of antibacterial because of their good biocompatibility, easy preparation, and basically not inducing bacterial resistance. At present, studies have shown that many antibacterial carbon dots have high positive surface potential, but few researchers have been carried out on how to design carbon dots with high positive surface potential by using nontoxic precursors. In this paper, three structurally similar amino acids with different isoelectric points were selected as carbon sources, and three kinds of carbon dots based on amino acid were synthesized with hydrothermal method. The structural characteristics of the three carbon dots were characterized by XRD, FT-IR, XPS, etc. The content of nitrogen-containing groups of the three carbon dots was compared with the Kaiser test. The relationship between the Zeta potential and the antibacterial effect was also investigated. And it shows that the arginine carbon dots, which have the highest positive charge, also have the best antibacterial performance. So, the arginine carbon dots were further doped with nitrogen-containing molecules (diethylenetriamine, DETA) to obtain high surface positive potential carbon dots (named DETA-Arg-CDs, Zeta potential = + 21.7 mV) with the minimum inhibitory concentration (MIC) against E. coli and S. aureus being 8 and 4 ug/mL, respectively. The antibacterial mechanism of high surface positive potential carbon dots was demonstrated by a series of experiments and computational simulations. Cytotoxicity tests showed that the carbon dots were almost nontoxic within the range of antibacterial concentration. Finally, it was applied to the preparation of antibacterial masks. The bacteriostatic zone experiment showed that the mask sprayed with DETA-Arg-CDs had an obvious bacteriostatic zone, while the blank control group had no bacteriostatic zone. In summary, this study synthesized carbon dots with excellent antibacterial properties by using simple and safe amino acids and small nitrogen-containing molecules and explored the antibacterial mechanism of carbon dots with high surface positive charge.
研究领域:
材料科学
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微生物学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Yan Shang,Jing Xu,Yue Ma,Zezhong Li,Qian Li
Photocatalytic hydrogen production was a potential strategy to solve energy shortage and environmental pollution. One of the valuable research directions for improving photocatalytic efficiency was to prepare catalysts in an efficient and low-cost way. Lamellar Sm 2 WO 6 and dodecahedron Zeolitic Imidazolate Framework-67 (ZIF-67) have been prepared successfully based on morphology control. Sm 2 WO 6 /ZIF-67 was prepared by a novel in situ growth scheme, which was confirmed by crystal structure, morphology and elemental composition analysis . The close interaction between Sm 2 WO 6 and ZIF-67 was confirmed by photoelectrochemical measurements. Based on the design of band structure , the S-type heterojunction was constructed. The research results of this paper provided a reference for exploring non-noble metal composite materials and demonstrated great potential in photocatalytic.
研究领域:
材料科学
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能源化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Ningning Dong,Liuxin Chao,Yue He,Bangjun Li,Yun Zhu,Lu Liu,Guobing Ying
Si 3 N 4 /BN composites were fabricated via hot-pressing sintering, achieving outstanding mechanical properties with flexural strength of 623.41 MPa and fracture toughness of 10.22 MPa·m 1/2 - through structural optimization. Key factors contributing to these properties included the use of finer Si 3 N 4 powder, unidirectional fiber alignment, and an optimized fiber diameter of 0.95 mm, which enhanced densification. The residual strength of samples subjected to oxidation testing at 1000-1400 °C for 1-64 h was measured. Notably, samples oxidized at 1000 °C for 4 h exhibited a 5.04% increase in flexural strength compared to their room-temperature strength, attributed to SiO 2 healing the microcracks. At 1200 °C, needlelike Y 2 Si 2 O 7 crystals formed, while higher temperatures (up to 1400 °C) and prolonged oxidation led to their dissolution and the precipitation of platelike aluminosilicates. These microstructural transformations were found to critically influence the residual strength, highlighting the intricate relationship between oxidation conditions, phase evolution, and mechanical properties in Si 3 N 4 /BN composites.
研究领域:
材料科学
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高温材料
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复合材料设计
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结构力学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 26
·2201274
·
IF 19.924
Xingang Liu,Jingfeng Liu,Lirong He,Yinghao Shang,Chuhong Zhang
Piezoelectric energy harvesters (PEHs) have attracted great attention owing to the capability of converting various forms of mechanical energy into electricity. Traditional approaches for improving piezoelectric conversion efficiency usually involve either complicated composite preparation or significant compromise in the device's mechanical strength and measure, which obviously cannot fulfill the stringent requirements for power supplies within miniaturized footprint and on mechanical compliance of modern electronics. Herein, an innovative strategy coupling 3D printing with a rational structural design is proposed to address the substantial difficulty to architect 3D PEHs featuring boosting piezoelectric performance without alteration either in material (high β-phase content (97.4%) self-poled poly(vinylidene fluoride) (PVDF) used in this case) or in device measure. The 3D-printed piezoelectric latticed cells tailoring in density distribution geometries not only demonstrate the appealing advantages of fast response time, high sensitivity, and excellent linearity within a wide pressure range outperforming many 2D film sensors, but are more sensitive to structure variation for easier regulation of piezoelectric output saving the hassle of changing material, which is beyond the practicability to the traditional 2D sensors. 3D printing highlights a powerful tool in modeling and manipulating complex 3D piezoelectric-regulable energy harvesters for intelligent sensing applications otherwise inaccessible to traditional techniques.
研究领域:
材料科学
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电子工程
·
智能制造
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 22
·4933
·
IF 4.967
Yuezhen Hua,Wang Cui,Zekai Ji,Xin Wang,Zheng Wu,Yong Liu,Yuyao Li
Fibrous air filtration materials are highly desirable for particle removal from high-temperature emission sources. However, the existing commercial filter materials suffer from either low filtration efficiency or high pressure drop, due to the difficulty in achieving small fiber diameter and high porosity simultaneously. Herein, we report a facile strategy to fabricate mechanical robust fibrous aerogels by using dual-scale sized PAI/BMI filaments and fibers, which are derived from wet spinning and electrospinning technologies, respectively. The creativity of this design is that PAI/BMI filaments can serve as the enhancing skeleton and PAI/BMI fibers can assemble into high-porosity interconnected networks, enabling the improvement of both mechanical property and air filtration performance. The resultant dual-scale sized PAI/PBMI fibrous aerogels show a compressive stress of 8.36 MPa, a high filtration efficiency of 90.78% (particle diameter of 2.5 μm); for particle diameter over 5 μm, they have 99.99% ultra-high filtration efficiency, a low pressure drop of 20 Pa, and high QF of 0.12 Pa−1, as well as thermostable and fire-retardant properties (thermal decomposition temperature up to 342.7 °C). The successive fabrication of this material is of great significance for the govern of industrial dust.Keywords:polyamide-imide;structural construction;air filtration;binary aerogels
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Xianglong Wan,Mingyue Zhang,Ya Wang,Bing Chen,Zhipeng Gui,Yahui Xu,Yin Zhang,Dehan Chen,Ziang Du,Timphena Nathabeth Jah
Environmentally friendly polyvinyl alcohol (PVA) has a broad range of potential applications in membrane science. This article describes the co-crosslinking used to adjust the water resistance and swelling level of PVA molecules and broaden their applications. To integrate functional groups and carbon chains in the PVA matrix, the crosslinking agents glutaraldehyde (GA) and ammonium persulfate (APS) were used, the complexity of the PVA crosslinking structure can be dramatically increased. The results showed that the crosslinked PVA film's water resistance and thermal stability qualities have improved. The synergistic crosslinked film's swelling percentage, maximum decomposition temperature , and diffusion constant altered from 590 %, 242.9 ℃, and 1.13 × 10 −11 m 2 /s to 129 %, 344.7 ℃, 0.02 × 10 −11 m 2 /s respectively. The synergistic crosslinked film's swelling percentage, maximum decomposition temperature, and diffusion constant were altered with the molecule structure design. This method can give a novel reference to the performances design of hydrophilic polymers in different applications.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Jingfeng Liu,Yinghao Shang,Zhuzhu Shao,Xingang Liu,Chuhong Zhang
The piezoelectric energy harvester (PEH) has attracted huge attention as an eco-friendly way to harvest mechanical energy for self-powered system. Structural design is crucial for optimizing the energy conversion efficiency of PEHs, especially some specialized three-dimensional (3D) structures as theoretically predicted. However, there are few reports guiding from the simulation to the real construction of high performance PEHs, and it is usually difficult to use traditional processing methods to realize customized 3D designate structures. Herein, the fused deposition modeling (FDM) 3D printing technique is developed to architect four customized 3D PVDF PEHs, and the relationship between the designed structures and corresponding piezoelectric output performances are systematically studied by theoretical simulation. The results show that, with a decreased force-bearing area, the effective deformation of the PEHs along the vertical direction increases, resulting in an excellent piezoelectric output. Thus, the optimal 3D conus arrayed PEH shows the highest piezoelectric output voltage of 8.69 V and current of 90.8 nA, which is about 2.75 times higher than that of the cylinder arrayed one. Additionally, the conus arrayed PEH can fast charge a 1 μF capacitor to 2.5 V within 100 s. This work manifests 3D printing as a powerful tool to reconcile the simulation and architecting for 3D PEHs with enhanced output performance for futuristic self-powered systems.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Bin Li,Boxuan Jin,Ruochen Zhang,Kaixuan Ma,Xianwen Wu,Lei Dai,Ling Wang,Zhangxing He
Metal zinc is used as anode in aqueous zinc-ion batteries due to its environmental protection, abundant storage, and high theoretical capacity. However, zinc anode has many challenges such as side reactions and zinc dendrites, which impede the further development of aqueous zinc-ion batteries. A facile strategy of constructing Sn doped NaTi 2 (PO 4 ) 3 (NTP/Sn) protective layer on surface of zinc anode (Zn@NTP/Sn) was adopted to enhance the cycling stability of zinc anode in this work. Sn doped NaTi 2 (PO 4 ) 3 was used to realize high-performance zinc anode via the structure design and interfacial characteristics, which are beneficial to accelerating transfer of Zn 2+ and improving interface performance. The average voltage hysteresis of Zn@NTP/Sn symmetric cell is only 17.4 mV at the current density of 0.4 mA cm −2 , which is much lower than that of bare Zn (75.8 mV) and Zn@NTP (43.7 mV) symmetric cells. Furthermore, Zn-MnO 2 full cell using Zn@NTP/Sn anode also shows good cycling performance. After 500 cycles at a current density of 1.2 A g −1 , Zn@NTP/Sn-MnO 2 full cell has the highest capacity of 124.2 mAh g −1 . While the bare Zn-MnO 2 and Zn@NTP-MnO 2 full cells only have 39.3 mAh g −1 and 74.2 mAh g −1 . The excellent electrochemical performance is related to improvement of wettability , increase of cell volume, and reduction of side reactions. In general, this work realizes a synergistic strategy combining structural design and interfacial modification by doping Sn for NTP as a protective coating layer for zinc anode, which provides a simple strategy for high-performance rechargeable aqueous zinc-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
MACROMOLECULES
·
2025
·
IF 5.2
Xiao Liu,Xuyan Yang,Jingping Wu,Hongfei He,Xueqi Zhao,Keke Qiao,Yong Zheng,Jian Hu
Natural load-bearing tissues such as muscles, tendons, and cartilages exhibit exceptional toughness and anisotropy due to their well-defined ordered composite structure and strong adhesion between the structural components. However, synthesizing bioinspired soft materials with similar structure and properties remains a significant challenge. Here, we design a stripe-patterned topoarchitected polymer network (TPN) by combining interpenetrating polymer networks with a two-phase composite structure. We use a three-step sequential polymerization process along with photolithography to prepare TPN hydrogels, where densely cross-linked hard phase structure is in topological entanglement with a loosely cross-linked soft phase matrix to achieve strong interfacial adhesion. The stripe-patterned TPN hydrogels possess both high toughness and anisotropic mechanical properties. This work provides a general network design strategy for synthetic soft materials analogous to natural load-bearing tissues.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）