CHINESE JOURNAL OF POLYMER SCIENCE
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2025
·
IF 4
Zhang Jian-Ye,Xu Xin-Yu,Sun Qiao,Liu Ling,Liu Zeng-He,Zhu Yu-Tian
Thermosets are indispensable to our daily life, but their crosslinked structures make them unable to be processed by the melt processing like thermoplastics, which greatly limits their shape designs and applications. Herein, we address this challenge via an in situ self-growing strategy, i.e. utilizing the dynamic imidazole-urea moiety to suck up and integrate epoxy into the materials and making the thermoplastics grow in situ into thermosets. With this strategy, thermosets can be readily processed via hot-melt extrusion molding, including melt spinning and fused deposition modeling 3D printing. More importantly, this strategy simultaneously integrates the flexibility of polyurethane and the robustness of epoxy resin into the resulting thermosets, yielding a mechanical-reinforcing effect to make the material not only strong but also tough (toughness: 99.3 MJ·m −3 , tensile strength: 38.8 MPa). Moreover, the crosslinking density and modulus of the as-prepared thermosets (from 34.1 MPa to 613.7 MPa) can be readily tuned on demand by changing the growth index. Furthermore, these thermosets exhibited excellent thermal stability and chemical resistance.
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Nano Research
·
2024
·
IF 9.5
Liu Shiwei,Wang Jing,Wu Keqi,Yang Zhirong,Dai Yan,Zhang Junmei,Wu Wenjia,Wang Jingtao
Electrolytes with high-efficiency lithium-ion transfer and reliable safety are of great importance for lithium battery. Although having superior ionic conductivity (10 −3 –10 −2 S·cm −1 ), traditional liquid-state electrolytes always suffer from low lithium-ion transference number \(({t_{{\rm{L}}{{\rm{i}}^ + }}},\,\, < 0.4)\) and thus undesirable battery performances. Herein, the deep eutectic solvent (DES) is vacuum-filtered into the ∼ 1 nm interlayer channel of vermiculite (Vr) lamellar framework to fabricate a quasi-solid electrolyte (Vr-DES QSE). We demonstrate that the nanoconfinement effect of interlayer channel could facilitate the opening of solvation shell around lithium-ion. Meanwhile, the interaction from channel wall could inhibit the movement of anion. These enable high-efficiency lithium-ion transfer: 2.61 × 10 −4 S·cm −1 at 25 °C. Importantly, the \({t_{{\rm{L}}{{\rm{i}}^ + }}}\) value reaches 0.63, which is 4.5 times of that of bulk DES, and much higher than most present liquid/quasi-solid electrolytes. In addition, Vr-DES QSE shows significantly improved interfacial stability with Li anode as compared with DES. The assembled Li symmetric cell can operate stably for 1000 h at 0.1 mA·cm −2 . The lithium iron phosphate (LFP)∣Vr-DES QSE∣Li cell exhibits high capacity of 142.1 mAh·g −1 after 200 cycles at 25 °C and 0.5 C, with a capacity retention of 94.5%. The strategy of open solvation shell through nanoconfinement effect of lamellar framework may shed light on the development of advanced electrolytes.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-14
·
IF 14.7
He Xiaoli,Gu Hongri,Ma Yanmei,Cai Yuhang,Jiang Huaide,Zhang Yi,Xie Hanhan,Yang Ming,Fan Xinjian,Guo Liang,Yang Zhan,Hu Chengzhi
Optical patterning of colloidal particles is a scalable and cost-effective approach for creating multiscale functional structures. Existing methods often use high-intensity light sources and customized optical setups, making them less feasible for large-scale microfabrication processes. Here, we report an optical patterning method for semiconductor nanoparticles by light-triggered modulation of their surface charge. Rather than using light as the primary energy source, this method utilizes UV-induced cleavage of surface ligands to modify surface charges, thereby facilitating the self-assembly of nanoparticles on a charged substrate via electrostatic interactions. By using citrate-treated ZnO nanoparticles, uniform ZnO patterns with variable thicknesses can be achieved. These multilayered ZnO patterns are fabricated into a UV detector with an on/off ratio exceeding 10 4 . Our results demonstrate a simple yet effective way to pattern semiconductor nanoparticles, facilitating the large-scale integration of functional nanomaterials into emerging flexible and robotic microdevices.
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Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-15
·
IF 36.3
Dong Kailian,Jiang Tao,Chen Guoyi,Cui Hongsen,Wang Shuxin,Zhou Shun,Wang Chen,Yang Yi,Yao Fang,Tao Chen,Ke Weijun,Fang Guojia
The light management strategy is introduced into two-dimensional Dion-Jacobson (2D DJ) perovskite and subsequently elucidated both experimentally and theoretically.
The synthesis of surface-patterned BDAPbBr 4 microplates with high crystalline quality demonstrates the first reported instance of growing such 2D DJ-type perovskite microplates.
The optimized device exhibits excellent photodetection performance under UV region. Moreover, this work represents the successful demonstration of BDAPbBr 4 perovskite for UV weak-light communication, imaging, and polarized light detection.
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Nano-Micro Letters
·
2024
·Vol. 16
·期 1
·1-22
·
IF 31.6
Hu Jiawang,Qian Hao,Han Sanyang,Zhang Ping,Lu Yuan
Photoresponsive black phosphorus (BP)/Ti 3 C 2 T x composites were synthesized by a self-assembly strategy.
Enhanced gas sensitive property was achieved by visible light modulation.
Light activated virtual sensor array was fabricated based on BP/Ti 3 C 2 T x composite.
Diagnosis of coronary heart disease was achieved with the help of machine learning.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
·
IF 15.7
Zhong Yuan,Wang Xue,Huang Zhou,Wei Yao,Tang Qing,Gu Songqi,Li Tingting,Dong Weinan,Jiang Feng,Zhu Haifeng,Shi Yujia,Zhou Zhi,Zhang Yu,Bai Xue,Wu Zhennan
The modulation of traps has found attractive attention to optimize the performance of luminescent materials, while the understanding of trap-involved photoluminescence management of metal nanoclusters greatly lags behind, thus extensively impeding their increasing acceptance as the promising chromophores. Here, we report an efficient passivation of the structural oxygen vacancies in AuAg nanoclusters by leveraging the H 2 O molecules, achieving a sensitive color tuning from 536 to 480 nm and remarkably boosting photoluminescence quantum yield from 5.3% (trap-state emission) to 91.6% (native-state emission). In detail, favored electron transfer relevant to the structural oxygen vacancies of AuAg nanoclusters contributes to the weak trap-state emission, which is capable of being restrained by the H 2 O molecules by taking Au-O and Ag-O bonds. This scenario allows the dominated native-state emission with a faster radiative rate. In parallel, the H 2 O molecules can rigidify the landscape of AuAg nanoclusters leveraging on the hydrogen bonding, thus enabling an efficient suppression of electron-optical phonon coupling with a decelerated non-radiative rate. The presented study deepens the understanding of tailoring the photoluminescence properties of metal nanoclusters by manipulating surface trap chemistry and electron relaxation dynamics, which would shed new light on luminescent metal nanoclusters with customizable performance.
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RARE METALS
·
2024
·
IF 9.6
Shuai Ci-Jun,Zhang Jin,Yang Ming-Li,He Chong-Xian,Shuai Xiong,Xiao Xin-Yi,Wang Dong-Sheng,Shao Yin-Jin,Yang You-Wen
Boron nitride (BN), as a nano-reinforcement, offers notable benefits for zinc (Zn)-based implants due to its distinct asymmetric hexagonal structure and high fracture strength. However, the limited interface adhesion between BN and Zn limits its potential for strengthening and toughening. In this study, copper (Cu) was in situ grown on acidified BN through chemical synthesis and subsequently incorporated into laser additive manufacturing of Zn to enhance interface bonding. During this process, the Cu on BN experienced a displacement reaction with Zn due to thermal reduction induced by the high-energy laser, leading to the replacement of Cu by Zn and the formation of a robust covalent bond between BN and the Zn matrix, thereby improving load transfer. Additionally, the reduced Cu further interacted with Zn to produce the CuZn 5 phase, which was evenly dispersed in the Zn matrix under Marangoni vortices, resulting in both dispersion and Orowan strengthening. Consequently, the ultimate tensile strength of the composites achieved (251 ± 7) MPa. The fracture toughness also showed a notable increase from 12.10 to 24.03 MPa·m 1/2 , as the unique structure of BN effectively redistributed stress at the crack tip and absorbed considerable fracture energy. Furthermore, the Cu@BN/Zn implants demonstrated excellent antibacterial properties. Graphical abstract
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International Journal of Minerals Metallurgy and Materials
·
2025
·
IF 7.2
Wang Chao,Wu Zhongxian,Wang Tongbo,Qiao Bo,Huang Hao,Ran Jincheng,Ma Guangxi,Tao Dongping
To investigate the mechanisms of how nanobubbles enhance the flotation separation performance of galena from pyrite, the effects of nanobubbles on the surface properties of galena and pyrite and the interactions between mineral particles and air bubbles were examined in this study. Various analytical techniques, including focused beam reflectance measurement (FBRM), three-phase contact line (TPCL) analysis, atomic force microscopy (AFM), and contact angle measurement, were employed. It has been demonstrated that nanobubbles significantly enhanced the flotation recovery of galena and its flotation selectivity from pyrite, as compared to the conventional flotation process. The preferential formation of nanobubbles on the galena surface, which is more hydrophobic than pyrite surface, further increased the surface hydrophobicity and agglomeration of galena particles. The introduction of nanobubbles into the flotation system also increased in the maximum TPCL length and detachment length between the galena surface and bubbles, contributing to the enhanced flotation efficiency.
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Journal of Pharmaceutical Innovation
·
2024
·Vol. 19
·期 4
·1-13
·
IF 2.7
Feng Runliang,Chen Shiyu,Zhao Yingshun,Wang Mingzhu,Li Yuli,Jia Yunjing,Song Zhimei
Purpose To improve azithromycin’s antibacterial activity at different pH through combination therapy. Method Azithromycin- and ibuprofen-loaded micelles were fabricated by the self-assembly of MPEG-PVL copolymer, respectively. Results The drug-loaded micelles had controlled drug release property with water-solubility improvement. Notably, at pH 7.4 or 6.0, the in vitro antibacterial experiments demonstrated that there was no synergistic effect for the two native drugs against S. aureus , but a significant synergy was observed when the two preparations were used in combination. In vitro PI fluorescence staining experiment demonstrated that the introduction of ibuprofen-loaded micelles obviously increased cellular uptake under low concentration of azithromycin-loaded micelles. Through SEM and spectral evaluation experiments, it was found that ibuprofen-loaded micelles could increase the cell permeability by interacting with proteins and phospholipids in the cell membrane, which was conducive to promoting azithromycin-loaded micelles to enter the cells and play a drug effect. Conclusion The azithromycin- and ibuprofen-loaded micelles with synergistically enhanced antibacterial activity are potential candidates for effective bacterial combination therapy. Graphical Abstract
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JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Gan Mingyu,Xu Yichen,Tan Jie,Wei Jieyin,Wang Ning,Wang Jianhua
A kind of nitrogen and sulfur co-doped CDs (N, S-CDs) was facilely synthesized using thiourea and citric acid as precursors, which established an “on–off-on” fluorescence probe to sequential detecting mercury and iodine ions inside water and biology samples. Under 360 nm excitation, CDs emit blue fluorescence with an optimal emission peak of 425 nm (on). The fluorescence of CDs experiences a significant quenching effect upon interaction with Hg 2+ ions due to the electron transfer between CDs and Hg 2+ . This quenching effect is subsequently recovered upon the addition of I − owing to the formation of complexes between Hg 2+ and I − . The probe exhibits high selectivity and sensitivity toward Hg 2+ and I − with broad linearity in the range of 5–50 μM and 15–60 μM, respectively, and a low detection limit of 14.336 nM and 38.213 nM, respectively. The constructed fluorescence probe N, S-CDs has been successfully applied to the detection of Hg 2+ and I − in water and biological samples with great recoveries. More importantly, the bioimaging study demonstrated that N, S-CDs are suitable for live monitoring in biological imaging scenarios of Hg 2+ and I − in living cells.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-16
·
IF 10.6
Li Chao,Xiang Zhenyang,Hou Mengfan,Yu Hao,Peng Peng,Lv Yigang,Ma Chao,Ding Han,Jiang Yunpeng,Liu Yang,Zhou Hengxing,Feng Shiqing
Background Spinal cord injury (SCI) often leads to a loss of motor and sensory function. Axon regeneration and outgrowth are key events for functional recovery after spinal cord injury. Endogenous growth of axons is associated with a variety of factors. Inspired by the relationship between developing nerves and blood vessels, we believe spinal cord-derived microvascular endothelial cells (SCMECs) play an important role in axon growth. Results We found SCMECs could promote axon growth when co-cultured with neurons in direct and indirect co-culture systems via downregulating the miR-323-5p expression of neurons. In rats with spinal cord injury, neuron-targeting nanoparticles were employed to regulate miR-323-5p expression in residual neurons and promote function recovery. Conclusions Our study suggests that SCMEC can promote axon outgrowth by downregulating miR-323-5p expression within neurons, and miR-323-5p could be selected as a potential target for spinal cord injury repair. Graphical Abstract
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CELLULOSE
·
2024
·
IF 4.9
Song Ru,Zhu Enwen,Hou Runqing,Niu Fukun,Bao Jiangkai,Chen Dan,Shi Zhuqun,Yang Quanling,Xiong Chuanxi
Treating water pollution, especially dye-contaminated wastewater, in an economical and efficient manner remains a challenge as the surface charge diversity of contaminants. This work designed a nanocellulose-based amphoteric adsorbent based on 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNs) with in situ polymerization of diallyl dimethyl ammonium chloride (PDMDAAC). To explore the adsorption capacity of the amphoteric adsorbent (TOCN/PDMDAAC) for negatively and positively charged contaminants, methyl orange (MO, an anionic dye) and methylene blue (MB, a cationic dye) were employed as adsorbates. The effect of adsorbent on the adsorption performance at different pH, initial concentration of dye, contact time and ionic strength were investigated by batch treatment method. Equilibrium isotherms, kinetics and thermodynamics of dyes onto TOCN/PDMDAAC were examined, which implied that the adsorption behavior was monolayer and the adsorption process was spontaneous endothermic. The adsorption mechanisms are hydrogen bonding and electrostatic interactions between the dye and the active site on the adsorbent. The adsorption behavior of the binary blended dye system of MO and MB has also been investigated, and the addition of the other dye of higher concentration showed a synergistic adsorption behavior. According to the Langmuir model, at pH 7, 298 K, the equilibrium adsorption of MO and MB onto TOCN/PDMDAAC was as high as 404.86 mg g −1 and 520.83 mg g −1 , respectively. These results indicated that TOCN/PDMDAAC was an effective amphoteric adsorbent, which offered a promising strategy for the adsorption of multicomponent dyes in an eco-friendly way. Graphic Abstract
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