ADVANCED POWDER TECHNOLOGY
·
2026
·Vol. 37
·期 5
·105239
·
IF 4.5
Yuli Wang,Qichao Xin,Chengling Zou,Yu Wang,Yuanyuan Li,Hai Nan,Fengqi Zhao,Haixia Ma
3,4-Bis(4′-nitrofurazano-3′-yl)furoxan (DNTF), a high-energy–density material, is severely restricted in practical applications due to its high mechanical sensitivity. This study develops an advanced desensitization strategy for DNTF composite via electrostatic spraying technology. The DNTF/FOX-7@NC (FOX-7, 1,1-diamino-2,2-dinitroethene; NC, nitrocellulose) hollow microsphere structure was formed through controlling the propulsion rate and the FOX-7 content. The composites retain the crystalline features of DNTF and FOX-7, while NC forms a continuous protective surface layer. Subsequently, the influence of FOX-7 content on the safety performance and combustion efficiency of the composites is systematically investigated. Results indicated that DNTF/FOX-7@NC hollow microsphere composites achieved a favorable balance between energy output and safety performance. Specifically, composites (with 38 % FOX-7 content) demonstrate superior thermal stability compared to raw DNTF. Its impact sensitivity increased by 14.7 J compared to raw DNTF (4.9 J), the critical load for friction sensitivity exceeds 360 N, demonstrating superior mechanical safety. Simultaneously, the combustion efficiency of the DNTF/FOX-7@NC hollow microsphere composite is significantly optimized, benefiting from the architecture of the hollow microspheres facilitating heat and mass transfer. This resulted in a 43 % reduction in ignition delay time of composite (from 109.24 s to 61.71 s). This work resolves the energy-safety trade-off in energetic materials via hollow microsphere structural design by electrostatic spray strategy, offering a scalable strategy for next-generation munitions.
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高影响因子
CARBON
·
2026
·
IF 12.7
Jiale Ma,Ying Huang,Hanjie Huang,Xiaoxiao Zhao,Huiyang Jiang,Qianqian Niu,Chenbo Liu,Meng Zong
The rapid development of modern communication technology has exacerbated electromagnetic pollution, creating a strong demand for high-performance electromagnetic wave (EMW) absorption materials. Metal-organic frameworks (MOFs) derivatives are promising candidates owing to their tunable structures and high specific surface areas. However, conventional MOFs-based absorbers still suffer from magnetic component aggregation or insufficient dielectric loss, leading to poor impedance matching and narrow effective absorption bandwidth (EAB). Herein, flexible flower-like non-magnetic ZIF-7-derived nitrogen-doped carbon films were fabricated via electrospinning and controlled carbonization. By regulating carbonization temperature and precursor concentration, the morphology and electromagnetic parameters were optimized. The synergistic effect of the unique flower-like structure and nitrogen doping enhances dielectric loss and optimizes impedance matching. Consequently, ZIF-7-NCF-2 achieves a minimum reflection loss (RL) of −75.50 dB at 2.57 mm and an ultra-broad EAB of 11.36 GHz at 3.35 mm, covering almost the entire X and Ku bands. This work provides a feasible strategy for designing high-performance and broadband non-magnetic MOFs-derived EMW absorption materials.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Xingkun Wang,Chen Zhu,Yutao Xu,Jianan Xie,Miao Meng,Hong Dong,Jincheng Liu,Xiaolei Sun,Feng Luo
As integrated circuit technology scales toward the Angstrom era, the limitations of traditional spin-coated wet photoresists-specifically regarding stochastic defects and pattern collapse-have become critical bottlenecks for high-numerical-aperture extreme ultraviolet (high-NA EUV) lithography. Consequently, dry photoresists deposited via molecular layer deposition (MLD) have emerged as a transformative solution, offering atomic-level thickness control and superior uniformity. Here, we report a tin-based hybrid dry photoresist synthesized via MLD using tetrakis(dimethylamino)tin and 2-butene-1,4-diol. A distinctive feature of this material is its tunable polarity, governed by the development modality: wet development in an ammonia solution yields a positive-tone resist, while dry development using fluorine-based inductively coupled plasma (ICP) etching results in a negative-tone profile. Under 50 keV electron beam exposure (wet development) conditions, we achieved an outstanding resolution limit of 7 nm for a single line, whilst under EUV exposure conditions, we achieved a resolution limit of 18 nm for a single line. To decode the underlying physics of this dual-tone behavior, we employed a rigorous multiscale approach combining in-situ characterization (XPS, TEM, EDS, and EUV-irradiated mass spectrometry) with density functional theory (DFT) calculations. These theoretical and experimental insights elucidate the specific bond-breaking and reorganization mechanisms driving the polarity switch. This work not only presents a high-performance candidate for next-generation lithography but also establishes a fundamental framework for the mechanistic design of advanced dry photoresists.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Liang Zhao,Jiaxin Yang,Yujia Peng,Wudeng Wang,Desheng Li,Hai Lin
High contrast is realized via switchable excitation in Ho 3+ /Yb 3+ co-doped molybdates. • Electrospun PMMA/TPU binary networks achieved fiber-welding for 400% stretchability. • Hydrophobic encapsulation with a large contact angle impedes moisture ingress. • Excellent thermal stability is verified by 90% retained emission intensity at 373 K. • Strain sensing and dual-mode encryption broaden application prospects for smart skin. Smart adaptive optoelectronic skins represent a critical foundation for next-generation wearable electronics, spurring extensive research into intelligent platforms that simultaneously harness mechanical compliance and excitation-dependent emissions to execute complex, multi-level security interactions. Pristine microcrystalline Li 2 Gd 4 (MoO 4 ) 7 : Ho 3+ /Yb 3+ phosphors display dual-mode emissions, yielding green under near-ultraviolet excitation and orange-red under 980 nm irradiation due to tailored energy transfer pathways, yet inherent structural brittleness completely prevents their direct deployment in flexible configurations. Overcoming this fundamental bottleneck relies on encapsulating these phosphors via electrospinning within a binary polymeric blend consisting of polymethyl methacrylate and thermoplastic polyurethane, yielding hybrid fibrous networks with exceptional stretchability up to 400% elongation driven by microscopic fiber-welded junctions optimizing tensile load distribution. Crucially, sophisticated multi-environmental modulation is manifested within these flexible scaffolds, where the photoluminescence intensity is dynamically governed by tensile strain due to shifting spatial densities, while this dense polymeric network maintains stable luminescence at 373 K and provides a superior hydrophobic barrier maintaining static water contact angles beyond 100°. Synergizing this strain-responsive sensing with the excitation-switchable dual-color outputs enables successful dual-functional integration of precise kinesiologic tracking and multi-level information cryptography, paving a promising way for self-supported smart skins and advanced optical information security.
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BRITISH JOURNAL OF NUTRITION
·
2023
·
IF 3.6
Fan Du,Min Yan,Lili Duan,Guolong Xie,Xiuhua Yao,Wenjing Hu,Yu Liu,Min Meng,Jiepeng Chen,Di Shao
Menaquinone-7 (MK-7), a multipotent vitamin K2, possesses a wide range of biological activities, a precise curative effect and excellent safety. A simple and rapid LC-APCI-MS/MS method for the determination of MK-7 in human plasma with single liquid–liquid extraction (LLE) extraction and 4·5-min analysis time has been developed and validated. Four per cent bovine serum albumin (BSA) was used as surrogate matrix for standard curves and endogenous baseline subtraction. This method was reproducible and reliable and was used to analyse of MK-7 in human plasma. The endogenous circadian rhythm and bioavailability of MK-7 were investigated in two randomised single-dose, open, one-way clinical trials (Study I and Study II). A total of five healthy male subjects were enrolled in Study I and 12 healthy male subjects in Study II. Single-dose (1 mg) of MK-7 was given to each subject under fasting condition, and all eligible subjects were given a restricting VK2 diet for 4 d prior to drug administration and during the trial. The experiment results of Study I demonstrated that endogenous MK-7 has no circadian rhythm in individuals. Both studies showed MK-7 are absorbed with peak plasma concentrations at about 6 h after intake and has a very long half-life time.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Siyuan Liu,Jingxing Liu,Zefen Wang,Zhiqi Wu,Yiliang Wei,Pengru Liu,Xiongdiao Lan,Yexin Liao,Ping Lan
Glucose oxidase (GOx) has a great application potential in the determination of glucose concentration. However, its sensitivity to the environment and poor recyclability limited its broader application. Herein, with the assistance of DA-PEG-DA, a novel immobilized GOx based on amorphous Zn-MOFs (DA-PEG-DA/ [email protected] /PDA) was developed to impart excellent properties to the enzyme. SEM, TEM, XRD, and BET analyses confirmed that GOx was embedded in amorphous ZIF-7 with ∼5 wt% loading. Compared with free GOx, DA-PEG-DA/ [email protected] /PDA exhibited enhanced stability, excellent reusability, and promising potential for glucose detection. After 10 repetitions, the catalytic activity of DA-PEG-DA/ [email protected] /PDA can maintain 95.53 % ± 3.16 %. In understanding the in situ embedding of GOx in ZIF-7, the interaction of zinc ion and benzimidazole with GOx was studied by using molecular docking and multi-spectral methods. Results showed that zinc ions and benzimidazole had multiple binding sites on the enzyme, which induced the accelerated synthesis of ZIF-7 around the enzyme. During binding, the structure of the enzyme changes, but such changes hardly affect the activity of the enzyme. This study provides not only a preparation strategy of immobilized enzyme with high activity, high stability, and low enzyme leakage rate for glucose detection, but also a more comprehensive understanding of the formation of immobilized enzymes using the in situ embedding strategy.
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PubMed
高影响因子
MATERIALS & DESIGN
·
2023
·
IF 8.4
Shengqi Zang,Can Xiao,Maodian He,Bo Chen,Bingyao Liu,Shuai Yi,Lei Wang,Junxia Li,Xiaolei Shi,Shoushan Bu,Lei Jin
Biomimetic surface modification of scaffolds with osteoinductive molecules is a promising strategy for improving the bioactivity of scaffold and stimulating stem cell signals in bone tissue engineering. Zirconia (ZrO 2 ) offers excellent mechanical properties and biocompatibility, but its bio-inert nature hinders its use in bone regeneration applications. Recombinant human bone morphogenetic protein 7 (rhBMP-7) and arginine-glycine-aspartate (RGD) peptide were investigated for their potential use as surface-modifying biomolecules on the ZrO 2 scaffold. Our results showed that human dental pulp stem cells (hDPSCs) were induced to osteogenic differentiation by rhBMP-7 and RGD in a dose-dependent manner. Significantly enhanced alkaline phosphatase activity and up-regulated expression of osteogenic genes in hDPSCs were associated with rhBMP-7 and RGD grafting onto the ZrO 2 scaffold. Western blot analysis revealed that rhBMP-7 and RGD grafting led to activation of the SMAD1/5, p38 MARK, and ERK signaling pathways during hDPSCs differentiation. After 4 and 8 weeks of transplantation, the hDPSCs-seeded ZrO 2 -RGD-BMP-7 scaffold facilitated osteogenic differentiation and enhanced in vivo bone formation in critical-sized calvarial bone defects. The results support the simultaneous use of rhBMP-7 and RGD as surface-modifying biomolecules and hDPSCs as a source of osteogenic stem cells in conjugation with ZrO 2 -based porous scaffold for bone tissue engineering.
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MOLECULAR PHARMACEUTICS
·
2019
·
IF 4.396
Kai Dong,Qiuya Lei,Hongfei Qi,Yanni Zhang,Ning Cui,Xianglong Wu,Li Xie,Xiaocheng Yan,Tingli Lu
The excessive increase of intracellular reactive oxygen species (ROS) makes tumor cells usually in the state of oxidative stress. Although tumor cells can adapt to this state to a certain extent by upregulating antioxidant systems, the further ROS insults disrupt the transient intracellular redox balance, eventually leading to apoptosis and necrosis. Therefore, increasing the intracellular ROS level can effectively amplify the oxidative stress and induce apoptosis, which can be employed as a strategy for tumor treatment. Herein, a unique pH-responsive ROS inducing micellar system was reported in this study to specifically amplify the ROS signal in tumor cells. This micellar system was constructed by a new amphiphilic polymer, PIAThydCA, composed of poly(itaconic acid) (PIA) as the hydrophilic backbone, d-α-tocopherol polyethylene glycol 1000 succinate (TPGS) as the hydrophobic side chain, and cinnamaldehyde (CA) as the ROS-generating agent, which were linked to PIA by the pH-sensitive hydrazone bond. PIAThydCA micelles could be degraded in the intracellular acidic environment through the hydrolysis of hydrazone bond and release CA. CA and TPGS could amplify oxidative stress cooperatively to kill MCF-7 human breast cells preferentially through the mitochondrial apoptosis pathway. Therefore, we anticipate that the PIAThydCA micelles could exert great potential in anticancer therapy.
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PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2019
·Vol. 33
·期 10
·e5145
·
IF 3.259
Zhiguo Lv,Shuying Zhang,Zhenmei Guo,Xi Cheng,Jiaomei Wang,Chao Zhang
The synthesis of alcohol ester 12 is one of the valuable industrial processes, but it was impeded by poor separating property and recycling ability of the catalytic systems. Herein, four novel DBU-based basic ionic liquids (DBILs) of [BDBU]IM, [BDBU]OH, [ODBU]IM, [[ODBU]OH were synthesized successfully by introducing the alkyl chains of 1-bromobutane or 1-bromooctane to 1,8-diazabicyclo [5.4.0] undec-7-ene (DBU), and then, employing imidazole (IM − ) or hydroxide (OH − ) as counter ions. The above obtained four ionic liquids were applied in the synthesis of alcohol ester 12 in isobutyraldehyde (IBD)/aqueous media for the first time. Interestingly, after reaction, production of alcohol ester 12 can be self-separated from ionic liquids/water (ILs/W) catalytic system automatically. Furthermore, the self-separated ILs/W can be recycled and used in next catalytic reaction for at least 5 times without obvious loss of catalytic performance. In this work, the structure, purity, thermal stability and alkalinity of DBILs were characterized systematically. [BDBU]IM shows high alkalinity and thus enhances yield of 66.17%. From thermo gravimetric analyzer (TGA), [BDBU]IM also exhibits excellent thermal stability. So [BDBU]IM was chosen for the further studying. Furthermore, quantum chemistry is applied to calculate the interaction forces and electron energies of reactants by DFT, and the calculation results illustrate the feasibility of synthetic process of DBILs. The self-separation strategy of DBILS in this work may open up a new avenue for the clean synthesis of other industrial products.
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CRYSTENGCOMM
·
2017
·Vol. 19
·期 44
·6644-6650
·
IF 3.474
Ying-Jie Jia,Yi-Gang Chen,Xiao-Ni Yao,Xian-Ming Zhang
A series of alkali earth cadmium selenites including MgCd3(SeO3)4 (1), Ca0.7Cd2.3(SeO3)3 (2), SrCd(SeO3)2 (3) and BaCd(SeO3)2 (4) are synthesized by hydrothermal reaction and studied in detail by single crystal and powdered X-ray diffractions, thermal analyses, IR and UV spectral measurements and dipole moment calculation. 1 features a 3D anionic [Cd3(SeO3)4]2− framework constructed from isolated SeO3 trigonal pyramids and 2D [Cd3O12]n layers, in which the [Cd3O12]n layer is composed of edge-shared [Cd2O10]16− dimers and butterfly-like [Cd4O20]32− tetramers. 2 shows a smooth 2D [Cd2(SeO3)3]n layer composed of unique [Cd(SeO3)]n double chains. 3 exhibits a wavelike 2D [Cd(SeO3)2]n layer constructed from corner-shared CdO6 octahedra and isolated SeO3 trigonal pyramids. 4 displays a windmill-like 1D [Cd(SeO3)2]n chain built from zigzag [CdO4]n chain motifs and isolated SeO3 trigonal pyramids. The alkali earth oxide motifs demonstrate interesting and regular changes from isolated MgO6 octahedra, CaO7 polyhedra, and SrO9 tri-capped trigonal prisms based on a ribbon chain to BaO12 icosahedra based on a brucite-like layer, and meanwhile the SeO3 groups are observed from variable tetradentate to hexadentate coordination modes. These flexible motifs reveal that cadmium selenites are strongly affected by the size of the alkali earth cations, providing a feasible approach to modulating their space structure via selection of template cation.
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MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Jun Gao,Danyang Fan,Qinghua Chu,Haixia Lyu,Zenghong Xie
In this study, a novel surface molecularly imprinted polymer (MIP) based on zeolitic imidazolate framework (MIP@ZIF-7) was prepared using dibutyl phthalate (DBP) as template via “one-pot” method, which was used for extraction and determination four phthalates (PAEs) in food samples coupled with high performance liquid chromatography (HPLC). The obtained MIP@ZIF-7 was characterized by fourier transform infrared spectrometer (FT-IR), energy dispersive spectrum (EDS), scanning electron microscopy (SEM), nitrogen adsorption–desorption and contact angle tester. The adsorption performance of the prepared ZIF-7, MIP and MIP@ZIF-7 was compared and the results showed that MIP@ZIF-7 exhibited higher adsorption capacity and selectivity for PAEs owing to combining the high specific surface area and excellent stability of ZIF and the specific recognition of MIP. Subsequently, several requisite synthesis and extraction parameters were investigated. Under the optimal conditions, the linear range of the method was 1–100 μg L −1 and the detection limits were in a range of 0.1–0.8 μg L −1 . The spiked recovery rate of PAEs from drinking water, carbonated beverages and fruit juices ranged from 77.1 ± 1.5% to 100.7 ± 3.4%, with relative standard deviation of 1.65–4.87% (n = 3). The results indicated that MIP@ZIF-7 could be effectively employed for extraction and determination trace PAEs in food.
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高影响因子
EUROPEAN POLYMER JOURNAL
·
2021
·
IF 4.598
Yang Chen,Jie Zhang,Wenhao Xiao,Anfu Chen,Zhixian Dong,Jinbao Xu,Wenhua Xu,Caihong Lei
1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) was used as organocatalyst to reinvestigate the ring-opening polymerization (ROP) of ε -caprolactone (CL) with benzyl alcohol (BnOH) initiator in bulk at 90 °C considering the unsuccessful ROP of CL at RT in previously reported publications. Kinetic study indicates that the PCLs could be well-designed with a controlled/living character of polymerization. The use of functional initiators, such as 2-hydroxyethyl methacrylate (HEMA), propargyl alcohol (PGA), 6-azido-1-hexanol (AHA) and methoxy poly(ethylene glycol) (mPEG) leads to end-functionalized PCLs. Accordingly, the block copolymerization of CL with δ-valerolactone (VL), trimethylene carbonate (TMC) and lactide (LA) successfully proceeded to give PCL- b -PVL, PCL- b -PTMC and PCL- b -PLA copolymers. Finally, the reaction mechanism was studied with DFT calculations and NMR measurements.
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危险品化学品经营许可证（带存储）