Nature Synthesis
·
2025
·
IF 20
Chen Cheng-Xia,Cui Xili,Xiong Yang-Yang,Lan Pui Ching,Tan Kui,Wei Zhang-Wen,Niu Zheng,Shan Chuan,Yang Lifeng,Ma Shengqian,Su Cheng-Yong
Dynamic chemistry offers opportunities for the design of smart materials that can self adapt or self repair to mediate their functionality. However, achieving anti-crack toughness using dynamic covalent bonds is often overlooked in crystalline porous solids such as metal–organic frameworks. Here we propose that crystalline dynamicity can be derived from bio-inspired disulfide metathesis, as demonstrated by a dynamic combinatorial library of isomeric metal–organic frameworks (LIFM-105, LIFM-105i, and LIFM-105a). Sulfur–sulfur bond breakage and regeneration facilitate stimuli-responsive interconversion between two-dimensional and three-dimensional frameworks, involving simultaneous layer rotation, component shift and linkage reorganization. The disulfide exchange-based crystal dynamics provides these porous solids with gas-induced adaptiveness and the gate effect, enabling pore tuning for efficient removal of C 2 H 2 from C 2 H 4 . Additionally, the guest-adaptation-motivated restoration and reorganization of the ‘damaged’ frameworks afford a promising protocol to apply radical-mediated dynamic solids as adaptive porous materials for durable separation and other applications.
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高影响因子
Light-Science & Applications
·
2023
·Vol. 12
·期 1
·1-9
·
IF 19.4
Liu Zhihao,Hu Guangwei,Ye Huapeng,Wei Miaoyang,Guo Zhenghao,Chen Kexu,Liu Chen,Tang Biao,Zhou Guofu
Microlens arrays (MLAs) based on the selective wetting have opened new avenues for developing compact and miniaturized imaging and display techniques with ultrahigh resolution beyond the traditional bulky and volumetric optics. However, the selective wetting lenses explored so far have been constrained by the lack of precisely defined pattern for highly controllable wettability contrast, thus limiting the available droplet curvature and numerical aperture, which is a major challenge towards the practical high-performance MLAs. Here we report a mold-free and self-assembly approach of mass-production of scalable MLAs, which can also have ultrasmooth surface, ultrahigh resolution, and the large tuning range of the curvatures. The selective surface modification based on tunable oxygen plasma can facilitate the precise pattern with adjusted chemical contrast, thus creating large-scale microdroplets array with controlled curvature. The numerical aperture of the MLAs can be up to 0.26 and precisely tuned by adjusting the modification intensity or the droplet dose. The fabricated MLAs have high-quality surface with subnanometer roughness and allow for record-high resolution imaging up to equivalently 10,328 ppi, as we demonstrated. This study shows a cost-effective roadmap for mass-production of high-performance MLAs, which may find applications in the rapid proliferating integral imaging industry and high-resolution display.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-12
·
IF 17.694
Qin Limei,Gan Jie,Niu Dechao,Cao Yueqiang,Duan Xuezhi,Qin Xing,Zhang Hao,Jiang Zheng,Jiang Yongjun,Dai Sheng,Li Yongsheng,Shi Jianlin
Pursuing and developing effective methodologies to construct highly active catalytic sites to maximize the atomic and energy efficiency by material engineering are attractive. Relative to the tremendous researches of carbon-based single atom systems, the construction of bio-applicable single atom materials is still in its infancy. Herein, we propose a facile and general interfacial-confined coordination strategy to construct high-quality single-atom nanotherapeutic agent with Fe single atoms being anchored on defective carbon dots confined in a biocompatible mesoporous silica nanoreactor. Furthermore, the efficient energy conversion capability of silica-based Fe single atoms system has been demonstrated on the basis of the exogenous physical photo irradiation and endogenous biochemical reactive oxygen species stimulus in the confined mesoporous network. More importantly, the highest photothermal conversion efficiency with the mechanism of increased electron density and narrow bandgap of this single atom structure in defective carbon was proposed by the theoretical DFT calculations. The present methodology provides a scientific paradigm to design and develop versatile single atom nanotherapeutics with adjustable metal components and tune the corresponding reactions for safe and efficient tumor therapeutic strategy.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Liu Jing-Yuan,Chen Ling,Wu Li-Ming
The argyrodite Ag 9 GaSe 6 is a newly recognized high-efficiency thermoelectric material with an ultralow thermal conductivity; however, liquid-like Ag atoms are believed to cause poor stability and performance irreproducibility, which was evidenced even after the 1 st measurement run. Herein, we demonstrate the abovementioned instability and irreproducibility are caused by standard thermoelectric sample hot-pressing procedure, during which high pressure promotes the 3-fold-coordinated Ag atoms migrate to 4-fold-coordinated sites with higher-chemical potentials. Such instability can be eliminated by a simple annealing treatment, driving the metastable Ag atoms back to the original sites with lower-chemical potentials as revealed by the valence band X-ray photoelectron chemical potential spectra and single crystal X-ray diffraction data. Furthermore, the hot-pressed-annealed samples exhibit great stability and TE property repeatability. Such a stability and repeatability has never been reported before. This discovery will give liquid-like materials great application potential.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-7
·
IF 17.694
Li Jie,Liu Yubing,Ma Wenqi,Fei Teng,He Chunlin,Pang Siping
The design and synthesis of novel energetic compounds with integrated properties of high density, high energy, good thermal stability and sensitivities is particularly challenging due to the inherent contradiction between energy and safety for energetic compounds. In this study, a novel structure of 4-amino-7,8-dinitropyrazolo-[5,1- d ] [1,2,3,5]-tetrazine 2-oxide (BITE-101) is designed and synthesized in three steps. With the help of the complementary advantages of different explosophoric groups and diverse weak interactions, BITE-101 is superior to the benchmark explosive HMX in all respects, including higher density of 1.957 g·cm −3 , highest decomposition temperature of 295 °C (onset) among CHON-based high explosives to date and superior detonation velocity and pressure ( D : 9314 m·s −1 , P : 39.3 GPa), impact and friction sensitivities ( IS : 18 J, FS : 128 N), thereby showing great potential for practical application as replacement for HMX, the most powerful military explosive in current use.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-13
·
IF 17.694
Yao Mengmeng,Wei Zhijian,Li Junjin,Guo Zhicheng,Yan Zhuojun,Sun Xia,Yu Qingyu,Wu Xiaojun,Yu Chaojie,Yao Fanglian,Feng Shiqing,Zhang Hong,Li Junjie
Zwitterionic hydrogels exhibit eminent nonfouling and hemocompatibility. Several key challenges hinder their application as coating materials for blood-contacting biomedical devices, including weak mechanical strength and low adhesion to the substrate. Here, we report a poly(carboxybetaine) microgel reinforced poly(sulfobetaine) (pCBM/pSB) pure zwitterionic hydrogel with excellent mechanical robustness and anti-swelling properties. The pCBM/pSB hydrogel coating was bonded to the PVC substrate via the entanglement network between the pSB and PVC chain. Moreover, the pCBM/pSB hydrogel coating can maintain favorable stability even after 21 d PBS shearing, 0.5 h strong water flushing, 1000 underwater bends, and 100 sandpaper abrasions. Notably, the pCBM/pSB hydrogel coated PVC tubing can not only mitigate the foreign body response but also prevent thrombus formation ex vivo in rats and rabbits blood circulation without anticoagulants. This work provides new insights to guide the design of pure zwitterionic hydrogel coatings for biomedical devices.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-8
·
IF 17.694
Chen Liang,Deng Shiqing,Liu Hui,Wu Jie,Qi He,Chen Jun
Next-generation advanced high/pulsed power capacitors rely heavily on dielectric ceramics with high energy storage performance. However, thus far, the huge challenge of realizing ultrahigh recoverable energy storage density ( W rec ) accompanied by ultrahigh efficiency ( η ) still existed and has become a key bottleneck restricting the development of dielectric materials in cutting-edge energy storage applications. Here, we propose a high-entropy strategy to design “local polymorphic distortion” including rhombohedral-orthorhombic-tetragonal-cubic multiphase nanoclusters and random oxygen octahedral tilt, resulting in ultrasmall polar nanoregions, an enhanced breakdown electric field, and delayed polarization saturation. A giant W rec ~10.06 J cm −3 is realized in lead-free relaxor ferroelectrics, especially with an ultrahigh η ~90.8%, showing breakthrough progress in the comprehensive energy storage performance for lead-free bulk ceramics. This work opens up an effective avenue to design dielectric materials with ultrahigh comprehensive energy storage performance to meet the demanding requirements of advanced energy storage applications.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-15
·
IF 17.694
Liu Ziwei,Wu Jingning,Cai Chen,Yang Bo,Qi Zhi-mei
Optical techniques for visualization and quantification of chemical and biological analytes are always highly desirable. Here we show a hyperspectral surface plasmon resonance microscopy (HSPRM) system that uses a hyperspectral microscope to analyze the selected area of SPR image produced by a prism-based spectral SPR sensor. The HSPRM system enables monochromatic and polychromatic SPR imaging and single-pixel spectral SPR sensing, as well as two-dimensional quantification of thin films with the measured resonance-wavelength images. We performed pixel-by-pixel calibration of the incident angle to remove pixel-to-pixel differences in SPR sensitivity, and demonstrated the HSPRM’s capabilities by using it to quantify monolayer graphene thickness distribution, inhomogeneous protein adsorption and single-cell adhesion. The HSPRM system has a wide spectral range from 400 nm to 1000 nm, an optional field of view from 0.884 mm 2 to 0.003 mm 2 and a high lateral resolution of 1.2 μm, demonstrating an innovative breakthrough in SPR sensor technology.
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高影响因子
Nature Protocols
·
2022
·Vol. 17
·期 10
·2240-2274
·
IF 17.021
Zhao Xiao,Zhao Ruifang,Nie Guangjun
Here we present a protocol for the construction and use of two types of nanocarrier based on bacterial membrane materials for cancer vaccine delivery. Cancer vaccines induce tumor regression through triggering the specific T-cell responses against tumor neoantigens, a process that can be enhanced by nanocarrier delivery. Inspired by the body’s natural immune defenses against bacterial invasion, we have developed two different types of nanocarrier based on bacterial membrane materials, which employ genetically engineered outer-membrane vesicles (OMVs), or hybrid membrane vesicles containing bacterial cytoplasmic membrane, respectively. The OMV-based nanocarriers can rapidly display different tumor antigens through the surface modified Plug-and-Display system, suitable for customized cancer vaccines when the tumor neoantigens can be identified. The hybrid membrane-based nanocarriers are prepared through fusion of the bacterial cytoplasmic membrane and the primary tumor cell membrane from surgically removed tumor tissues, possessing unique advantages as personalized cancer vaccines when the neoantigens are not readily available. Compared with chemically synthesized nanocarriers such as liposomes and polymer without intrinsic adjuvant properties, owing to the large amounts of pathogen-associated molecular patterns, the two nanocarriers can activate the antigen-presenting cells while delivering multiple antigens, thus inducing effective antigen presentation and robust adaptive immune activation. Excluding bacterial culture and tumor tissue collection, the preparation of OMV- and hybrid membrane-based nanocarriers takes ~8 h and 10 h for tumor vaccine construction, respectively. We also detail how to use these nanocarriers to create cancer nanovaccines and evaluate their immunostimulatory and antitumor effects.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2024
·Vol. 53
·期 7
·3490-3502
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IF 2.2
Shao Zhongjie,Liu Yaning,Yang Da,Li Longfei,Xia Yang,Zhang Lihui,Tong Bo,Wang Bingjia,Zhao Yong,Xiao Zhen
Carbon-based conductive polymer composites (CPCs) have significant potential for fabricating low-cost and high-performance flexible electric heating films in deicing applications. However, the inferior high-temperature resistance and low heating power density seriously restrict their large-scale commercial application. Herein, a series of polyimide (PI)/carbon black (CB) composite electrothermal films with excellent high-temperature stability and high-power density are prepared by a simple slurry coating method. With successfully introducing the high-temperature resistance and high mechanical strength PI as polymer matrix, the PI/CB composite electrothermal films with a low percolation threshold of 10.8% have a broad operating temperature ranging from 40°C to 270°C under low applied voltages (< 60 V) at room temperature. Impressively, these PI/CB composite electrothermal films with a uniform thin thickness of 45 μm exhibit high operating temperature (> 200°C), rapid heating response speed (< 10 s), remarkable long-term working stability, and superior low-temperature operating reliability even at −30°C. The simulated deicing experiment indicates that the PI/CB composite electrothermal film dislodges an ice cube (thickness = 10 mm) within 280 s. This work not only provides a universal strategy for the design and fabrication of high-operating-temperature CPCs, but also verifies the great potential for use in deicing applications. Graphical Abstract
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高影响因子
ENVIRONMENTAL MONITORING AND ASSESSMENT
·
2024
·Vol. 196
·期 9
·1-12
·
IF 2.9
Ni Zifan,Chen Xuehai,Cui Min,Li Jia
The small particle size of nanoplastics allows them to migrate through soil and make them highly bioavailable, posing a potential threat to groundwater. Measures are urgently needed to reduce the migration of nanoplastics in soil. However, there is limited research available on this topic. In this study, two types of iron-modified biochar (magnetic corncob biochar (MCCBC) and magnetic walnut shell biochar (MWSBC)) were selected and their effects on the transport of polyvinyl chloride nanoplastics (PVC-NPs) in natural sandy soil columns under different ionic types and strengths were investigated. The results show that the transport of PVC-NPs in single sandy soil columns was rapid and efficient, with the estimated breakthrough rate of 85.10%. However, the presence of MCCBC and MWSBC (0.5%, w/w) significantly inhibited the transport of PVC-NPs in sandy soil columns ( p < 0.05), and MCCBC had a stronger inhibitory effect on the transport of PVC-NPs than MWSBC. This can be attributed to the fact that the adsorption of PVC-NPs on adsorbents followed the order as: MCCBC > MWSBC > sandy soil. The retention of PVC-NPs by MCCBC and MWSBC is determined by ionic type and ionic strength. The presence of coexisting ions enhanced the inhibitory effect of iron-modified biochar on the transport of PVC-NPs, with the following order: Ca 2+ > SO2- 4 > Cl − > NO- 3. The inhibitory effect of MCCBC and MWSBC on the transport of PVC-NPs in soil columns increased with increasing ionic strengths. Furthermore, MCCBC and MWSBC inhibited the migration of PVC-NPs in a rainwater-soil system. The mechanisms by which MCCBC and MWSBC affect the transport of PVC-NPs in soil columns were considered to enhancing adsorption and decreasing soil pore volume. The results provide new insights into the management of soil nanoplastic pollution.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·
IF 3.5
Zhang Tongwei,Qin Huijie,Bao Lihong,Dang Bo,Li Jianxi
This paper introduces a novel hybrid material, MoS 2 @Ag@PA, with a core–shell structure aimed at improving the fire safety and critical properties of ethylene vinyl acetate (EVA). The incorporation of 2% of this hybrid material results in a remarkable enhancement in both thermal conductivity and tensile strength of EVA composites, increasing by 52.4% and 22.6%, respectively. Furthermore, the inclusion of 2% of this material leads to a significant reduction in the peak of heat release rate, total heat release, and total smoke production of the EVA composites by 36.2%, 28.1%, and 29.7%, respectively, compared to pure EVA. This indicates a substantial improvement in fire safety, mechanical properties, and thermal conductivity of the EVA composites. The enhanced flame retardancy of the EVA composites is primarily attributed to the synergistic effect of various substances within the hybrid material. Therefore, the design of these hybrids presents a promising approach to enhance the overall performance of EVA.
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高影响因子
危险品化学品经营许可证（带存储）