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Recent advances in bacterial outer membrane vesicles:Effects on the immune system,mechanisms and their usage for tumor treatment

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Journal of Pharmaceutical Analysis 2024年第12期14卷 1790-1801页

作者： Shuo Xiang Qiufang Yao Arshad Khan Dong Wang Center for AIE Research Shenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhenGuangdong518060China College of Advanced Materials Engineering Jiaxing Nanhu UniversityJiaxingZhejiang314001China Nanomedicine Department King Abdullah International Medical Research Center(KAIMRC)King Saud bin Abdulaziz University for Health SciencesMinistry of National Guard Health AffairsRiyadh11426Saudi Arabia

Tumor treatment remains a significant medical challenge,with many traditional therapies causing notable side *** research has led to the development of immunotherapy,which offers numerous *** inherently possess motility,allowing them to preferentially colonize tumors and modulate the tumor immune microenvironment,thus influencing the efficacy of *** outer membrane vesicles(OMVs)secreted by gram-negative bacteria are nanoscale lipid bilayer structures rich in bacterial antigens,pathogen-associated molecular patterns(PAMPs),various proteins,and vesicle *** features allow OMVs to stimulate immune system activation,generate immune responses,and serve as efficient drug delivery *** dual capability enhances the effectiveness of immunotherapy combined with chemotherapy or phototherapy,thereby improving anticancer drug *** research has concentrated on engineering OMVs to enhance production yield,minimize cytotoxicity,and improve the safety and efficacy of ***,OMVs hold great promise for applications in tumor immunotherapy,tumor vaccine development,and drug *** article provides an overview of the structural composition and immune mechanisms of OMVs,details various OMVs modification strategies,and reviews the progress in using OMVs for tumor treatment and their anti-tumor ***,it discusses the challenges faced in translating OMV-based anti-tumor therapies into clinical practice,aiming to provide a comprehensive understanding of OMVs'potential for in-depth research and clinical application.

关键词： Tumor treatment Outer membrane vesicles Immunotherapy Drug delivery

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Porous hybrid scaffold strategy for the realization of lightweight,highly efficient microwave absorbing materials

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Journal of Materials science & technology 2022年第34期129卷 215-222页

作者： Meng Zhu Yuting Lei Heng Wu Luo Kong Hailong Xu Xuanxuan Yan Yongjian Xu Lei Dai Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper Based Functional MaterialsChina National Light IndustryNational Demonstration Center for Experimental Light Chemistry Engineering EducationShaanxi University of Science and TechnologyXi’an 710021China School of Engineering Computer and Mathematics SciencesAuckland University of Technology55 Wellesley Street EastAucklandNew Zealand School of Materials Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China Laboratory for Advanced Interfacial Materials and Devices Research Center for Smart Wearable TechnologyInstitute of Textiles and Clothingthe Hong Kong Polytechnic UniversityHong Kong SAR 999077China

Exploring an advanced and efficient electromagnetic(EM) wave absorbing material by improving dielectric loss capacity and adjusting impendence matching is crucial yet challenging. Herein, the bacterial cellulose(BC) derived carbon aerogel(CA) with a robust nanofibrous network was used as a conductive loss scaffold to dissipate EM waves effectively, and the Zn O microparticles with excellent dielectric properties and low electrical conductivity were decorated on the scaffold to adjust dielectric parameters and impedance matching adequately. By using different zinc precursors, the tunable size and morphologies of Zn O crystals were obtained due to the growth rate of different crystallographic, including flowerlike, nanorod like, and cauliflower-like morphologies, which is beneficial to strong multiple reflections,intensive interfacial polarization, better impendence matching, as well as excellent maintenance of the hierarchical structure. Owing to the appropriate impendence matching and the considerable EM wave dissipation, the CA@ZnO composites achieve a superior EM absorbing performance with a broad effective absorbing bandwidth(whole X band) and a minimum reflection coefficient(-53.3 d B). This work paves a new way for developing lightweight and highly efficient EM absorbing materials comprising the carbon scaffold and semiconductor microparticles.

关键词： Carbon scaffold ZnO microparticles Morphologies Impedance matching Microwave absorption

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Growth Behavior of Rubrene Thin Films on Hexagonal Boron Nitride in the Early Stage

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Chinese Journal of Chemistry 2022年第11期40卷 1298-1304,I0002页

作者： Yujia Wei Di Xue Lianlian Ji Jie Lu Qi Wang Xingyu Jiang Yinghui Sun Zi Wang Lizhen Huang Lifeng Chi Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesCollaborative Innovation Center of Suzhou Nano Science and TechnologySoochow UniversitySuzhouJiangsu 215123China College of Energy Soochow Institute for Energy and Materials InnovationsKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhouJiangsu 215006China Gusu Laboratory of Materials SuzhouJiangsu 215123China

Two-dimensional materials,with an in-plane ordered and dangling-bonding-free surface,are ideal substrates for fabricating high-quality crystalline thin ***,we show a systematic study on the growth of a benchmark organic semiconductor,rubrene,on hexagonal boron nitride(h-BN)substrate via physical vapor deposition from the initial amorphous phase to the final crystalline phase;the role of temperature in such transition and the epitaxy relationship between rubrene and h-BN are *** the increase of substrate temperature,the critical thickness of amorphous-crystalline-transition decreases and the morphology of crystalline phase also evolves from porous to *** substrate temperature reaches>100℃,the critical thickness reduces to only 0.5 nm and a precise layer-by-layer growth from the very first layer is achieved,which is quite rare for rubrene growing on other *** high ordering can be attributed to the fine epitaxy relationship between rubrene films and the h-BN surface lattice,and this film demonstrates good charge transport ability with a p-type field-effect mobility of>1 cm^(2)·V^(-1)·s^(-1).

关键词： Thin films Crystal growth Organic thin film transistors 2D materials Molecular electronics

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Three-Dimensional Welded Mn_(1) Site Catalysts with nearly 100% Singlet Oxygen Fabrication for Contaminant Elimination

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Precision Chemistry 2023年第3期1卷 153-160页

作者： Xiao Ge Donghua Xie Rui-fen Cheng Wenxing Chen Cai Chen Fangyao Zhou Xiaozhi Wang Jie-jie Chen Guo-ping Sheng Yuen Wu The First Affiliated Hospital of USTC Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230026China School of Environmental Science and Engineering Yangzhou UniversityYangzhou 225000China CAS Key Laboratory of Urban Pollutants Conversion Department of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Dalian National Laboratory for Clean Energy Dalian 116023China

Reactive oxygen species(ROS)have a significant part in the elimination of recalcitrant organic pollutants and commonly coexist in one advanced oxidation *** is difficult for us to make clear the effect of the co-instantaneous generation of radicals and nonradicals,which would cover and obscure the transformation ***,a coordinate welding process is presented for fabricating accessible Mn1 site catalysts(Mn SSCs)in order to clarify the nonradical(singlet oxygen/^(1)O_(2))generated pathway and transformation in oxidative removal of *** Mn SSCs achieve nearly 100%^(1)O_(2) fabrication by activating peroxymonosulfate,which displays an excellent sulfamethoxazole elimination performance,super anti-anion interference,and extraordinary *** revealed by density functional theory calculations,the Mn SSCs with a special welded three-dimensional nanostructure could significantly boost the activation process by oxidizing the peroxymonosulfate at the interlayer of Mn SSCs and reducing dissolved oxygen on the surface of Mn *** design of Mn SSCs with a three-dimensional welded nanostructure might offer a potential approach for employing single site catalysts for environmental remediation.

关键词： single site catalysts nonradicals singlet oxygen three-dimensional welded nanostructure advanced oxidation

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Rationally engineered Co and N co-doped WS_(2) as bifunctional catalysts for pH-universal hydrogen evolution and oxidative dehydrogenation reactions

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Nano Research 2022年第3期15卷 1993-2002页

作者： Min Ling Na Li Binbin Jiang Renyong Tu Tao Wu Pingli Guan Yin Ye Weng-Chon(Max)Cheong Kaian Sun Shoujie Liu Konglin Wu Aijian Huang Xianwen Wei College of Chemistry and Materials Science Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education InstitutesKey Laboratory of Functional Molecular Solidsthe Ministry of EducationAnhui Normal UniversityWuhu 241002China School of Chemistry and Chemical Engineering Institute of Clean Energy and Advanced Nanocatalysis(iClean)Anhui Province Key Laboratory of Coal Clean Conversion and High Valued UtilizationAnhui University of TechnologyMaanshan 243002China School of Chemistry and Chemical Engineering Anhui Key Laboratory of Photoelectric-Magnetic Functional MaterialsAnqing Normal UniversityAnqing 246011China Department of Chemistry Tsinghua UniversityBeijing 100084China Department of Physics and Chemistry Faculty of Science and TechnologyUniversity of MacaoMacaoChina Chemistry and Chemical Engineering of Guangdong Laboratory Shantou 515063China School of Electronics Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054China

In the field of electrolysis of water,the design and synthesis of catalysts over a wide pH range have attracted extensive *** this paper,Co and N are co-introduced into the structural unit of tungsten disulfide(WS_(2)),and the hydrogen evolution reaction(HER)performances of different WS_(2)-based catalysts are theoretically predicted and systematically studied by density functional theory(DFT)*** the guidance of DFT calculations,an evaporation-pyrolysis strategy is applied to prepare Co and N co-doped WS_(2)(Co,N-WS_(2))flower-like nanosheets,which exhibits excellent HER performance over a wide pH *** addition,the DFT calculations show that the active sites in Co,N-WS_(2) have a good ability of hydrogen adsorption after the introduction of Co and N,suggesting that such a co-doping system will be an ideal catalyst for oxidative dehydrogenation(ODH).The following experiment results indeed evidence that the Co,N-WS_(2) catalyst displays a high activity in the ODH of 1,2,3,4-tetrahydroquinoline(4H-quinoline)and its ***,this work provides a good example for the rational design and accurate preparation of functional catalysts,which enables it possible to develop other efficient catalysts with multiple functions.

关键词： WS2 heteroatomic doping bifunctional catalyst density functional theory(DFT)calculation electrolysis of water

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dx2−y2-wave Bose metal induced by next-nearest-neighbor hopping anisotropy

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Physical Review B 2025年第13期111卷 134512-134512页

作者： Zhangkai Cao Jianyu Li Jiahao Su Tao Ying Ho-Kin Tang School of Science Harbin Institute of Technology Shenzhen 518055 China Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application Shenzhen 518055 China School of Physics Harbin Institute of Technology Harbin 150001 China

Superconductivity arises when electrons form Cooper pairs with phase coherence. In contrast, a lack of phase coherence in Cooper pairs can lead to an uncondensed metallic ground state known as the Bose metal state. In this paper, we investigate an attractively interacting fermionic system with nearest-neighbor hopping (t) and next-nearest-neighbor hopping (t′) anisotropy between two species of spins in a two-dimensional lattice. Utilizing the constrained path quantum Monte Carlo method, we demonstrate the existence of a dx2−y2-wave Cooper pair Bose metal (CPBM) phase with t′/t>0.7. The CPBM phase exhibits a domelike structure in the phase diagram of filling n∼0.65, with the maximal region around an optimal t′/t∼0.2, suggesting that an appropriate value of t′ facilitates the formation of the Bose metal. Furthermore, we find that a Bose metal formed by fermions with a closed Fermi surface confirms that the crucial condition for this exotic phenomenon is primarily the anisotropy of the Fermi surface rather than its topology. Our finding of the dx2−y2-wave CPBM demonstrates the same pairing symmetry as the pseudogap behavior in cuprates, and its experimental realization in ultracold atom systems is also feasible.

关键词： Anisotropy

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Morphology-controlled porphyrin nanocrystals with enhanced photocatalytic hydrogen production

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Nano Research 2022年第6期15卷 5719-5725页

作者： Ronghui Cao Jinghan Wang Yusen Li Jiajie Sun Feng Bai School of Physics and Electronics Henan UniversityKaifeng 475004China Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High-efficiency Display and Lighting TechnologySchool of Materials Science and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China Academy for Advanced Interdisciplinary Studies Henan UniversityKaifeng 475004China

Molecular self-assembly is a natured-inspired strategy to integrate individual functional molecules into supramolecular nanostructured materials through noncovalent bond interactions for solar to fuel ***,the design and engineering of the morphology,size,and orderly stacking of supramolecular nanostructures remain a great *** this study,regular porphyrin nanocrystals with different orderly stacked structures are synthesized through noncovalent self-assembly of Pt(II)meso-tetra(4-carboxyphenyl)porphine(PtTCPP),using surfactants with different *** synergy of noncovalent bond interactions between porphyrin molecules,and between porphyrin molecules and surfactants resulted in different molecular packing *** to the spatial ordering of PtTCPP molecules,the different nanocrystals exhibit both collective optical properties and morphology-dependent activities in photocatalytic hydrogen *** measurements of the photodeposition of dual cocatalysts showed that the photogenerated electrons and holes selectively aggregated at different active sites,revealing separation pathways and directional transfer of photogenerated electrons and holes in the *** study provides a new strategy to exert rational control over porphyrin self-assembly nanocrystals for highly efficient water splitting.

关键词： porphyrin self-assembly morphology-dependent photocatalytic activity directional transfer photogenerated electrons and holes

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A risk-based evaluation of safe distance for a hydrogen refueling station

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Process Safety Progress 2024年第3期43卷 478-493页

作者： Bai, Mingqi Du, Xin Li, Jianguo Shu, Chi-Min Feng, Wei Li, Bing Liu, Yi Qingdao China Qingdao China Qingdao China Department of Safety Health and Environmental Engineering National Yunlin University of Science and Technology Douliu Taiwan State Key Laboratory of Fluorinated Functional Membrane Materials Zibo China Shandong Dongyue Polymer Material Co. Ltd Zibo China National Engineering Research Center of Coal Gasification and Coal-Based Advanced Materials Zoucheng China

To ensure the safety of hydrogen refueling stations (HRSs) and protective targets in the surrounding area, this paper has introduced a risk-based safe distance assessment method for a 35MP HRSs, emphasizing the impact of the station's surrounding area. The findings indicate that the safe distance is determined by vapor cloud explosion (VCE) accident scenarios arising from pipeline leaks (compressor-hydrogen storage tanks) at 125 m. Therefore, a crucial focus should be placed on safeguarding and maintaining hydrogen pipelines. Furthermore, based on societal risk, the requirement of a 358-m safe distance specifies that the population gathering within this range should be © 2024 American Institute of Chemical Engineers.

关键词： Risk assessment

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Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N‑RGO for Boosting Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 517-532页

作者： Kaili Zhang Yuefeng Yan Zhen Wang Guansheng Ma Dechang Jia Xiaoxiao Huang Yu Zhou State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China MIIT Key Laboratory of Advanced Structural‑Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Developing effective strategies to regulate graphene’s conduction loss and polarization has become a key to expanding its application in the electromagnetic wave absorption(EMWA)*** on the unique energy band structure of graphene,regulating its bandgap and electrical properties by introducing heteroatoms is considered a feasible ***,metal-nitrogen doping reduced graphene oxide(M–N-RGO)was prepared by embedding a series of single metal atoms M–N_(4) sites(M=Mn,Fe,Co,Ni,Cu,Zn,Nb,Cd,and Sn)in RGO using an N-coordination atom-assisted *** composites had adjustable conductivity and polarization to optimize dielectric loss and impedance matching for efficient EMWA *** results showed that the minimum reflection loss(RL_(min))of Fe–N-RGO reaches−74.05 dB(2.0 mm)and the maximum effective absorption bandwidth(EAB_(max))is 7.05 GHz(1.89 mm)even with a low filler loading of only 1 wt%.Combined with X-ray absorption spectra(XAFS),atomic force microscopy,and density functional theory calculation analysis,the Fe–N_(4) can be used as the polarization center to increase dipole polarization,interface polarization and defect-induced polarization due to d-p orbital hybridization and structural ***,electron migration within the Fe further leads to conduction loss,thereby synergistically promoting energy *** study demonstrates the effectiveness of metal-nitrogen doping in regulating the graphene′s dielectric properties,which provides an important basis for further investigation of the loss mechanism.

关键词： Electromagnetic wave absorption Fe-N-RGO Dipole polarization Conduction loss Impedance matching

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High-Efficiency Photo-Induced Charge Transfer for SERS Sensing in N-Doped 3D-Graphene on Si Heterojunction

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Energy & Environmental Materials 2024年第2期7卷 268-276页

作者： Guanglin Zhang Jie Sun Genwang Wei Shan Zhang Zhengyi He Huijuan Wu Bingkun Wang Siwei Yang Guqiao Ding Zhiduo Liu Zhiwen Jin Caichao Ye Gang Wang Department of Microelectronic Science and Engineering School of Physical Science and TechnologyNingbo UniversityNingbo 315211China Department of Biochemistry and Molecular Biology School of Basic Medical SciencesShenzhen UniversityShenzhen 518071China Academy for Advanced Interdisciplinary Studies&Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Computational Science and Material DesignSouthern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Physical Science and Technology&Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou UniversityLanzhou 730000China

Nitrogen-doped three-dimensional graphene(N-doped 3D-graphene)is a graphene derivative with excellent adsorption capacity,large specific surface area,high porosity,and optoelectronic ***,N-doped 3D-graphene/Si heterojunctions were grown in situ directly on silicon(Si)substrates via plasma-assisted chemical vapor deposition(PACVD),which is promising for surface-enhanced Raman scattering(SERS)substrates *** analyses of theoretical simulation,incorporating N atoms in 3D-graphene are beneficial to increase the electronic state density of the system and enhance the charge transfer between the substrate and the target *** enhancement of the optical and electric fields benefits from the stronger light-matter interaction improved by the natural nano-resonator structure of N-doped *** as-prepared SERS substrates based on N-doped 3D-graphene/Si heterojunctions achieve ultra-low detection for various molecules:10^(-8)M for methylene blue(MB)and 10^(-9)M for crystal violet(CRV)with rhodamine(R6G)of 10^(10)*** practical detected,10^(-8)M thiram was precisely detected in apple peel *** results indicate that N-doped 3D-graphene/Si heterojunctions based-SERS substrates have promising applications in low-concentration molecular detection and food safety.

关键词： charge transfer DFT simulation N-doped 3D-graphene SERS Thiram detection

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