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Nano-structuration of porous frameworks and their dimensionality driven applications 认领 引用 被引量：1
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作者 Himadri Sekhar Sasmal Rahul Banerjee 《Nano Materials Science》 EI CAS CSCD 2026年第3期499-517,共19页
Advancements in nanostructures and nanomaterials have significantly impacted both academic research and industry.Notable nanomaterials include carbon materials,polymeric nanoparticles,dendrimers,metal and metal oxide ... Advancements in nanostructures and nanomaterials have significantly impacted both academic research and industry.Notable nanomaterials include carbon materials,polymeric nanoparticles,dendrimers,metal and metal oxide nanoparticles,liposomes,zeolites,Metal-Organic Frameworks(MOFs),MXenes,molecular cages,and covalent organic frameworks(COFs).Their unique structures and properties make them suitable for diverse applications.Nano-structuration,which generates various nano-architectures with unique characteristics,influences the physical,chemical,and electrical properties of nanomaterials.This process is essential for achieving desired properties and maximizing application potential.Carbon materials,MOFs,and other nanomaterials have been classified based on their architectural dimensionality and the effects of nano-structuration on their applications.However,comprehensive studies on the synthesis and fabrication of COF nanostructures with desired architectures and dimensionalities are lacking.This review discusses the library of available nanostructures based on dimensionality,factors influencing nano-structuration,and the potential applications of nanomaterials like carbon materials,MOFs,and organic cage molecules.Additionally,it attempts to classify COFs based on architectural variation,specific synthetic strategies,and other factors influencing nano-structuration and applications.The aim is to develop novel synthetic methods for COF architectures across all dimensions,utilizing their morphological diversity for targeted applications based on their structure-property relationship,and to explore new methodologies for interconverting COF architectures through covalent and supramolecular self-assembly. 展开更多
关键词 carbon materialspolymeric nanoparticles dendrimersmetal metal oxide nanoparticles liposomes zeolitesmetal organic nano structuration covalent organic frameworks cofs their polymeric nanoparticles metal nanoparticles dimensionality porous frameworks dendrimers
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Crystalline porous organic frameworks:Emerging platforms for enzyme immobilization in biomedical applications 认领 引用
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作者 Xueting Hu Lijia Zhao +1 位作者 Tingting Liao Cheng-Peng Li 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2026年第2期135-151,共17页
Crystalline porous organic frameworks(CPOFs),with their highly ordered pores and tunable organic structures,have shown immense promise as platforms for enzyme immobilization.However,research on enzyme@CPOF composites,... Crystalline porous organic frameworks(CPOFs),with their highly ordered pores and tunable organic structures,have shown immense promise as platforms for enzyme immobilization.However,research on enzyme@CPOF composites,particularly for biomedical applications,is still in its early stages and lacks comprehensive and systematic review.This article provides a thorough overview of recent advances in the rational design,synthesis,and application of enzyme@CPOF biocomposites.Emphasis is placed on immobilization strategies and the structure-performance relationships revealed through molecular-level investigations.Furthermore,we highlight emerging applications in biocatalysis and biomedical engineering,and discuss persistent challenges and future directions to advance CPOFs as versatile,high-performance substrates for enzyme immobilization. 展开更多
关键词 Crystalline porous organic frameworks Hydrogen-bonded organic frameworks Covalent organic frameworks Enzyme Catalyst Biomedicine application
Metal-organic frameworks for sustainable recovery of precious metals:Advances in synthesis,applications,and multiscale mechanisms 认领 引用 被引量：2
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作者 Baocheng Zhou Guo Lin +3 位作者 Shixing Wang Tu Hu Yunfei An Libo Zhang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第2期417-445,共29页
The recovery of precious metals(PMs)from secondary resources is critical for addressing global supply-chain vulnerabilities and sustainable resource utilization.This review systematically examines the transformative p... The recovery of precious metals(PMs)from secondary resources is critical for addressing global supply-chain vulnerabilities and sustainable resource utilization.This review systematically examines the transformative potential of metal-organic frameworks(MOFs)as next-generation adsorbents for PM recovery,focusing on their synthesis,functionalization,and multiscale adsorption mechanisms.We critically analyze conventional pyrometallurgical and hydrometallurgical methods and highlight their limitations in terms of selectivity,energy consumption,and secondary pollution.In contrast,MOFs offer tunable porosity,abundant active sites,and tunable surface chemistry,enabling efficient PM capture via synergistic physical and chemical adsorption.Advanced modification techniques,including direct synthesis and post-synthetic modification,are reviewed to propose strategies for enhancing the adsorption kinetics and selectivity for Au,Ag,Pt,and Pd.Key structure-property relationships are established through multiscale characterization and thermodynamic models,revealing the critical roles of hierarchical porosity,soft donor atoms,and framework stability.Industrial challenges,such as aqueous stability and scalability,are addressed via Zr-O bond strengthening,hydrophobic functionalization,and support immobilization.This study consolidates the experimental and theoretical advances in MOF-based PM recovery and provides a roadmap for translating laboratory innovations into practical applications within the circular-economy framework. 展开更多
关键词 metal-organic frameworks precious metal recovery functionalization adsorption mechanisms circular economy
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Three-dimensional supramolecular polymer frameworks with precisely tunable and large apertures for enzyme encapsulation 认领 引用 被引量：2
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作者 Runtan Gao Yang Zong +2 位作者 Tingting Li Na Liu Zongquan Wu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期361-367,共7页
Three-dimensional supramolecular organic frameworks with precisely tunable pore sizes are highly demanded for a wide range of applications,e.g.,encapsulating enzymes to enhance their stability,activity,and reusability... Three-dimensional supramolecular organic frameworks with precisely tunable pore sizes are highly demanded for a wide range of applications,e.g.,encapsulating enzymes to enhance their stability,activity,and reusability.However,precise control and tune the pore size of such frameworks still remains a significant challenge to date.In this study,we constructed supramolecular polymer frameworks using rigid tetrahedral star polyisocyanides with tunable length and sufficiently narrow distribution as building block.First,a series of tetrahedral four-arm star polyisocyanides with controlled chain lengths and narrow molecular weight distributions was prepared via the Pd(Ⅱ)-catalyzed living isocyanide polymerization.Then 2-ureido-4[1H]-pyrimidinone(Upy) unit was installed onto each chain-end of polyisocyanide arms via post-polymerization functionalization.Leveraging the supramolecular hydrogen bonding interactions between the terminal Upy units,well-ordered supramolecular polymer frameworks were readily obtained.Notably,the pore size was dependent on the chain length of the polyisocyanide arms.Precisely control the chain length of polyisocyanide arms,supramolecular polymer frameworks with pore sizes ranging from 5.06 nm to 9.72 nm were achieved.These frameworks,with tunable and large pore apertures,demonstrated exceptional capabilities in encapsulating enzymes of different sizes,such as lipase(TL),horseradish peroxidase(HRP),and glucose oxidase(GOx).The encapsulated enzymes exhibited significantly enhanced catalytic activity and durability.Moreover,the frameworks' tunable and large pore apertures facilitated the co-encapsulation of multiple enzymes,enabling efficient dual-enzyme cascade reactions. 展开更多
关键词 Supramolecular organic frameworks Living polymerization Supramolecular self-assembly Polyisocyanide Enzyme encapsulation
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Borane cage hybrid supramolecular metal-organic frameworks(BSFs):Design,synthesis and gas separation performance 认领 引用
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作者 Chengye Lou Yu Hu +2 位作者 Yunjia Jiang Lingyao Wang Yuanbin Zhang 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2026年第2期105-118,共14页
Boron cage hybrid supramolecular metal-organic frameworks(BSFs)are a subclass of anion-pillared MOFs(APMOFs).This type of materials are formed through the self-assembly of borane cage anions,metal cations and organic ... Boron cage hybrid supramolecular metal-organic frameworks(BSFs)are a subclass of anion-pillared MOFs(APMOFs).This type of materials are formed through the self-assembly of borane cage anions,metal cations and organic ligands.They possess dense arrays of anionic binding sites within the one-dimensional pores,which can interact selectively with hydrocarbon molecules via B-H…H-C dihydrogen bonds.Therefore,the design of BSFs with appropriate pore properties holds significant potential for achieving highly efficient hydrocarbon separa-tion.However,the current research on BSFs is still in its infancy when compared to other types of APMOFs.Due to the weak coordination ability of borane anions,the directional assembly of BSFs remains challenging.This review article targets to provide an overview of the development history of BSFs,and introduce in detail their design strategies and synthesis methods.In addition,this review will elaborate on the characteristics of BSFs and discuss their gas separation performance.Finally,the current challenges faced by BSFs are summarized,and reasonable suggestions for the future design,development,and industrial application of BSFs are put forward. 展开更多
关键词 Metal-organic frameworks Boron clusters Supramolecular frameworks Gas separation Host-guest interactions
Fabrication of S-scheme heterojunction between covalent organic frameworks and Ni-ZIF-8 and its photocatalytic hydrogen production performance 认领 引用
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作者 Xuan Zhang Lin Zhou +2 位作者 Teng Yan Xiaohu Zhang Hao Chen 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第1期200-212,共13页
Covalent organic frameworks(COFs)have garnered significant attention in photocatalysis owing to their exceptional light absorption capacities,tunable band structures,and high specific surface areas.However,the rapid r... Covalent organic frameworks(COFs)have garnered significant attention in photocatalysis owing to their exceptional light absorption capacities,tunable band structures,and high specific surface areas.However,the rapid recombination of photogenerated carriers in COFs remains a critical bottleneck limiting their practical application.In this study,a novel S-scheme heterojunction was constructed by integrating a Ni-doped zeolitic imidazolate framework-8(Ni-ZIF-8)with Py-COF,effectively addressing this challenge.Through precisely controlled synthesis,the heterojunction achieves efficient and stable material combination,which not only significantly enhances photogenerated charge separation efficiency and markedly reduces recombination rates,but also demonstrates outstanding catalytic performance(162.77 mmol·h-1·g-1)and cycling stability in hydrogen evolution reaction.This study provides new insights into the design of efficient ZIF/COF-based heterojunction catalysts.This study provides an important theoretical foundation for the design of high-performance photocatalytic materials with broad application prospects. 展开更多
关键词 Covalent organic frameworks Ni-doped zeolitic imidazolate framework S-scheme heterojunction Photocatalytic Hydrogen production
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A dual-signal amplification strategy combining DNA-functionalized covalent organic frameworks and CRISPR-Cas12a for early detection of ovarian cancer biomarkers 认领 引用
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作者 Yuzhen Wang Wenxiu Long +3 位作者 Bangshun He Mengqiu Xiong Jingjing Li Yanfeng Gao 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第6期772-778,共7页
Ovarian cancer is among the deadliest cancers,with the highest mortality rate among gynecological cancers;thus,highly sensitive early diagnosis is of paramount importance.In this study,we developed an innovative biose... Ovarian cancer is among the deadliest cancers,with the highest mortality rate among gynecological cancers;thus,highly sensitive early diagnosis is of paramount importance.In this study,we developed an innovative biosensor that integrates DNA-functionalized covalent organic frameworks with CRISPR-Cas12a technology for dual-signal amplification to achieve ultra-sensitive detection of ovarian cancer biomarkers.The COFs were co-functionalized with aptamers specific to target protein biomarkers and a larger number of activators.Upon recognition and binding to target proteins,the activators anchored on the COF surface become accessible in the detection system,converting low-abundance protein signals into amplified nucleic acid signals,which represents the first stage of signal amplification.These activators subsequently trigger the trans-cleavage activity of CRISPR-Cas12a,leading to the cleavage of fluorophore–quencher reporters and resulting in further amplified fluorescence output,constituting the second stage of amplification.This dual-signal amplification strategy,integrated with a microfluidic chip,enabled the sensitive detection of CA125 and HE4,with detection limits as low as 0.001 U/mL and 0.2 pg/mL,respectively,providing a robust,accurate,and scalable platform for ovarian cancer diagnostics and demonstrating potential applications in clinical bioanalysis and diagnosis. 展开更多
关键词 Microfluidics Covalent organic frameworks CRISPR-Cas12a Signal amplification CA125 HE4
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Efficient H2O2 photosynthesis through linker engineering of benzotrithiophene-based covalent organic frameworks 认领 引用
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作者 Ke-Hui Xie Cong-Xue Liu +3 位作者 Yan Geng Jing-Lan Kan Guang-Bo Wang Yu-Bin Dong 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第4期271-281,共11页
The photogenerated carrier separation efficiency and material wettability are of critical importance for aqueous-phase photocatalytic reactions,achieving both simultaneously poses a significant challenge owing to the ... The photogenerated carrier separation efficiency and material wettability are of critical importance for aqueous-phase photocatalytic reactions,achieving both simultaneously poses a significant challenge owing to the inherent interdependencies and trade-offs involved.In this work,a series of isoreticular benzotrithiophene-based covalent organic frameworks(COFs)were successfully synthesized by incorporating diverse hydrophobic and hydrophilic functional groups(-OH,-F,-H)onto their skeletons,thereby modulating their characteristic charge separation and transport as well as their wettability,and systematically studied their photocatalytic H2O2 production performance in O2-saturated water under visible-light irradiation.Remarkably,the synthesized hydrophilic BTT-BD-OH-COF demonstrates the highest H2O2 production rate of 6105μmol g-1 h-1 in the absence of any sacrificial agent in pure water,attributed to its extended light absorption range,improved hydrophilicity,and enhanced photo-induced charge separation and transport efficiency.Combined experimental results and the density functional theory calculations elucidate the reaction mechanism,revealing the overall H2O2 photosynthesis via both oxygen reduction reaction and water oxidation reaction dual pathways.This study demonstrates that functional-group-mediated linker engineering is a powerful approach for significantly enhancing the efficiency of COF-based photocatalysts. 展开更多
关键词 Covalent organic frameworks Photocatalysis Hydrogen peroxide Linker engineering Benzotrithiophene
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Structural engineering of metal–organic frameworks for enhanced electrocatalytic urea oxidation reaction:Mechanistic insights and electronic modulation strategies 认领 引用
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作者 Bin Hu Kun Chen +5 位作者 Bingbing Shen Xiaohong Shang Fenghe Duan Chuanpan Guo Shuai Zhang Zhihong Zhang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第2期469-490,共22页
Electrocatalytic urea oxidation reaction(UOR)not only provides innovative solutions for clean energy development and environmental pollution control,but also promotes sustainable development through efficient resource... Electrocatalytic urea oxidation reaction(UOR)not only provides innovative solutions for clean energy development and environmental pollution control,but also promotes sustainable development through efficient resource recycling.Its technological breakthroughs hold significant implications for achieving carbon neutrality goals and establishing a green energy system.Benefiting from their high specific surface area,tunable pore structures,and modifiable electronic properties,diverse metal–organic frameworks(MOFs)-based UOR electrocatalysts have been exploited,such as pristine Ni-,Fe-,and Cu-based monometallic,bimetallic,or multiple metallic MOFs,MOFs-based composites,and MOFsrelated derivatives.The porous framework exposes abundant active sites and enhances mass transfer,while the synergy between metal nodes and organic ligands optimizes electronic configurations to reduce reaction energy barriers.By integrating conductive substrates or constructing heterostructures,catalytic activity and stability are significantly enhanced.Varieties of strategies have been performed to further decrease the overpotential and accelerate the kinetics towards the UOR,such as modulating charge density and d-band center positions of active sites through metal–ligand coordination,inducing charge redistribution and enhancing electron transport via heterostructure interfaces,breaking electronic symmetry and boosting surface reactivity through defect engineering,adjusting atomic spacing and electronic band structures via strain engineering,reinforcing charge transfer and stabilizing active sites using conductive substrates,and enabling precise design through dynamic in-situ reconstruction and theory-guided optimization.This review explores the latest significant advances in the design and synthesis of MOFs-based UOR catalysts.Beyond highlighting recent breakthroughs in UOR catalysts,this review critically emphasizes the design strategies for urea electrolysis in the field of energy conversion and systematically addresses current challenges.Furthermore,this comprehensive research approach proposes forward-looking strategies for future research directions in energy conversion and carbon neutrality to advance the development of this emerging field. 展开更多
关键词 Electrocatalytic urea oxidation Metal-organic frameworks Regulation of electron structures Hydrogen production Rare earths
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Metal-organic frameworks for clean water 认领 引用
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作者 Xiao-Hong Yi Hong-Yu Chu +35 位作者 Chao-Yang Wang Hang Ren Li-hong Zhou Yujie Zhao Fu-Xue Wang Hao Du Yixuan Zhai Tao Xia Shaohua Guo Xiaoning Wang Yunlong Wang Qian Wen Ge Shen Meng Yang Yu-Hang Li Mingjia Xu Xiaoyuan Zhang Hao Wang Xudong Zhao Yifei Sun Yi-Lin Liu Qingyi Zeng Yuying Deng Qi Wang Xiaodong Zhang Jie Li Ning Liu Chuanxi Yang Jiansheng Li Anping Wang Xun Wang Xuchun Qiu Haodong Ji Xuedong Du Jiaxing Wu Chong-Chen Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期18-81,共64页
This review comprehensively summarizes the latest advancements in the synthesis and multifaceted applications of metal-organic frameworks(MOFs)for clean water.It systematically explores scalable synthesis methods,from... This review comprehensively summarizes the latest advancements in the synthesis and multifaceted applications of metal-organic frameworks(MOFs)for clean water.It systematically explores scalable synthesis methods,from solvothermal to green mechanochemical routes,and highlights the innovative transformation of waste into high-value MOFs.The article delves into the diverse functionalities of MOFs in water remediation,including the adsorptive and catalytic removal of heavy metals,organic pollutants,pharmaceuticals,PFASs,and microano-plastics.Applications in sensing,radionuclide separation,oil-water separation,and advanced membrane technologies are also detailed.Furthermore,emerging roles in water capture,algal inhibition and resource recovery are discussed.Finally,the review provides a critical perspective on future challenges and opportunities,emphasizing sustainable synthesis,life-cycle assessment,and the integration of AI for the intelligent design of next-generation MOFs,paving the way for their transition from laboratory research to real-world water treatment solutions. 展开更多
关键词 Metal-organic frameworks Adsorption Advanced oxidation process Sensing detection Clean water Versatile applications
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Facile and scale-up synthesis of cyano-functionalized covalent organic frameworks for selective gold recovery 认领 引用
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作者 Bo Li Yuanzhe Cheng +8 位作者 Xuyang Ma Dongxu Zhao Yang Zhang Yongxing Sun Jia Chen Li Wu Liang Zhao Hongdeng Qiu Yujian He 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期514-519,共6页
The recovery of gold from waste electronic and electric equipment(WEEE) has gained great attention with the increased number of WEEE,because it can largely alleviate the pressure on the environment and resources.Coval... The recovery of gold from waste electronic and electric equipment(WEEE) has gained great attention with the increased number of WEEE,because it can largely alleviate the pressure on the environment and resources.Covalent organic frameworks(COFs) are ideal adsorbents for gold recovery owing to their large surface area,good stability,easily functionalized ability,periodic structures,and definitive nanopores.Herein,a cyano-functionalized COF(COF-CN) with high crystallinity was large-scale prepared under mild conditions for the recovery of gold.The introduction of cyano groups enable COF-CN to exhibit excellent gold recovery performance,which possesses fast adsorption kinetics,high cycling stability,and adsorption capacity up to 663.67 mg/g.Excitingly,COF-CN showed extremely high selectivity for gold ions,even in the presence of various competing cations and anions.The COF-CN maintained excellent selectivity and removal efficiency in gold recovery experiments from WEEE.The facile synthesis of COF-CN and its outstanding selectivity in actual samples make it an attractive opportunity for practical gold recovery. 展开更多
关键词 Cyano functionalization Gold recovery Covalent organic frameworks Waste electronic and electric equipment Selectivity
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Electrocatalytic ammonium nitrate synthesis through integrating nitric oxide redox reactions over porphyrinic metal-organic frameworks 认领 引用
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作者 Yi Tan Xiaokang Chen +4 位作者 Jian Yuan Guan Sheng Wei-Qiao Deng Ghim Wei Ho Hao Wu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第5期558-565,I0013,共8页
The conversion of nitric oxide(NO),a gaseous pollutant with an intermediate nitrogen oxidation state,into value-added ammonium nitrate(NH4NO3)via redox processes offers a sustainable alternative to conventional ... The conversion of nitric oxide(NO),a gaseous pollutant with an intermediate nitrogen oxidation state,into value-added ammonium nitrate(NH4NO3)via redox processes offers a sustainable alternative to conventional disposal methods,which are hampered by competing pathways that yield undesirable byproducts.Herein,we decouple the synthesis of NH4NO3into electrochemical NO oxidation(NOOR)and reduction(NORR)by employing H-terminated and Cu-metallated porphyrinic metal-organic framework catalysts(H-PMOF and Cu-PMOF,respectively),leveraging their tailored coordination environments and varied NO adsorption configurations.The H-PMOF favors O-atom adsorption via hydrogen bonding,whereas the Cu-PMOF strengthens N-atom adsorption through Cu-N interactions.They promote NOOR tand NORR to N,respectively,achieving greater Faradaic efficiencies and yield rates compared to their respective counterparts.When integrated in one electrolyzer,they enable direct synthesis of NH4NO3by generating 662.4μmol of Nand 409.5μmol of NH4+hourly.Molecular dynamics simulations reveal differences in adsorption modes,while computational results identify the ratedetermining dehydrogenation(*HNO3→*NO3for NOOR)and hydrogenation steps(*NO→~*NHO for NORR),with both catalysts exhibiting reduced energy barriers.This work presents a strategy for directing NO redox reactions through coordination engineering,paving the way for sustainable nitrogen valorization. 展开更多
关键词 Nitric oxide Porphyrin Metal-organic frameworks Ammonium nitrate
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Bioinspired high-entropy metal-organic frameworks towards boosted CO2 photoconversion 认领 引用
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作者 Xiaohong Li Limin Jin +3 位作者 Haihui Yu Yuteng Zhang Haifeng Zhang Yanbiao Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期326-332,共7页
Sustainable photochemical CO2 conversion represents a promising strategy for mitigating excess CO2 emissions and achieving“carbon neutrality”.The development of advanced catalysts with an abundance of active s... Sustainable photochemical CO2 conversion represents a promising strategy for mitigating excess CO2 emissions and achieving“carbon neutrality”.The development of advanced catalysts with an abundance of active sites and efficient separation of photo-generated charge carriers remains a significant challenge.Here,we present a high-entropy(HE)photocatalyst by integrating five metals into Prussian blue(PB)to afford Kx(MnFeCoNiCu)[Fe(CN)6](HE-PBA)which exhibits a high concentration of active centers and rapid electron transfer,enabling superior CO2-to-CO photoreduction performance.The HE-PBA composite catalyst delivered a high CO yield(up to 1220.5μmol g-1h-1),achieving near 100%product selectivity.A mechanistic analysis has revealed strong coupling and overlapping multi-atomic orbitals,which facilitates local electron redistribution and a readjustment of electron density.This effect serves to generate abundant reactive sites with CO2 interactions that facilitate C-O bond activation.Additionally,an efficient electron transfer driven by the disparity in metal electronegativity inhibits unwanted recombination of electron-hole pairs.More significantly,the photoelectrons migrate and accumulate on the HE-PBA surface,exhibiting extended long lifetimes and robust reduction ability.The findings of this study provide important insights that can contribute to the development of high-entropy materials rich in transition metals with far-ranging potential applications. 展开更多
关键词 Photocatalytic CO2reaction High-entropy catalyst Metal-organic frameworks Charge separation
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Covalent Organic Frameworks Modified Composite Proton Exchange Membranes towards Advanced Fuel Cells 认领 引用
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作者 Miao-Han Ban Jin-Lun Wu +3 位作者 Yi-Meng Han An-Ping Yang Qi Ding Fei Xu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第5期1287-1306,I0009,共20页
The urgent global demand for clean energy has positioned proton exchange membrane fuel cells(PEMFCs)as a pivotal technology owing to their high efficiency and environmental friendliness.Their performance critically re... The urgent global demand for clean energy has positioned proton exchange membrane fuel cells(PEMFCs)as a pivotal technology owing to their high efficiency and environmental friendliness.Their performance critically relies on the proton exchange membranes(PEMs).Recently,integrating covalent organic frameworks(COFs)into conventional proton-conducting polymers has gained increasing,as this strategy is expected to combine the structural advantages of COFs with polymer flexibility to develop advanced PEMs.This review briefly outlines the current types of PEMs and the COF design for proton conducting.Then the fabrication strategies and evaluation methods are introduced.The design of COF-modified Nafion and sulfonated polyetheretherketone(SPEEK)for low-humidity proton conduction,as well as COF-modified polybenzimidazole(PBI)for high-temperature proton conduction were summarized,with particular emphasis on COFs forming continuous“proton highways”within polymer matrices for enhanced conduction while leveraging molecular sieving to suppress fuel crossover and thus improve cell efficiency and safety.Finally,critical challenges and outlook of COF-modified PEMs are discussed,such as interfacial compatibility,COF agglomeration,and the long-term stability and scalability under harsh conditions,which severely hinder the practical applications.Potential solutions are proposed,including in situ growth,hierarchical pore design,and gradient doping,to improve interfacial compatibility while maintaining excellent mechanical properties,as well as the development of intelligent and multifunctional PEMs. 展开更多
关键词 Covalent organic frameworks Proton exchange membranes COF-modified PEMs Interfacial compatibility
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Amplified Dimensionality Effect from 2D to 3D Covalent Organic Frameworks for Enhanced Fluorescent Sensing of Nitroaromatic Explosives 认领 引用
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作者 Jia-Long Song Jun-Xia Ren +9 位作者 Bo Miao Zheng-Hao Huang Xiao Lv Lei Cheng Run-Lin Huang Yu-Xuan Huang Tian Zhong Yao-Zu Liu Jing An Qian-Rong Fang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第5期1373-1380,I0011,共8页
Efficient detection of nitroaromatic explosives remains a great challenge,and covalent organic frameworks(COFs)incorporating aggregation-induced emission(AIE)units provide a promising platform for high-performance flu... Efficient detection of nitroaromatic explosives remains a great challenge,and covalent organic frameworks(COFs)incorporating aggregation-induced emission(AIE)units provide a promising platform for high-performance fluorescent sensing.Herein,we designed and synthesized both two-dimensional(2D)and three-dimensional(3D)AIE-active COFs to systematically investigate how dimensional differences(pore architecture,charge transfer efficiency,and AIE behavior)regulate sensing performance.Through a“4+4”imine condensation strategy,a 2D sql topological COF(TPPDA-TPTPE)was obtained from a planar tetraamine(TPPDA),whereas a 3D pts topological COF(JUC-646)was constructed from a twisted tetraamine(BMTA)with Td geometry—using the same TPTPE linker.Both COFs exhibit high crystallinity,stability,and strong AIEderived luminescence,but show strikingly different sensing performances.In particular,JUC-646 achieves a quenching constant of 6.99×104L/mol toward 2,4,6-trinitrophenol(TNP),nearly five times higher than that of TPPDA-TPTPE.This superior performance originates from the 3D open-channel structure(facilitating analyte diffusion),enhanced host-guest interactions,and energetically favorable photoinduced electron transfer—all of which are derived from dimensional differences.This comparative study explicitly establishes a structure-function relationship between framework dimensionality and sensing performance,offering direct guidance for the rational design of AIE-active COFs with tailored dimensionality for efficient explosive detection. 展开更多
关键词 Covalent organic frameworks(COFs) Aggregation-induced emission(AIE) Dimensionality effect Fluorescent sensing Nitroaromatic explosives
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Fluorophore integration strategy endowing 3D covalent organic frameworks with dual-mode white light emission 认领 引用
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作者 Jialiang Liu Chengtao Gong +5 位作者 Jinchen Qian Sen Wang Yi Liang Chenglong Guo Yongwu Peng Jun Pan 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期279-283,共5页
The design of covalent organic frameworks(COFs)with strong fluorescence in both solid and solution states present a significant challenge for white-light-emitting diode(WLED)applications,primarily due to the difficult... The design of covalent organic frameworks(COFs)with strong fluorescence in both solid and solution states present a significant challenge for white-light-emitting diode(WLED)applications,primarily due to the difficulty of balancing aggregation-induced emission(AIE)and aggregation-caused quenching(ACQ).Here,we report the synthesis of a 7-fold interpenetrated three-dimensional COF(3D COF)with a pts topology,termed ZJUT-M,constructed by co-condensation of a T4-symmetric monomer with two D2h-symmetric fluorophores exhibiting distinct emission behaviors.ZJUT-M displays robust fluorescence in both solid and solution states,enabling its use in WLEDs.Mechanistic studies reveal that the dual-mode emission is driven by the synergistic integration of high-degree-of-freedom chromophores,which promote AIE emission in the solid state,and conformationally restricted fluorophores,which suppress ACQ effect in solution.These findings provide a strategic pathway for achieving multi-state emissive COFs,opening avenues for their application in advanced optoelectronic devices,including next-generation LEDs. 展开更多
关键词 Three-dimensional covalent organic frameworks Aggregation-induced emission(AIE) Aggregation-caused quenching(ACQ) Fluorophore integration strategy Dual-mode white light emission Next-generation LEDs
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Covalent organic frameworks and their composites as high-performance photocatalysts for organic pollutant removal 认领 引用
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作者 Yujuan Guo Sheng Liu +3 位作者 Jun Du Zushun Xu Guangfu Liao Qing Li 《Materials Reports(Energy)》 EI 2026年第2期1-24,共24页
Covalent organic frameworks(COFs)are a new class of porous polymers completely connected by covalent bonds,which have been favored by many researchers due to their admirable physicochemical properties,such as large sp... Covalent organic frameworks(COFs)are a new class of porous polymers completely connected by covalent bonds,which have been favored by many researchers due to their admirable physicochemical properties,such as large specific surface area,tunability,high versatility,and admirable stability.In order to further improve the photocatalytic performance of COF materials,the construction of composite materials is undoubtedly an effective strategy.Numerous studies have shown that COFs exhibit unique properties when combined with other materials and can serve as efficient photocatalysts for the removal of organic pollutants from water.This article reviews the construction strategies of COF-based catalysts and recent research progress on composite materials such as metalnanoparticles,semiconductor-,metal-organic framework(MOF)-based composites,along with their removal mechanisms for certain organic pollutants in water.In addition,this review also provides some new perspectives on significant challenges,opportunities,and promising prospects for future research.In summary,significant progress has been made in the development of state-of-the-art COF-based composite photocatalysts for pollutant removal. 展开更多
关键词 Covalent organic frameworks Composite photocatalyst Organic pollutant Environmental remediation
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Efficient photocatalytic hydrogen production by a heterojunction strategy with covalent organic frameworks loaded with non-precious-metal semiconductors 认领 引用
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作者 Bolin Yang Fei Jin Zhiliang Jin 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第2期172-184,共13页
Rational energy band engineering and the exposure of catalytically active sites critically enhance the efficiency of the hydrogen evolution reaction.In this study,TAPT-TFPT-COF/Mn0.2Cd0.8S composite photocatalys... Rational energy band engineering and the exposure of catalytically active sites critically enhance the efficiency of the hydrogen evolution reaction.In this study,TAPT-TFPT-COF/Mn0.2Cd0.8S composite photocatalysts were prepared by wet impregnation.The energy bands of non-precious-metal sulfide nanorods and a covalent organic framework(COF)were interleaved for effective heterojunction construction,enabling a three-fold enhancement in hydrogen evolution compared to that of the pure Mn(0.2)Cd0.8S catalyst.The enhanced catalyst performance is attributed to the construction of heterojunctions and the synergistic photothermal dynamics of the flexible monomers under illumination,which facilitates localized charge carrier migration.Furthermore,the hydrogen evolution mechanism in the Mn(0.2)Cd0.8S/COF composites was elucidated through photoelectrochemical experiments,in-situ irradiation X-ray photoelectron spectroscopy,surface photovoltage measurements,and density functional theory.The loaded organic semiconductor materials were combined with non-precious-metal semiconductors to construct S-scheme heterojunctions with increased hydrophilicity,and the tight combination of Mn(0.2)Cd0.8S and COF optimized the photogenerated electron utilization efficiency. 展开更多
关键词 S-scheme heterojunction Metal sulfide Photocatalytic hydrogen evolution Covalent organic frameworks Charge transfer Internal electric field
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Surface Functionalization Modification of Metal Organic Frameworks with Polymer via Metal-free Atom Transfer Radical Polymerization for Oil-water Separation 认领 引用
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作者 Hong-Ye Li Zi-An Wang +1 位作者 Li-Ping Wang Guang Li 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第8期2797-2808,I0022,共12页
We present a method for modifying metal organic frameworks(MOFs)surface functionalization using metal-free atom transfer radical polymerization(ATRP).Amino-functionalized zeolitic imidazolate frameworks-8(ZIF-8-NH2... We present a method for modifying metal organic frameworks(MOFs)surface functionalization using metal-free atom transfer radical polymerization(ATRP).Amino-functionalized zeolitic imidazolate frameworks-8(ZIF-8-NH2)was synthesized at room temperature,and ZIF-8-Br was obtained by the reaction of the amino group in ZIF-8-NH2 with the acyl bromide group in 2-bromoisobutyl bromide(BIBB),thereby introducing secondary bromine groups onto the surface of ZIF-8-NH2.Then,ZIF-8-g-poly(methyl methacrylate)(ZIF-8-g-PMMA)hybrid materials were synthesized using ZIF-8-Br as an initiator via surface-initiated metal-free atom transfer radical polymerization(metal-free ATRP).The structural and morphological evolutions were monitored using Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),Xray powder diffraction(XRD)and scanning electron microscopy(SEM)measurements.Thermogravimetry(TG)analysis verified that ZIF-8-g-PMMA had excellent thermal stability,and the water stability test demonstrated that after grafting PMMA from the ZIF-8-NH2 surface,the hydrophobicity and water stability were improved significantly.The BET results proved that ZIF-8-g-PMMA had a high specific surface area of 835.24 m2/g.By immobilizing ZIF-8-g-PMMA hybrid material on fabrics,the modified fabrics exhibit excellent superhydrophobicity,with the water contact angle as high as 159.2°.Attributed to the synergistic effect of the micro-and nano-graded porous structure and low-surface-energy PMMA coatings,ZIF-8-g-PMMA hybrid material modified fabrics achieves highly efficient oil-water separation,with excellent adsorption effects on both light and heavy oils.Among them,the heavy oil can pass through the modified fabric within seconds with an oil-water separation efficiency of 96%.This method will further expand the scope of application of metal-free ATRP technology and MOFs materials. 展开更多
关键词 Metal organic frameworks(MOFs) ZIF-8-NH2 Metal-free atom transfer radical polymerization(ATRP) Oil-water separation
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Large Language Models for Cybersecurity Intelligence: A Systematic Review of Emerging Threats, Defensive Capabilities, and Security Evaluation Frameworks 认领 引用
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作者 Hamed Alqahtani Gulshan Kumar 《Computers, Materials & Continua》 SCIE EI 2026年第6期297-367,共71页
Large Language Models(LLMs)are becoming integral components of modern cybersecurity ecosystems,simultaneously strengthening defensive capabilities while giving rise to a new class of Artificial Intelligence-Generated ... Large Language Models(LLMs)are becoming integral components of modern cybersecurity ecosystems,simultaneously strengthening defensive capabilities while giving rise to a new class of Artificial Intelligence-Generated Content(AIGC)-driven threats.This PRISMA-guided systematic review synthesises 167 peer-reviewed studies published between 2022 and 2025 and proposes a unified threat-defence-evaluation taxonomy as a central analytical framework to consolidate a previously fragmented body of research.Guided by this taxonomy,the review first examines AIGC-enabled threats,including automated and highly personalised phishing,polymorphic malware and exploit generation,jailbreak and adversarial prompting,prompt-injection attack vectors,multimodal deception,persona-steering attacks,and large-scale disinformation campaigns.The surveyed evidence indicates a qualitative escalation in adversarial capabilities,with LLMs significantly enhancing scalability,adaptability,and realism while markedly reducing the technical barriers to conducting sophisticated attacks.Second,the review analyses LLM-enabled defensive applications spanning intrusion and anomaly detection,malware analysis and log-semantic modelling,multilingual threat intelligence extraction,vulnerability discovery and code repair,and Security Operations Center(SOC)automation through Retrieval-Augmented Generation(RAG)and multi-agent systems.Although these approaches demonstrate strong potential as semantic reasoning and decision-support components within hybrid security architectures,their real-world effectiveness remains constrained by hallucination risks,adversarial susceptibility,distributional shifts,and operational overhead.Third,the review synthesises current security evaluation and red-teaming practices,revealing a fragmented assessment landscape characterised by narrow benchmarks,inconsistent evaluation metrics,and limited longitudinal robustness analysis.Overall,the taxonomy-driven synthesis highlights a structurally imbalanced ecosystem in which offensive innovation outpaces defensive maturity and governance,and it informs a structured,research-question-aligned roadmap for developing trustworthy,resilient,and policy-aligned LLM-powered cybersecurity systems. 展开更多
关键词 Artificial intelligence-generated content threats cybersecurity intelligence large language model-based defensive systems large language models red-teaming and evaluation frameworks
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