The shaping of metal-organic frameworks(MOFs),referring to the integration of small submillimeter MOF crystals into bulk samples with desired size,shape and mechanical stability,is an important step for the practical ...The shaping of metal-organic frameworks(MOFs),referring to the integration of small submillimeter MOF crystals into bulk samples with desired size,shape and mechanical stability,is an important step for the practical use of this class of porous materials in many applications.MOFs are constructed by the coordination bonding of metal ions/clusters and organic ligands.Since coordination bonds are mostly weaker than covalent bands,MOFs show a relatively low stability compared to conventional porous materials,such as zeolites or porous carbon-based materials.Thus,many shaping methods for the con ventional porous materials involving treatments under harsh conditions could not be directly applied to prepare shaped MOFs.However,the inorganic–organic hybrid nature of MOFs also affords the opportu nity of developing unique methods for shaping the materials.Herein,an overview of some classic methods for the shaping of MOFs is presented,including granulation,extrusion,spray drying,and press ing.In addition,the recently developed methods for the preparation of shaped MOFs used in separation and gas storage,including templated shaping,self-shaping,shaping by in situ growth on substrates,and shaping with sacrificial materials,are highlighted.展开更多
Crystallographic engineering and chemical synthesis modification play crucial roles in modulating material properties and designing multifunctional materials,such as those with second-harmonic generation(SHG)switching...Crystallographic engineering and chemical synthesis modification play crucial roles in modulating material properties and designing multifunctional materials,such as those with second-harmonic generation(SHG)switching and ferroelastic behaviors.Herein,we present the role of anion-based design in crystalline materials through anion H/F substitution.展开更多
In response to the limitations of conventional thermal management materials,such as restricted functionality,narrow temperature adaptability,and poor breathability,flexibility,and stretchability,this highlight present...In response to the limitations of conventional thermal management materials,such as restricted functionality,narrow temperature adaptability,and poor breathability,flexibility,and stretchability,this highlight presents a breathable,dual-mode leather-like nanotextile(LNT)with asymmetric pleated photonic microstructures and Janus wettability.This innovative design enables efficient and adaptive personal thermal regulation across a broad temperature range,while significantly improving wearer comfort through optimized moisture management and mechanical compliance.The proposed LNT opens new pathways for developing nextgeneration smart textiles,showing great potential for real-world applications in dynamic and demanding environments.展开更多
基金support from the National Key R&D Program of China(Grant No.2018YFC1903303)the Natural Science Foundation of China(Grant No.21601008)the Beijing Natural Science Foundation(Grant No.2182005).
文摘The shaping of metal-organic frameworks(MOFs),referring to the integration of small submillimeter MOF crystals into bulk samples with desired size,shape and mechanical stability,is an important step for the practical use of this class of porous materials in many applications.MOFs are constructed by the coordination bonding of metal ions/clusters and organic ligands.Since coordination bonds are mostly weaker than covalent bands,MOFs show a relatively low stability compared to conventional porous materials,such as zeolites or porous carbon-based materials.Thus,many shaping methods for the con ventional porous materials involving treatments under harsh conditions could not be directly applied to prepare shaped MOFs.However,the inorganic–organic hybrid nature of MOFs also affords the opportu nity of developing unique methods for shaping the materials.Herein,an overview of some classic methods for the shaping of MOFs is presented,including granulation,extrusion,spray drying,and press ing.In addition,the recently developed methods for the preparation of shaped MOFs used in separation and gas storage,including templated shaping,self-shaping,shaping by in situ growth on substrates,and shaping with sacrificial materials,are highlighted.
基金supported by the National Natural Science Foundation of China(No.22271131 and 22401132).
文摘Crystallographic engineering and chemical synthesis modification play crucial roles in modulating material properties and designing multifunctional materials,such as those with second-harmonic generation(SHG)switching and ferroelastic behaviors.Herein,we present the role of anion-based design in crystalline materials through anion H/F substitution.
文摘In response to the limitations of conventional thermal management materials,such as restricted functionality,narrow temperature adaptability,and poor breathability,flexibility,and stretchability,this highlight presents a breathable,dual-mode leather-like nanotextile(LNT)with asymmetric pleated photonic microstructures and Janus wettability.This innovative design enables efficient and adaptive personal thermal regulation across a broad temperature range,while significantly improving wearer comfort through optimized moisture management and mechanical compliance.The proposed LNT opens new pathways for developing nextgeneration smart textiles,showing great potential for real-world applications in dynamic and demanding environments.
