Carboxylate-based metal–organic frameworks(CMOFs)have received considerable attentions for their high stability,catalytic activity,and porosity.However,synthesis of CMOFs requires high temperature,pressure,and long r...Carboxylate-based metal–organic frameworks(CMOFs)have received considerable attentions for their high stability,catalytic activity,and porosity.However,synthesis of CMOFs requires high temperature,pressure,and long reaction time.Here,we explored the activity of 2-methylimidazole(2-MIM)for ultrafast synthesis of CMOF nanostructures(CMOFNs),in aqueous medium at room temperature and reaction time of 10 min.Seven CMOFNs have been synthesized by using Al3+,Cr3+,Cu2+,Fe3+,In3+,or Cd2+salt and1,4-bezenedicarboxylic acid,or 1,3,5-benzenetricarboxylic acid.Through this technique,the CMOFs with space time yield 181–501 kgcrystal sizes of ca.200–700 nm was obtained.展开更多
Construction of macro-materials with highly oriented microstructures and well-connected interfaces between building blocks is significant for a variety of applications. However, it is still challenging to confine the ...Construction of macro-materials with highly oriented microstructures and well-connected interfaces between building blocks is significant for a variety of applications. However, it is still challenging to confine the desired structures. Thus, well-defined building blocks would be crucial to address this issue. Herein, we present a facile process based on 1.8 nm Pd nanoclusters （NCs） to achieve centimeter-size assemblages with aligned honeycomb structures, where the diameter of a single tubular moiety is -4 μm. Layered and disordered porous assemblages were also obtained by modulating the temperature in this system. The reconciled interactions between the NCs were crucial to the assemblages. As a comparison, 14 nm Pd nanoparticles formed only aggregates. This work highlights the approach of confining the size of the building blocks in order to better control the assembly process and improve the stability of the structures.展开更多
This special issue provides several selected peer-reviewedcontributions presented at Tsinghua-NTU BilateralWorkshop for Young Scientists at Tsinghua University,Beijing on November 13th, 2016. The workshop wasmainly fo...This special issue provides several selected peer-reviewedcontributions presented at Tsinghua-NTU BilateralWorkshop for Young Scientists at Tsinghua University,Beijing on November 13th, 2016. The workshop wasmainly focused on recent research progresses in na-noscience and optoelectronic materials achieved by re-searchers from Tsinghua University （THU） and NanyangTechnological University （NTU）.展开更多
基金supported by the National Key R&D Program of China(2017YFA0700101 and 2016YFA0202801)the National Natural Science Foundation of China(21431003)
文摘Carboxylate-based metal–organic frameworks(CMOFs)have received considerable attentions for their high stability,catalytic activity,and porosity.However,synthesis of CMOFs requires high temperature,pressure,and long reaction time.Here,we explored the activity of 2-methylimidazole(2-MIM)for ultrafast synthesis of CMOF nanostructures(CMOFNs),in aqueous medium at room temperature and reaction time of 10 min.Seven CMOFNs have been synthesized by using Al3+,Cr3+,Cu2+,Fe3+,In3+,or Cd2+salt and1,4-bezenedicarboxylic acid,or 1,3,5-benzenetricarboxylic acid.Through this technique,the CMOFs with space time yield 181–501 kgcrystal sizes of ca.200–700 nm was obtained.
文摘Construction of macro-materials with highly oriented microstructures and well-connected interfaces between building blocks is significant for a variety of applications. However, it is still challenging to confine the desired structures. Thus, well-defined building blocks would be crucial to address this issue. Herein, we present a facile process based on 1.8 nm Pd nanoclusters （NCs） to achieve centimeter-size assemblages with aligned honeycomb structures, where the diameter of a single tubular moiety is -4 μm. Layered and disordered porous assemblages were also obtained by modulating the temperature in this system. The reconciled interactions between the NCs were crucial to the assemblages. As a comparison, 14 nm Pd nanoparticles formed only aggregates. This work highlights the approach of confining the size of the building blocks in order to better control the assembly process and improve the stability of the structures.
文摘This special issue provides several selected peer-reviewedcontributions presented at Tsinghua-NTU BilateralWorkshop for Young Scientists at Tsinghua University,Beijing on November 13th, 2016. The workshop wasmainly focused on recent research progresses in na-noscience and optoelectronic materials achieved by re-searchers from Tsinghua University （THU） and NanyangTechnological University （NTU）.
