Journal
CRYSTENGCOMM
Volume 14, Issue 23, Pages 8280-8285Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce26170g
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Funding
- National Natural Science Funds [20825623, 51172153]
- Program for the Top Science and Technology Innovation Teams of Higher Learning Institutions of Shanxi
- Program for the Shanxi Province Foundation for Returness [2010-35]
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We report the first example of the preparation of an ordered hierarchical zeolitic imidazolate framework nest architecture (denoted as ZIF-GIS). ZIF-GIS (Zn(eIm)(0.65)(dmbIm)(1.35)) is a novel compound with GIS topology and has been synthesized by using complementary ligands of 2-ethylimidazole (eIm) and 5,6-dimethylbenzimidazole (dmbIm) in several solution systems. ZIF-GIS which exhibits hierarchical and nest architectures was obtained by a solvothermal approach based on the mixed solvent of aqueous ammonia (NH3 center dot H2O) and methanol (CH3OH). The apple-like hierarchical ZIF-GIS architectures with diameters of about 2-3 mu m are built from numerous nanoplates with a thickness of about 20-40 nm. The results demonstrated that the formation of ordered hierarchical and nest architectures could be ascribed to the cooperation of NH3 center dot H2O and CH3OH. This synthesis strategy in a mixed solvent might be extended to other systems for the synthesis of hierarchical ZIF or MOF architectures.
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