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论文类型：期刊论文

发表时间：2016-01-01

发表刊物：RSC ADVANCES

收录刊物：SCIE、EI

卷号：6

期号：109

页面范围：108010-108016

ISSN号：2046-2069

摘要：Coordinated frameworks having large pores can accommodate organic molecules and adsorb gas, such as waste carbon dioxide, to transform into valuable chemical products. By incorporating a tetraphenylethylene moiety as the four-point connected node, herein, two types of Ni(II)-based coordinated frameworks have been solvothermally synthesized via solvent driven self-assembly and structurally characterized. Notably, these two complexes both contain a trinuclear cluster but with different styles and construction modes. The IR and XRD spectra suggested that the two compounds are highly stable in various solvents, including water, DMF, C2H5OH, C2H2Cl2, DMSO and 1,4-dioxane. Catalysis experiments indicated that both of them could act as effective heterogeneous catalysts for cycloaddition of CO2 with epoxides, forming cyclic carbonates under ambient conditions. Notably, the two catalysts contained the same amount of catalytic sites, but the activity of Ni-1 was significantly lower than that of Ni-2, demonstrating a size-selective catalytic performance.