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Co(II)-based Metal-Organic Frameworks and Their Application in Gas Sorption and Solvatochromism

机译:CO(II)基于金属 - 有机框架及其在气体吸附和溶剂质中的应用

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摘要

We report the synthesis and structural characterization of a unique Co-MOF-1 with the formula [Co-2(dpmndi)(bdc)(2))]center dot DMF; (dpmndi = N,N'-bis(4-pyridylmethyl)-1,4,5,8-naphthalenediimide and bdc = benzene-1,4-dicarboxylate) along with an isonicotinate based Co-MOF-2 having the formula of [Co-3(ina)(4)(OH)(H2O)3]center dot H2O-NO3. A single crystal X-ray analysis reveals that Co-MOFs 1 and 2 exhibits (5)-connected and (8)-connected three-dimensional framework architecture having tts and hex topology, respectively. Importantly, Co-MOF-1 possess microsized cage with an internal cavity of 8.6 angstrom. The gas sorption analysis was also performed on both Co-MOFs 1 and 2, and results show high uptake for N-2 and CO2 compared to H-2 and CH4. Moreover, both Co-MOFs 1 and 2 display high value of isosteric heat of adsorption (Q(st)) for CO2 gas. In addition, Co-MOF-1 also exhibits the promising solvatochromic behavior.
机译:我们报告了用公式[CO-2(DPMNDI)(BDC)(2))]中心点DMF的唯一CO-MOF-1的合成和结构表征。 (DPMNDI = N,N'-BIS(4-吡啶基甲基)-1,4,5,8-萘二酰亚胺和BDC =苯-1,4-二羧酸盐,以及具有[ CO-3(INA)(4)(OH)(H2O)3]中心点H2O-NO3。 单晶X射线分析显示,CO-MOF 1和2展示(5) - 连接和(8)连接的三维框架架构,分别具有TTS和Hex拓扑。 重要的是,CO-MOF-1具有半径为8.6埃的微型笼。 还对CO-MOF 1和2进行了气体吸附分析,与H-2和CH4相比,结果显示了N-2和CO2的高摄取。 此外,CO-MOF 1和2均显示CO 2气体的吸附剂的具有替代吸附(Q(ST))的高值。 此外,CO-MOF-1还表现出有前景的溶性溶解度行为。

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