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Framework disorder and its effect on selective hysteretic sorption of a T-shaped azole-based metal–organic framework

Metal–organic frameworks with highly ordered porosity have been studied extensively. In this paper, the effect of framework (pore) disorder on the gas sorption of azole-based isoreticular Cu(II) MOFs with rtl topology and characteristic 1D tubular pore channels is investigated for the first time. In...

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Detalles Bibliográficos
Autores principales: Wang, Sujuan, Wei, Zhang-Wen, Zhang, Jianyong, Jiang, Long, Liu, Dingxin, Jiang, Ji-Jun, Si, Rui, Su, Cheng-Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6327186/
https://www.ncbi.nlm.nih.gov/pubmed/30713706
http://dx.doi.org/10.1107/S2052252518015749
Descripción
Sumario:Metal–organic frameworks with highly ordered porosity have been studied extensively. In this paper, the effect of framework (pore) disorder on the gas sorption of azole-based isoreticular Cu(II) MOFs with rtl topology and characteristic 1D tubular pore channels is investigated for the first time. In contrast to other isoreticular rtl metal–organic frameworks, the Cu(II) metal–organic framework based on 5-(1H-imidazol-1-yl)isophthalate acid has a crystallographically identifiable disordered framework without open N-donor sites. The framework provides a unique example for investigating the effect of pore disorder on gas sorption that can be systematically evaluated. It exhibits remarkable temperature-dependent hysteretic CO(2) sorption up to room temperature, and shows selectivity of CO(2) over H(2), CH(4) and N(2) at ambient temperature. The unique property of the framework is its disordered structure featuring distorted 1D tubular channels and DMF-guest-remediated defects. The results imply that structural disorder (defects) may play an important role in the modification of the performance of the material.