Framework disorder and its effect on selective hysteretic sorption of a T-shaped azole-based metal–organic framework
Sujuan Wang,
Zhang-Wen Wei,
Jianyong Zhang,
Long Jiang,
Dingxin Liu,
Ji-Jun Jiang,
Rui Si,
Cheng-Yong Su
Affiliations
Sujuan Wang
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
Zhang-Wen Wei
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
Jianyong Zhang
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
Long Jiang
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
Dingxin Liu
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
Ji-Jun Jiang
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
Rui Si
Shanghai Institute of Applied Physics, Chinese Academy Sciences, Shanghai Synchrotron Radiation Facility, Shanghai 201204, People's Republic of China
Cheng-Yong Su
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
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 CO2 sorption up to room temperature, and shows selectivity of CO2 over H2, CH4 and N2 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.
