2025年3月10日，Royal Society of Chemistry 旗下知名期刊《Inorganic Chemistry Frontiers》在线发表了云南师范大学化学化工学院朱爱新教授团队的最新研究成果《Guest-induced gate-opening in a flexible MOF adsorbent that exhibits benzene/cyclohexane selectivity》.云南师范大学化学化工学院朱爱新教授、爱尔兰利默里克大学 Michael J. Zaworotko为共同通讯作者。Abstract

We report the synthesis of a 2-fold interpenetrated primitive cubic (pcu) topology network, X-pcu-11-Zn, formulated as [Zn2(DMTDC)2(dpb)] (H2DMTDC = 3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylic acid; dpb = 1,4-di(pyridin-4-yl)benzene). Upon removal of solvent molecules from the as-synthesised form, X-pcu-11-Zn-α, transformation from a large-pore “open” phase to a narrow pore phase, X-pcu-11-Zn-β, occurred. The β-phase subsequently exhibited guest-induced switching as evidenced by a 2-step type F-IV2 adsorption isotherm for N2 at 77 K and a 3-step profile with two gate-opening pressures for CO2 at 195 K. Dynamic vapour sorption studies revealed selective sorption of methanol, ethanol, and CH3CN over H2O at 298 K. Furthermore, X-pcu-11-Zn-β selectively adsorbed benzene over cyclohexane concomitant with a gate-opening effect driven by structural transformations. Importantly, the transformations between the guest-free and guest-loaded structures were found to be reversible over six adsorption/desorption cycles. Single-crystal X-ray diffraction analysis of the benzene-loaded phase indicates that selective benzene binding can be attributed to π–π and C–H⋯π aromatic packing interactions.

扩展阅读：云师大朱爱新博士在《德国应化》发表文章恭喜云南师范大学朱爱新博士在美国化学会志《JACS》发表文章