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作 者:Hao-Long Zhou Jie Bai Xiao-Yun Tian Zong-Wen Mo Xiao-Ming Chen
机构地区:[1]MOE Key Laboratory of Bioinorganic and Synthetic Chemistry,School of Chemistry,Sun Yat-Sen University,Guangzhou,Guangdong,510275 China [2]Department of Chemistry ond Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province,Shantou University,Shantou,Guangdong 515063,China
出 处:《Chinese Journal of Chemistry》2021年第10期2718-2724,共7页中国化学(英文版)
基 金:supported by NSFC(Nos.22090061,21731007,21821003&22001160);Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program(No.2017BT01C161).
摘 要:Main observation and conclusion Magnifying the controllable directional motions of molecular machines to the macroscopic levels is a significant topic for chemists.Flexible metal–organic frameworks with long-range order and responsive structural transformation under external stimuli may be an appropriate platform for achieving the target.By taking advantage of the single-crystal to single-crystal manner of soft porous crystals,we utilize single-crystal X-ray diffraction to directly observe the dynamic structural inversion of a new three-fold interpenetrated pillared-layer metal-organic framework[Co(edba)(bpy)](MCF-83,H2edba=4,4’-(ethyne-1,2-diyl)dibenzoic acid,bpy=4,4’-bipyridine).More interestingly,the dynamic inversions of the pillars and layers are selectively guest-controllable and independent,allowing precise control of the directional shape changes,which is the key of constructing intelligent materials to accomplish a complex task.The mechanism is further studied by combining the X-ray diffraction analyses,sorption measurements and molecular simulations.
关 键 词:Porous coordination polymers Metal-organic frameworks Structural transformation X-ray diffraction ADSORPTION
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