Partial Order-Disorder Transformation of Interpenetrated Porous Coordination Polymers
作者机构：MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-sen UniversityGuangzhou 510275 Key Laboratory of Coal to Ethylene Glycol and Its Related TechnologyFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002
出 版 物：《CCS Chemistry》 (中国化学会会刊（英文）)
年 卷 期：2022年第4卷第5期
页 面：1587-1596页
学科分类：07[理学] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学]
基 金：supported by NSFC(nos.21731007,22090061,21821003,and 22071272) the Guangdong Pearl River Talents Program(no.2017BT01C161).The。
主 题：order disorder interpenetration crystalto-crystal structural transformation dye adsorption and separation
摘 要：Controlling interpenetration and flexibility behaviors is intriguing and fundamental for porous coordination polymers.We report exceptional interpenetration behaviors involving controllable partial order–disorder structural transformations.A new bis-benzotriazolate ligand(NaH2sbbta)with a twisted and anionic backbone was designed and synthesized.The solvothermal reaction of ZnCl_(2) and NaH_(2)sbbta yielded(Et_(2)NH_(2))_(3)[Zn_(5)Cl_(4)(sbbta)_(3)]·6DEF(2)possessing two-fold interpenetrated anionic pcu networks with symmetry,shape,and charge different from the known analogues.More interestingly,powder and single-crystal X-ray diffractions showed that 2 can undergo solvent-induced structural transformation to form a noninterpenetrated anionic pcu network with larger pores(1).Consequently,1/2 can selectively adsorb/exchange cationic dyes fromneutral and anionic dyes with tunable size selectivity.However,since the transformations are reversible without obvious change of crystal sizes,the network that disappeared in X-ray crystallography should be mainly disordered rather than decomposed.Further,the structural transformations can be suppressed by thermal decomposition/removal of Et_(2)NH_(2)^(+)/Et_(2)NH.Computational simulations indicate that the ordered and disordered structures are stabilized by relatively large and small solvent molecules,respectively.
维普期刊数据库