Porous supramolecular assemblies are increasingly recognized for their capabilities in mass transfer and selective loading and release.In this study,a dicationic cyclodextrin[3]rotaxane was synthesized to exhibit adap...Porous supramolecular assemblies are increasingly recognized for their capabilities in mass transfer and selective loading and release.In this study,a dicationic cyclodextrin[3]rotaxane was synthesized to exhibit adaptivity in the flexible motion between the macrocycle and axle,allowing dynamic structural adjustment during their co-assembly with polyanionic nanoclusters.Meanwhile,the anions regulate the assembly to form layered,fibrous,and porous structures.By simply mixing the charged components in solution,porous ionic rotaxane-cluster assemblies have been prepared,showing selective adsorption and adaptive structural transformations.These assemblies exhibit a“breathing”effect in response to solvent adsorption/desorption,thereby enabling ABE mixture separation.DMSO disrupts hydrogen bonds and ionic interactions,allowing recrystallization to form a porous structure with larger pores.This transition is reversible by returning to the original structure in aqueous solution.The reorganization can change proton conductivity by about three orders between the two structures.展开更多
基金the National Natural Science Foundation of China(22271117 and 22172060).
文摘Porous supramolecular assemblies are increasingly recognized for their capabilities in mass transfer and selective loading and release.In this study,a dicationic cyclodextrin[3]rotaxane was synthesized to exhibit adaptivity in the flexible motion between the macrocycle and axle,allowing dynamic structural adjustment during their co-assembly with polyanionic nanoclusters.Meanwhile,the anions regulate the assembly to form layered,fibrous,and porous structures.By simply mixing the charged components in solution,porous ionic rotaxane-cluster assemblies have been prepared,showing selective adsorption and adaptive structural transformations.These assemblies exhibit a“breathing”effect in response to solvent adsorption/desorption,thereby enabling ABE mixture separation.DMSO disrupts hydrogen bonds and ionic interactions,allowing recrystallization to form a porous structure with larger pores.This transition is reversible by returning to the original structure in aqueous solution.The reorganization can change proton conductivity by about three orders between the two structures.
