Herein,we demonstrated that poly（ethylene oxide）（PEO）,urea and thiourea can crystallize into novel ternary complex with the molar ratio of guest polymer and host small molecule as 3：2,and proved that the ternary ...Herein,we demonstrated that poly（ethylene oxide）（PEO）,urea and thiourea can crystallize into novel ternary complex with the molar ratio of guest polymer and host small molecule as 3：2,and proved that the ternary complex behaves isomorphism phenomenon by varying the ratio between urea and thiourea for the first time.This observation gives a boost to prepare co-crystals of different small molecules that cannot be obtained by direct mixing without the aid of polymer chains.展开更多
Supramolecular polymer complexes with small molecules are self-assembled through non-covalent interactions and have been proposed for a wide variety of applications in materials science and nanoscience.Our research gr...Supramolecular polymer complexes with small molecules are self-assembled through non-covalent interactions and have been proposed for a wide variety of applications in materials science and nanoscience.Our research group has recently shown the possibility of forming highly ordered nanofibers of supramolecular complexes in their thermodynamically stable state using the electrospinning technique.The ultrafast solvent evaporation rate of electrospinning made possible the in-depth characterization of complexes that had never been prepared in their pure state before because of kinetic issues associated with their formation by conventional approaches.The improved understanding of the formation mechanism allowed us to extend the concept to other techniques featuring a fast solvent evaporation rate,such as electrospray and spin-coating.In this article,we review our most significant contributions in this research field.展开更多
基金Financial support from the National Natural Science Foundation of China(Nos.21304108 and 21674128)
文摘Herein,we demonstrated that poly（ethylene oxide）（PEO）,urea and thiourea can crystallize into novel ternary complex with the molar ratio of guest polymer and host small molecule as 3：2,and proved that the ternary complex behaves isomorphism phenomenon by varying the ratio between urea and thiourea for the first time.This observation gives a boost to prepare co-crystals of different small molecules that cannot be obtained by direct mixing without the aid of polymer chains.
基金supported by a grant and a graduate scholarship (MRL)from the Natural Sciences and Engineering Research Council of Canada(NSERC)
文摘Supramolecular polymer complexes with small molecules are self-assembled through non-covalent interactions and have been proposed for a wide variety of applications in materials science and nanoscience.Our research group has recently shown the possibility of forming highly ordered nanofibers of supramolecular complexes in their thermodynamically stable state using the electrospinning technique.The ultrafast solvent evaporation rate of electrospinning made possible the in-depth characterization of complexes that had never been prepared in their pure state before because of kinetic issues associated with their formation by conventional approaches.The improved understanding of the formation mechanism allowed us to extend the concept to other techniques featuring a fast solvent evaporation rate,such as electrospray and spin-coating.In this article,we review our most significant contributions in this research field.
