Constructing two-dimensional(2D)supramolecular polymers with complicated hierarchical porosity significantly contributes to developing effective strategies to control delicate self-assembly architectures,thus facilita...Constructing two-dimensional(2D)supramolecular polymers with complicated hierarchical porosity significantly contributes to developing effective strategies to control delicate self-assembly architectures,thus facilitating the fabrication of advanced 2D organic functional materials.Here,we report utilizing cooperative cation-πand electrostatic interactions to construct a series of robust 2D heteropore supramolecular polymers(2D HPSPs)with hierarchical pore structures,in which hexagonal and rectangular pores are alternately and periodically arranged,and the pore sizes can be finely tuned.Remarkably,the as-prepared 2D HPSPs exhibit excellent iodine(I_(2))capture rate(a maximum K80%value is 2.25 g h^(-1)),and present a novel mechanism involving transport-adsorption spatiotemporal separation for rapid I_(2)capture.In this mechanism,the transport of free I_(2)is first conducted in large hexagonal pores,and then I_(2)can be preferentially adsorbed in small rectangular pores,thereby preventing the transfer channels from blocking and greatly improving the adsorption kinetics.展开更多
A heteropore covalent organic framework(COF) integrating tetraphenylethene skeleton and catechol segment is designed and synthesized.It exhibits extremely high stability in water under different pH conditions,which ma...A heteropore covalent organic framework(COF) integrating tetraphenylethene skeleton and catechol segment is designed and synthesized.It exhibits extremely high stability in water under different pH conditions,which makes it an excellent material for adsorptive removal of Cd(Ⅱ) from aqueous solutions with very fast adsorption kinetics,high uptake capacity,and good recyclability.展开更多
基金supported by the National Natural Science Foundation of China(22022107,22071197)
文摘Constructing two-dimensional(2D)supramolecular polymers with complicated hierarchical porosity significantly contributes to developing effective strategies to control delicate self-assembly architectures,thus facilitating the fabrication of advanced 2D organic functional materials.Here,we report utilizing cooperative cation-πand electrostatic interactions to construct a series of robust 2D heteropore supramolecular polymers(2D HPSPs)with hierarchical pore structures,in which hexagonal and rectangular pores are alternately and periodically arranged,and the pore sizes can be finely tuned.Remarkably,the as-prepared 2D HPSPs exhibit excellent iodine(I_(2))capture rate(a maximum K80%value is 2.25 g h^(-1)),and present a novel mechanism involving transport-adsorption spatiotemporal separation for rapid I_(2)capture.In this mechanism,the transport of free I_(2)is first conducted in large hexagonal pores,and then I_(2)can be preferentially adsorbed in small rectangular pores,thereby preventing the transfer channels from blocking and greatly improving the adsorption kinetics.
基金National Natural Science Foundation of China(No.21725404)Shanghai Scientific and Technological Innovation Project(No.18JC1410600)the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB20000000)financial support。
文摘A heteropore covalent organic framework(COF) integrating tetraphenylethene skeleton and catechol segment is designed and synthesized.It exhibits extremely high stability in water under different pH conditions,which makes it an excellent material for adsorptive removal of Cd(Ⅱ) from aqueous solutions with very fast adsorption kinetics,high uptake capacity,and good recyclability.
