Affiliation:
1. Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy Conversion School of Chemistry and Chemical Engineering Shandong University No. 27 Shanda South Road Ji'nan 250100 P. R. China
2. School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
Abstract
AbstractIn order to overcome the limitations of supramolecular organic cages for their incomplete accessibility of active sites in the solid state and uneasy recyclability in liquid solution, herein a nitrogen‐rich organic cage is rationally linked into framework systems and four isoreticular covalent organic frameworks (COFs), that is, Cage‐TFB‐COF, Cage‐NTBA‐COF, Cage‐TFPB‐COF, and Cage‐TFPT‐COF, are successfully synthesized. Structure determination reveals that they are all high‐quality crystalline materials derived from the eclipsed packing of related isoreticular two‐dimensional frameworks. Since the nitrogen‐rich sites usually have a high affinity toward iodine species, iodine adsorption investigations are carried out and the results show that all of them display an enhancement in iodine adsorption capacities. Especially, Cage‐NTBA‐COF exhibits an iodine adsorption capacity of 304 wt%, 14‐fold higher than the solid sample packed from the cage itself. The strong interactions between the nitrogen‐rich sites and the adsorbed iodine species are revealed by spectral analyses. This work demonstrates that, utilizing the reticular chemistry strategy to extend the close‐packed supramolecular organic cages into crystalline porous framework solids, their inherent properties can be greatly exploited for targeted applications.
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
11 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献