Construction of a pillararene-based supramolecular polymer network and its application in efficient removal of dyes from water

Abstract

An AB-type monomer based on a pillar[5]arene host and an imidazolium salt guest was successfully synthesized through a facile way. This monomer can self-assemble into linear supramolecular polymers in chloroform....

Pillararene‐Based Supramolecular Polymers for Adsorption and Separation

“…For example, Wang and coworkers built a linear supramolecular polymer using imidazolium-pillar [5]arene as an AB-type monomer through the intermolecular host-guest interactions between the cavity of the pillar [5]arene and the imidazolium salt group (Figure 1b). [56] Moreover, the imidazolium salt-terminal endowed the linear supramolecular polymers with metal coordination sites toward Ag + , which could efficiently adsorb dyes in water.…”

“…Wang and coworkers built a SPN based on the intermolecular host-guest interaction of imidazolium-pillar [5]arene and metal coordination between imidazolium salt groups and Ag + (silver trifluoromethanesulfonate, AgCF 3 SO 3 ). [56] Such SPN system displayed a single-layer adsorption process toward four dyes in water, including MO (93.34%), MV (91.60%), RhB (88.39%), and MB (71.75%). The adsorption capacity of SPNs for MO can be ascribed to the easier combination between cationic SPN and anionic MO and the more accessible hydrophobic pores of SPN for the smallest and fat-soluble MO.…”

Tetraethylene glycol-based polymer networks for the efficient removal of radioactive methyl iodide and iodine vapor

“…Electron-rich and easy-tosynthesize pillar [5]arene (P[5]A) was introduced to the polymer to adjust the hydrophilicity and improve the I 2 adsorption capacity. [37][38][39][40][41][42][43][44][45] Two monomers, ATTEG-P5A and ATTEG, and a flexible cross-linker, DATTEG, were synthesized for one-pot copolymerization in N,N-dimethylformamide (DMF) initiated by azoisobutyronitrile (AIBN) (Schemes S1, S2 and Fig. S1-S15 †).…”

Supramolecular polymer network gels constructed by a pillararene-containing polymer and their applications in adhesion between semihard materials

“…7,[23][24][25][26][27][28] Pillararenes [29][30][31][32][33] are an emerging type of macrocyclic hosts after crown ethers, cyclodextrins, calixarenes, and cucurbiturils. On account of their excellent hostguest recognition properties, pillararenes have been applied in a variety of fields, for example, biomedical matrials, 34,35 supramolecular polymers, 36,37 light-harvesting systems, [38][39][40][41] adsorption, 42,43 encryption of information, 44 etc. However, supramolecular adhesive materials based on pillararenes have rarely been reported, 6,45 let alone adhesion between hard materials.…”