Dynamic materials fabricated from water soluble pillar[n]arenes bearing triethylene oxide groups

Abstract

Pillar[n]arenes are a new kind of supramolecular macrocyclic hosts which have developed rapidly due to their unique topology and high functionality, giving rise to many applications in the construction of interesting and functional materials. Among them, water-soluble pillar[n]arenes bearing triethylene oxide (TEO) chains have drawn increasing research interest due to their advantageous properties. In this review, we summarized the recent progress of dynamic materials fabricated from water soluble pillar[n] arenes bearing TEO groups, including thermoresponsive materials with lower critical solution temperature (LCST) behavior, cyclic host liquids, and smart windows. It is anticipated that more and more 'smart' supramolecular materials based on modified pillar[n]arenes will be developed in this burgeoning area of research.

Stimuli-responsive nanocarriers constructed from pillar[n]arene-based supra-amphiphiles

“…[28][29][30][31][32][33][34][35][36] The interesting pillar-shape architectures of pillar[n]arenes endow them with the ability to bind with a variety of guest molecules. 37 As a result, pillar[n]arenes exhibit significant potentials in building various functional materials, 38 such as dynamic organogels or hydrogels, [39][40][41][42][43][44][45] functional supramolecular polymers, [46][47][48][49][50][51][52] transmembrane channels, 53 nonporous adaptive crystals, [54][55][56][57] and other nanomaterials. 58,59 Meanwhile, the development of water-soluble pillar[n]arene (WP[n]) based supra-amphiphiles has also progressed rapidly in recent years due to the simplicity of modification of the pillar[n]arene framework.…”

Porphyrin-Based Organoplatinum(II) Metallacycles With Enhanced Photooxidization Reactivity

“…Macrocyclic host compounds, mainly including crown ethers (Zhu et al, 2012;Liu et al, 2017), cyclodextrins (Lai et al, 2017;Li et al, 2019), calixarenes (Kim et al, 2012;Nimse and Kim, 2013), cucurbiturils (Kim et al, 2007;Barrow et al, 2015), and pillararenes (Xue et al, 2012;Ogoshi et al, 2016;Yao et al, 2017;Chen J. et al, 2019), are the foundation of the development of supramolecular chemistry (Dong et al, 2014;Sun et al, 2018;Gao L. et al, 2019;Xiao et al, 2019). During the past two decades, the syntheses, host-guest properties, and applications of macrocycles have been widely investigated Wu and Yang, 2019).…”

Supramolecular Polymers With AIE Property Fabricated From a Cyanostilbene Motif-Derived Ditopic Benzo-21-Crown-7 and a Ditopic Dialkylammonium Salt

“…Macrocycle-based host-guest interaction is an important driving force in supramolecular chemistry. For example, we have reviewed a series of supramolecular materials based on pillararene (Xiao et al, 2019a , f , h ). Benzo-21-crown-7 (B21C7) is one of the most important crown ethers (Zhang et al, 2007 ), and it shows interesting applications like adhesive materials (Dong et al, 2017 ; Zhang et al, 2019 ).…”