Self-assembly process between phenolic sectors and formaldehyde molecules under high-temperature conditions to afford oligomeric systems like resins , monoliths , and calixarenes
[9, 10] have been the focus of interest over recent years.
Host-guest chemistry has attracted great attention in the field of separation and/or extraction of alkaline, rare earth, and divalent heavy metal ions with calixarenes
and their ester derivatives.
Cucurbit[n]urils (CB[n]s), along with crown ethers, cyclodextrins, and calixarenes
, are the fourth-generation macrocyclic hosts that have played crucial roles in supramolecular chemistry in recent decades [11-15].
, known extensively in supramolecular chemistry with their increasing significance have joined these agents.
Revisited, Royal Society of Chemistry, London, UK, 1998.
Stoikova, "A cholinesterase sensor based on a graphite electrode modified with 1,3-disubstituted calixarenes
," Journal of Analytical Chemistry, vol.
In the recent decade, macrocyclic compounds such as cyclodextrins [12-16], calixarenes
[1, 17-19], and crown ethers [11, 20] intercalated into LDHs have attracted intensive attention because of their potential novel properties.
Consequently due to the convenient one pot synthesis from cheap raw materials and regenerable nature of their impended resins; the calixarenes
a class of synthetic macrocyclic oligomers possessing cup like shape having defined upper and lower rims with central annulus have been widely used in adsorption processes.
are also known as the third generation supramolecules after cyclodextrins and crown ethers .
Synthesis of macromolecular structures such as dendrimers, calixarenes
, and functionalized rotaxanes have been achieved with great success using this chemistry.
Hofs group has been working on an alternative approach based on calixarenes
. These cup-shaped macromolecules bind preferentially to certain histone code elements.