Cavitand
Encyclopedia
Host-guest chemistry
In supramolecular chemistry, host-guest chemistry describes complexes that are composed of two or more molecules or ions that are held together in unique structural relationships by forces other than those of full covalent bonds. Host-guest chemistry encompasses the idea of molecular recognition...
with guest molecules of a complementary shape and size. Examples include cyclodextrins, calixarene
Calixarene
A calixarene is a macrocycle or cyclic oligomer based on a hydroxyalkylation product of a phenol and an aldehyde. The word calixarene is derived from calix or chalice because this type of molecule resembles a vase and from the word arene that refers to the aromatic building block...
s, pillararene
Pillararene
Pillararenes are macrocycles composed of hydroquinone units linked in the para position. They are structurally similar to the cucurbiturils and calixarenes that play an important part in host-guest chemistry. arene], the first pillarene, was synthesized by Tomoki Ogoshi at Kanazawa University....
s and cucurbituril
Cucurbituril
Cucurbiturils are methylene-linked macrocyclic molecules made of glycoluril [=C4H2N4O2=] monomers. The oxygen atoms are located along the edges of the band and are tilted inwards, forming a partly enclosed cavity...
s.