Table 1.

Chemical structures and diameters of traditional macrocyclic hosts.

Macrocyclic Host	Chemical Structure	Diameter (Å)	Ref.
α-Cyclodextrin		4.7–5.3	[11]
β-Cyclodextrin		6.0–6.5	[12]
γ-Cyclodextrin		7.5–8.3	[14]
Per-ethylated pillar[5]arene		4.7	[4]
Per-ethylated pillar[6]arene		6.7	[62]
Cucurbit[6]uril		3.9	[56]
Cucurbit[7]uril		5.4	[56]
Cucurbit[8]uril		6.9	[56]