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Cucurbit[n]urils (Q[n]s), a relatively new class of macrocyclic hosts with a rigid hydrophobic cavity and two identical carbonyl-fringed portals, have attracted much attention in supramolecular chemistry. Compared to the chemistry of cyclodextrins and calixarenes, the development of cucurbit[n]uril chemistry has been relatively slow, mainly due to the high chemical stability of Q[n]s, which makes...
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