Abstract
The selectivity and recognition behavior of cucurbit[n]uril (CB[n]) homologues (n=6,7,8) towards a ditopic guest containing two distinct binding sites is explored. CB6, CB7, and CB8 recognize and self-sort the binding sites according to their size, shape, and chemical nature. In the presence of both CB6 and CB8 a hetero[4]pseudorotaxane is formed.
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