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Effect of hexyl group on the host-guest interaction. (A) Typical extending (red) and relaxing (black) force-extension curves (left) and rupture force (RF) histograms (right) for the interaction between cucurbit[7]uril (CB7) and adamantane without ((A), Ad) and with ((B), Ad+) a positive charge. Adamantane is attached to the oligo without hexyl linker. (C) Percentage formation of the CB7 – Ad+ and CB7 – Ad complexes with (purple)
