Amine-triggered molecular capsules using dynamic boronate esterification

Boron-contained molecular capsules triggered by amines are described for the first time; when Et3N was employed as a chemical stimulus the Lewis acid Et3NH+, produced by solvolysis reaction on the boron, was found to be encapsulated in the internal cavity, whereas use of (Bu3N)-Bu-n led to the related dynamic capsule capable of accommodating several guest species including Cs+.