Figure 2: Formation and characterization of capsule 1⊃AIBN.
From: Safe storage of radical initiators within a polyaromatic nanocapsule

(a) Schematic representation of the encapsulation of AIBN within capsule 1 in aqueous solution. 1H NMR spectra (400 MHz, room temperature, D2O/CD3CN (9/1)) of (b) capsule 1 and (c) 1⊃AIBN. (d) ESI-TOF MS spectrum of 1⊃AIBN. X-ray crystal structure of 1⊃AIBN: (e) space-filling (for AIBN) and cylindrical (for 1) representation and (f) space-filling representation (substituents and counterions are omitted for clarity).