Selective pairwise encapsulation using directional interactions.
Trimethylamine N-oxide and trimethylphosphine oxide guests are pairwise encapsulated in a dimeric capsule self-assembled from a tetraurea aryl extended calix[4]pyrrole. The capsule possesses polar functional groups in its interior capable of controlling the orientation of the included guests. A modest selectivity is observed during the encapsulation process that is beyond the controls of size or shape exclusion.
ICREA and Institute of Chemical Research of Catalonia (ICIQ), 43007 Tarragona, Spain.
Guzmán
G
Gil-Ramírez
Marcos
M
Chas
Pablo
P
Ballester