Polycaps: reversibly formed polymeric capsules.
Described are assemblies consisting of polymeric capsules, "polycaps," formed from two calix[4]arene tetraureas covalently connected at their lower rims. In these structures self-assembly leads to reversibly formed capsule sites along a chain, reminiscent of beads on a string. Their dynamic behavior is characterized by 1H NMR spectroscopy through encapsulation of guest species, reversible polymerization, and the formation of sharply defined hybrid capsules.
Castellano
R K
RK
Skaggs Institute for Chemical Biology and Department of Chemistry, Scripps Research Institute, La Jolla, CA 92037, USA.
Rudkevich
D M
DM
Rebek
J
J