Synergistic effect of ligating and ionic functions, prearranged on a calix[4]arene.
The covalent attachment of two CMPO-functions and two anionic Cosan groups to the narrow rim of tert-butylcalix[4]arene leads to a dramatic increase of the extraction efficiency for the cone isomer; Am(3+) is removed from 5 x 10(-8) M solution to more than 99% by a single extraction step with a 3 x 10(-6) M solution of the calixarene.
Mikulásek
Libor
L
Institute of Inorganic Chemistry, 25068, Rez near Prague, Czech Republic.
Grüner
Bohumír
B
Danila
Crenguta
C
Bohmer
Volker
V
Cáslavský
Josef
J
Selucký
Pavel
P