Investigation of host-guest stability constants of calix[n]arenes complexes with aromatic molecules by RP-HPLC method.
Under reversed-phase high-performance liquid chromatographic conditions [Spherisorb ODS 1 stationary phase, UV detection at 254 nm, and acetonitrile-dichloromethane-acetic acid-methyl-tert-butylether (84.6/4.5/0.9/10, v/v/v/v) as the mobile phase], adding p-tert-butylcalix[8] (10(-5)-3.10(-5))-[12]arenes (10(-5)-4.10(-5) mol/L) to the mobile phase leads to decreased sorption of aromatic solutes on the surface of the sorbent because of the formation of host-guest inclusion complexes between the calixarenes and the aromatic molecules. Stability constants of the complexes (781-9338M(-1)) are determined from the relationship between the solute capacity factors and the calixarene concentration in the mobile phase.
Laboratoire de Chimie Industrielle, CNRS-UMR 5078, Université Claude Bernard-Lyon1, 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France.
R
R
Baudry
O
O
Kalchenko
I
I
Dumazet-Bonnamour
F
F
Vocanson
R
R
Lamartine