Calixarene-facilitated transfer of alkali metal ions across the polarised liquid–liquid interface

Interaction of acridine-calix[4]arene with DNA at the electrified liquid|liquid interface

“…Calix [4]arene models were generated from the experimental nuclear coordinates of the neutral tetraethyl-p-tert-butyl calix [4]arene tetraacetate structure [17]. Force field parameters for the parent methoxy-p-tert-butylcalix [4]arene host were taken from published data [18] and acridine derivatives were created by replacing the methoxy groups with two propoxy and two neutral/protonated acridine groups, and described using existing parameters [19].…”

“…In the neutral form (pH > pKa), there are significant zones of net negative charge on the the alkoxy oxygens and acridine ring nitrogens ( Fig. 2(A)) which may serve as binding sites for cations [17]. When the acridine moieties are protonated ( Fig.…”

Electrochemistry of dopamine at the polarised liquid|liquid interface facilitated by an homo-oxo-calix[3]arene ionophore

“…This was done by recording the evolution of the half-wave potential for the ion transfer process with the logarithm of cation concentration, as previously described [28,29]. In these studies, the dopamine concentration was maintained in excess relative to the ionophore concentration present in the organic phase.…”

“…Previous studies have detailed methods to extract the association constant for transfer by interfacial complexation (or assisted, facilitated ion transfer) from voltammetric data. These methods relay on the dependence of D/ 1/2 on the concentration of cation, as given by the general expression [28,29,31]:…”

Selective Electrochemical Recognition ofo‐Phenylenediol by a Novel Calix[4]arene Derivative

“…7 The dynamic electrochemical property of calixarenes bearing no overtly electrochemically signalling functionality has recently begun to be investigated by various research groups. [8][9][10][11][12][13] As the conventional method, calixarenes are immobilized on the solid-state electrode (e.g. gold) surface through specific chemisorption or the self-assembly mechanism.…”