458529-20-9Relevant articles and documents
Molecular interactions of β-cyclodextrins with monolayers containing adamantane and anthraquinone guest groups
Swiech, Olga,Chmurski, Kazimierz,Bilewicz, Renata
experimental part, p. 461 - 466 (2010/10/21)
Complexing abilities of β-cyclodextrin (β-CD) towards anthraquinone derivatives in solution and immobilised on gold surfaces were studied by voltammetry. The association constant of β-CD with 1-aminoanthraquinone in solution was found to be 1.03±0.05×103 M-1 hence, smaller than that with anthraquinone. Capping the surface-immobilised N-(1-anthraquinone) lipoamide with β-CD led to decrease in the heterogeneous electron transfer rate constant due to the change in the immediate environment around the electroactive group. To detect the interactions of β-CD with a non-electroactive guest, N-(1-adamantane) lipoamide (AD-Lip), the CD was modified by the attachment of an anthraquinone group as the electroactive marker. The appearance of the voltammetric peak corresponding to the reduction of the anthraquinone side-group indicated the binding of β-CD to the AD-Lip self-assembled in a monolayer on the gold electrode.