The complexation of ferrocene derivatives by a water-soluble calix[6]arene |
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Authors: | Litao Zhang Alba Macias Rahimah Isnin Tianbao Lu George W. Gokel Angel E. Kaifer |
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Affiliation: | (1) Chemistry Department, University of Miami, 33124 Coral Gables, FL, USA;(2) Department of Molecular Biology and Pharmacology, Washington University Medical School, 63110 St. Louis, MO, USA |
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Abstract: | The complexation of several ferrocene derivatives by the water-soluble hostp-sulfonato-calix[6]arene was investigated using electrochemical and1H-NMR spectroscopic techniques. The electrochemical results indicate that both oxidation states of the guests are bound to the calixarene host, although the oxidized (ferrocenium) forms are complexed more strongly than the reduced (ferrocene) species.1H-NMR spectroscopic data indicate that the complexation phenomena involves the inclusion of the guest's ferrocene moiety into the flexible calixarene cavity.This paper is dedicated to the commemorative issue on the 50th anniversary of calixarenes. |
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Keywords: | Inclusion complexation sulfonated calixarenes redox-active guests voltammetry apolar binding |
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