Abstract
This review summarizes recent work on the chemistry of inclusion complexes formed between redox active guests and cucurbit [n]uril hosts. The large majority of the surveyed research concerns the hosts cucurbit[7]uril (CB7) and cucurbit[8]uril (CB8), while the guests are 4,4-bipyridinium (viologen) and ferrocene derivatives. The work includes dendronized guests, in which a guest residue is attached to a dendron in such a way that host-guest binding interactions are still possible. The main focus of the review is on the electrochemical behavior of the included guests. In general terms complexation by CB7 has a more pronounced effect on the ferrocene derivatives, giving rise to a measurable attenuation of the electrochemical kinetics. In contrast to this, the electrochemical kinetics of the viologen derivatives remains fast (in the voltammetric time scale, with scan rates up to 2 V s-1) upon inclusion complexation by CB7. The larger cavity host CB8 is extremely effective at mediating the redox-driven self-assembly of dendronized viologens.
Keywords: Host-guest complexes, electrochemistry, cucurbituril hosts, ferrocene, cobaltocenium, viologen, cucurbit[n]uril (CBn), glycoluril, cyclodextrin, spectroscopic methods, stoichiometry, aromatic protons, pseudorotaxane complex, electrochemical techniques, dialkoxybenzene, voltammograms, cobaltocenium (Cb), ferrocenemethanol, half-wave, dendrimers, metallocene binding
Current Organic Chemistry
Title: Cucurbituril Complexes of Redox Active Guests
Volume: 15 Issue: 1
Author(s): Suresh Gadde and Angel E. Kaifer
Affiliation:
Keywords: Host-guest complexes, electrochemistry, cucurbituril hosts, ferrocene, cobaltocenium, viologen, cucurbit[n]uril (CBn), glycoluril, cyclodextrin, spectroscopic methods, stoichiometry, aromatic protons, pseudorotaxane complex, electrochemical techniques, dialkoxybenzene, voltammograms, cobaltocenium (Cb), ferrocenemethanol, half-wave, dendrimers, metallocene binding
Abstract: This review summarizes recent work on the chemistry of inclusion complexes formed between redox active guests and cucurbit [n]uril hosts. The large majority of the surveyed research concerns the hosts cucurbit[7]uril (CB7) and cucurbit[8]uril (CB8), while the guests are 4,4-bipyridinium (viologen) and ferrocene derivatives. The work includes dendronized guests, in which a guest residue is attached to a dendron in such a way that host-guest binding interactions are still possible. The main focus of the review is on the electrochemical behavior of the included guests. In general terms complexation by CB7 has a more pronounced effect on the ferrocene derivatives, giving rise to a measurable attenuation of the electrochemical kinetics. In contrast to this, the electrochemical kinetics of the viologen derivatives remains fast (in the voltammetric time scale, with scan rates up to 2 V s-1) upon inclusion complexation by CB7. The larger cavity host CB8 is extremely effective at mediating the redox-driven self-assembly of dendronized viologens.
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Cite this article as:
Gadde Suresh and E. Kaifer Angel, Cucurbituril Complexes of Redox Active Guests, Current Organic Chemistry 2011; 15 (1) . https://dx.doi.org/10.2174/138527211793797800
DOI https://dx.doi.org/10.2174/138527211793797800 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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