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.
| Original language | English |
|---|---|
| Pages (from-to) | 27-38 |
| Number of pages | 12 |
| Journal | Current Organic Chemistry |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 28 2011 |
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Keywords
- Cobaltocenium
- Cucurbituril hosts
- Electrochemistry
- Ferrocene
- Host-guest complexes
- Viologen
ASJC Scopus subject areas
- Organic Chemistry
Cite this
Cucurbituril complexes of redox active guests. / Gadde, Suresh; Kaifer, Angel.
In: Current Organic Chemistry, Vol. 15, No. 1, 28.01.2011, p. 27-38.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Cucurbituril complexes of redox active guests
AU - Gadde, Suresh
AU - Kaifer, Angel
PY - 2011/1/28
Y1 - 2011/1/28
N2 - 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.
AB - 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.
KW - Cobaltocenium
KW - Cucurbituril hosts
KW - Electrochemistry
KW - Ferrocene
KW - Host-guest complexes
KW - Viologen
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UR - http://www.scopus.com/inward/citedby.url?scp=78951489456&partnerID=8YFLogxK
U2 - 10.2174/138527211793797800
DO - 10.2174/138527211793797800
M3 - Article
VL - 15
SP - 27
EP - 38
JO - Current Organic Chemistry
JF - Current Organic Chemistry
SN - 1385-2728
IS - 1
ER -