Abstract
N-ethyl-N′-hexadecyl-4,4′-bipyridinium bromide (C16VBr2) and N-ethyl-N′-octadecyl-4,4′-bipyridinium bromide (C18VBr2) were used as electroactive probes to assess the interactions between surfactants and cyclodextrins. Cyclic voltammetry, visible spectroscopy, fluorescence spectroscopy and surface tension techniques were used to detect the formation of complexes between the surfactant viologen probes and α- and β-cyclodextrins. The voltammetric results suggest the formation of inclusion compounds in which the hydrophobic tail of the surfactant viologens penetrate the cyclodextrin cavity. The dimerization of the viologen cation radicals is essentially suppressed by the presence of α-cyclodextrin (ACD) while no effects are observed in the presence of β-cyclodextrin (BCD). The observed results are best explained by the relative solubility in aqueous media of each of the inclusion complexes in the several accessible viologen oxidation states.
| Original language | English |
|---|---|
| Pages (from-to) | 107-115 |
| Number of pages | 9 |
| Journal | Journal of Inclusion Phenomena and Molecular Recognition in Chemistry |
| Volume | 7 |
| Issue number | 1 |
| DOIs | |
| State | Published - Feb 1 1989 |
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Keywords
- Cyclodextrin
- surfactant
- viologens
- voltammetry
ASJC Scopus subject areas
- Condensed Matter Physics
- Chemistry(all)
Cite this
The interactions of surfactant viologens with cyclodextrins. / Kaifer, Angel; Quintela, Pablo A.; Schuette, Jodi M.
In: Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, Vol. 7, No. 1, 01.02.1989, p. 107-115.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The interactions of surfactant viologens with cyclodextrins
AU - Kaifer, Angel
AU - Quintela, Pablo A.
AU - Schuette, Jodi M.
PY - 1989/2/1
Y1 - 1989/2/1
N2 - N-ethyl-N′-hexadecyl-4,4′-bipyridinium bromide (C16VBr2) and N-ethyl-N′-octadecyl-4,4′-bipyridinium bromide (C18VBr2) were used as electroactive probes to assess the interactions between surfactants and cyclodextrins. Cyclic voltammetry, visible spectroscopy, fluorescence spectroscopy and surface tension techniques were used to detect the formation of complexes between the surfactant viologen probes and α- and β-cyclodextrins. The voltammetric results suggest the formation of inclusion compounds in which the hydrophobic tail of the surfactant viologens penetrate the cyclodextrin cavity. The dimerization of the viologen cation radicals is essentially suppressed by the presence of α-cyclodextrin (ACD) while no effects are observed in the presence of β-cyclodextrin (BCD). The observed results are best explained by the relative solubility in aqueous media of each of the inclusion complexes in the several accessible viologen oxidation states.
AB - N-ethyl-N′-hexadecyl-4,4′-bipyridinium bromide (C16VBr2) and N-ethyl-N′-octadecyl-4,4′-bipyridinium bromide (C18VBr2) were used as electroactive probes to assess the interactions between surfactants and cyclodextrins. Cyclic voltammetry, visible spectroscopy, fluorescence spectroscopy and surface tension techniques were used to detect the formation of complexes between the surfactant viologen probes and α- and β-cyclodextrins. The voltammetric results suggest the formation of inclusion compounds in which the hydrophobic tail of the surfactant viologens penetrate the cyclodextrin cavity. The dimerization of the viologen cation radicals is essentially suppressed by the presence of α-cyclodextrin (ACD) while no effects are observed in the presence of β-cyclodextrin (BCD). The observed results are best explained by the relative solubility in aqueous media of each of the inclusion complexes in the several accessible viologen oxidation states.
KW - Cyclodextrin
KW - surfactant
KW - viologens
KW - voltammetry
UR - http://www.scopus.com/inward/record.url?scp=0040765169&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0040765169&partnerID=8YFLogxK
U2 - 10.1007/BF01112788
DO - 10.1007/BF01112788
M3 - Article
AN - SCOPUS:0040765169
VL - 7
SP - 107
EP - 115
JO - Journal of Inclusion Phenomena and Macrocyclic Chemistry
JF - Journal of Inclusion Phenomena and Macrocyclic Chemistry
SN - 1388-3127
IS - 1
ER -