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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1
|
| pubmed:dateCreated |
1990-11-19
|
| pubmed:abstractText |
The nature of the inclusion complexes of several cyclomalto-oligosaccharides (cyclodextrins, CDs) with azo dyes has been studied on the basis of 13C-n.m.r. chemical shifts, relaxation times, correlation times, and broadening and doubling of the n.m.r. signals. All CDs show the azo dye-induced shifts at the narrow-rim side of the CD, indicating that the azo dyes protrude from the cavity. CD-induced shifts of azo dyes depend on the hydrophobic nature of the cavity, van der Waals forces, as well as ring-current and deformation effects, and suggest inclusion essentially from the hydrophobic site. The broadening and the doubling of the 13C-n.m.r. signals, the altered relaxation and correlation times, as well as the temperature dependence for these phenomena, also provide particular information about the characteristic host-guest interactions.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jun
|
| pubmed:issn |
0008-6215
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
15
|
| pubmed:volume |
201
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
1-14
|
| pubmed:dateRevised |
2000-12-18
|
| pubmed:meshHeading | |
| pubmed:year |
1990
|
| pubmed:articleTitle |
13C-N.M.R. spectra of cyclomalto-oligosaccharides (cyclodextrins), their derivatives, and complexes with azo dyes.
|
| pubmed:affiliation |
Faculty of Pharmaceutical Sciences, Osaka University, Japan.
|
| pubmed:publicationType |
Journal Article
|