ISSN:
1573-1111
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The complex formation between cyclodextrins (α-, β-, γ-CD's and dimethyl-\-CD) and quinones (three 9, 10-anthraquinone sulphonates and two 1,4-naphthoquinones) in the water-ethylene glycol 1:1 mixture solution at 77 K was investigated using the nπ* phosphorescence spectra and their excitation spectra and lifetimes of the quinones. It was concluded on the basis of the experimental results that the complexes have various structures according to the CD-quinone combination used. Vitamin K3 was found to form the photodimer very efficiently in the presence of γ-CD. The assumed CD:quinone ratios of the complexes are given.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00662243
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