ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Photochemically induced fluorescence investigation of aβ-cyclodextrin: Azure A inclusion complex and determination of analytical parameters (1995)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 22 (1995), S. 235-247 
    Details
    ISSN: 1573-1111
    Keywords: Azure A ; β-cyclodextrin ; inclusion complex ; photochemically induced fluorescence spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The photooxidation of Azure A and fluorescence properties of Azure A and its photoproduct have been investigated in aqueous media and in the presence ofβ-cyclodextrin (β-CD). The fluorescence intensity of the complex formed between the photoproduct and β-CD was found to be three times higher than that of the uncomplexed Azure A photoproduct. A complex formation constant of 110±40 M−1 was calculated using the Benesi-Hildebrand treatment of the fluorescence emission data. Although the stoichiometry of the Azure A photoproduct: β-CD complex was found to be 1: 1, it seems that the Azure A structure is only partially included. Calibration graphs were plotted for the free Azure A photoproduct and the photogenerated product included in β-CD. The analytical parameters and quantification limits were determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00707086
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Effect of the Formation of Inclusion Complexes With β-Cyclodextrin on the Photoisomerization and Fluorescence Properties of Aromatic Norbornadiene Derivatives (1998)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 30 (1998), S. 227-241 
    Details
    ISSN: 1573-1111
    Keywords: Norbornadiene ; β-cyclodextrin ; inclusion complex ; photoisomerization ; fluorescence ; absorption spectrophotometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The valence photoisomerization of four aromatic norbornadiene (NBD)derivatives has been studied in ethanol and in 0.01 M β-cyclodextrin(β-CD) water–ethanol (v/v, 99/1) solution (WECD). Observedfirst-order rate constants are found to be of the same order of magnitude inethanol and WECD, ranging between 0.1 and 0.28 s-1, accordingto the compound. These photoisomerization kinetic properties are attributedto the formation of inclusion complexes between NBDs and β-CD. Thestoichiometry is 1 : 1, and association constants ranging between 310 and390 M-1 have been determined fluorimetrically, usingBenesi–Hildebrand plots and a nonlinear regression method. Thestructure of the inclusion complexes is discussed on the basis of AMIsemiempirical dimension calculations and photophysical properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007908709056
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...