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Molecular recognition study on a supramolecular system (VIII)

Authors
  • Yu, Liu1
  • Yimin, Zhang1
  • Aidi, Qi1
  • Qiuchang, Wang1
  • Rongti, Chen1
  • 1 Nankai University, Department of Chemistry, Tianjin, 300071, China , Tianjin
Type
Published Article
Journal
Chinese Science Bulletin
Publisher
Science in China Press
Publication Date
Feb 01, 1998
Volume
43
Issue
4
Pages
286–289
Identifiers
DOI: 10.1007/BF02884537
Source
Springer Nature
Keywords
License
Yellow

Abstract

The fluorescence spectral titrations have been performed in phosphate buffer solution (pH 7.2) at room temperature to give the stability constants for inclusion complexation of a series of chemically modified β-cyclodextrins bearing aromatic groups with adamantanol. Thc molecular recognition mechanism is discussed from the viewpoint of the structural factors, electron effect of the substitutent groups and thc size and chain length of the fluorophore. The results indicate that the complex stability of the cyclodextrin derivatives bearing a positively charged pyridinio moiety can be enhanced by the electrostatic interaction between the host cyclodextrins and the adamantanol guest and the microenvironment change plays a crucial role in the inclusion complexation.

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