Molecular recognition study on a supramolecular system (VIII) |
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Authors: | Liu Yu Zhang Yimin Qi Aidi Wang Qiuchang Chen Rongti |
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Institution: | (1) Department of Chemistry, Nankai University, 300071 Tianjin, China |
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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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Keywords: | inclusion complexation cyclodextrin fluoroscopy supramolecule |
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