Abstract
The complexation behavior of 6-amino-6-deoxy-γ-cyclodextrin (CD), 6A,6X-diamino-6A,6X-deoxy-γ- CDs and 3A-amino-3A-deoxy-altro-γ-CD with 2-anthracenecarboxylic acid (AC) was studied by NMR, UV-vis and circular dichroism spectroscopy. These modified γ-CD derivatives were found to form stable 1:2 host-guest ternary complexes with AC in aqueous solution. Compared with native γ-CD, the primary-face-aminated γ-CDs exhibited remarkably enhanced overall association constants as a result of the additional electrostatic interactions between the oppositely charged host and guest. In contrast, the ternary complex formation of the secondary-face-aminated γ-CD with AC was hindered.
Original language | English |
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Pages (from-to) | 433-437 |
Number of pages | 5 |
Journal | Journal of Inclusion Phenomena and Macrocyclic Chemistry |
Volume | 57 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 2007 Apr |
Externally published | Yes |
Keywords
- Amino-γ-cyclodextrin
- Anthracenecarboxylic acid
- Electrostatic interaction
- Host-guest complex
ASJC Scopus subject areas
- Food Science
- Chemistry(all)
- Condensed Matter Physics