1. Host–guest interactions between hemicucurbiturils and a hydroxyl-substituted Schiff base
- Author
-
Xian-Yi Jin, Fang Wang, Hang Cong, and Zhu Tao
- Subjects
Schiff base ,Hydrogen ,010405 organic chemistry ,Stereochemistry ,Supramolecular chemistry ,chemistry.chemical_element ,macromolecular substances ,General Chemistry ,010402 general chemistry ,Condensed Matter Physics ,01 natural sciences ,Fluorescence ,0104 chemical sciences ,chemistry.chemical_compound ,Crystallography ,Molecular recognition ,chemistry ,Hemicucurbituril ,Proton NMR ,Phenol ,Food Science - Abstract
The host–guest interactions of hemicucurbit[6 and 12]urils with the Schiff base guest 1 has been investigated. 1H NMR spectra suggest hemicucurbit[6 and 12]urils bind to guest 1 with the formation of hydrogen bondings between the phenol hydroxyl group and carbonyl groups in the host. The formation of interaction complexes are also supported by fluorescence emission spectroscopy. The moderate association constants of the interaction complexes in a ratio of 1:1 are obtained to be (3.2 ± 0.6) × 105 and (5.5 ± 0.8) × 105 L mol−1, respectively, via non-linear curve fitting, which indicate that the formation of hydrogen bondings are important in the host–guest interactions.
- Published
- 2016