Host–guest interactions between hemicucurbiturils and a hydroxyl-substituted Schiff base

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• 作者：Xian-Yi Jin ; Fang Wang ; Hang Cong ; Zhu Tao
• 关键词：Hemicucurbituril ; Schiff base ; Supramolecular chemistry ; Host–guest interaction ; Molecular recognition
• 刊名：Journal of Inclusion Phenomena and Macrocyclic Chemistry
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：86
• 期：3-4
• 页码：249-254
• 全文大小：1,374 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Organic Chemistry
  Food Science
  Crystallography
  
• 出版者：Springer Netherlands
• ISSN：1573-1111
• 卷排序：86

文摘

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.