Molecular Recognition Studies on Modified Cyclodextrins

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2001,（6）
• 页码范围: 533-544
• 页数: 12页
• 分类号: O6
• 语种: 英文

摘要

This account deacribes our research progress in recent years in the areas of the molecular recognition studies on modified cy clodextrins, including positively charged cyclodextrins, cy clodextrin derivatives with hydrophobic substituent, and dimeric cyclodextrins. Calorimetric titration and various spec trometric techniques were employed to determine the complex stability constants, as well as the thermodynamic parameters, for their inclusion complexation with diverse guest molecules. The results obtained have heen discussed from the viewpoint of size/shape-matching, induced-fit, geometric compensation, and multiple recognition. Thermodynamically, the compen satory relationship between △H and T△S was found to be ex hibited in the inclusion complexation of modified cyclodextrin.