The stability constants of inclusion complexes of some benzene derivations with β cyclodextrin (β CD) in aqueous solution were studied by ultraviolet spectrophotometry at 20℃,30℃,40℃ and 50℃,respectively.The app...The stability constants of inclusion complexes of some benzene derivations with β cyclodextrin (β CD) in aqueous solution were studied by ultraviolet spectrophotometry at 20℃,30℃,40℃ and 50℃,respectively.The apparent thermodynamic parameters were also obtained.The results demonstrated that van der Waals force (Δ H <0,Δ S <0,governed by Δ H ) is the major driving force of inclusion systems of benzene derivations with β CD.On the other hand,in the case of inclusion complex of vanillin,the hydrogen bonding may also play a role in complexation.展开更多
文摘The stability constants of inclusion complexes of some benzene derivations with β cyclodextrin (β CD) in aqueous solution were studied by ultraviolet spectrophotometry at 20℃,30℃,40℃ and 50℃,respectively.The apparent thermodynamic parameters were also obtained.The results demonstrated that van der Waals force (Δ H <0,Δ S <0,governed by Δ H ) is the major driving force of inclusion systems of benzene derivations with β CD.On the other hand,in the case of inclusion complex of vanillin,the hydrogen bonding may also play a role in complexation.
