The inclusion properties of α-naphthol,β-naphthol with cucurbit[6]uril and cucurbit[7]uril were studied by fluoremetry,respectively.The experimental results showed that inclusion complex of α-naphthol/cucurbit[6]uril,α-naphthol/cucurbit[7]uril and β-naphthol/ cucurbit[7]uril were formed with a ratio of 1:2,and their inclusion constants were 2.01×104,1.59×107,and 7.80×106,respectively.The thermodynamic function of the inclusion complex was determined by Benes-Hildebrand double-reciprocal method,ΔGθ =-41.7 kJ·mol-1,ΔHθ=66.6 kJ·mol-1 and ΔSθ=354.8 J·mol-1·K-1.According to the thermodymamic parameters,ΔGθ<0,it indicated that the inclusion process was a spontaneous reaction.ΔHθ>0,it was a endotherm reaction;ΔSθ>0,it was a process of molecular randomness enhanced.
