荧光法研究萘酚与胍的包合性质  

Study on the inclusion properties of naphthol with cucurbiurl by fluoremetry

作　　者：张海容[1] 王文艳[1] 陈金娥[1] 陶朱[2] 

机构地区：[1]忻州师范学院生化分析技术研究所,山西忻州034000 [2]贵州大学应用化学研究所,贵州贵阳550025

出　　处：《化学研究与应用》2007年第10期1153-1157,共5页Chemical Research and Application

基　　金：山西省自然科学基金(20051028)资助项目;山西省归国留学基金(2004067)资助项目

摘　　要：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.The inclusion properties of α- naphthol, β- naphthol with cucurbit[6] urll 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 × 10^4, 1.59 × 10^7, and 7.80 × 10^6, respectively. The thermodynamic function of the inclusion complex was determined by Benes - Hildebrand double-reciprocal method, △G^θ = -41.7 kJ · mol^-1,△G^θ=66.6 kJ · mol^-land △S^θ=354.8 J · mo1^-1 · K-1. According to the thermodymamic parameters, △G^θ 〈 0, it indicated that the inclusion process was a spontaneous reaction. △G^θ 〉 0, it was a endotherm reactlon;△G^θ 〉 0, it was a process of molecular randomness enhanced.

关 键 词：葫芦脲 萘酚 荧光 热力学函数 

分 类 号：O657.32[理学—分析化学]