香豆素衍生物与β-环糊精包络物荧光性质的研究  

FLUORESCENCE PROPERTY INVESTIGATION ON THE COMPLEX COMPOUND OF CONMARIN- CYCLODEXTRIN SYSTEM

作　　者：赵慧春[1] 郭金雪[1] 易筱筠[1] 刘顺果 张永安 

机构地区：[1]北京师范大学化学系 [2]北京师范大学分析测试中心,北京100875

出　　处：《北京师范大学学报（自然科学版）》1993年第3期377-380,共4页Journal of Beijing Normal University(Natural Science)

摘　　要：用荧光法研究了香豆素衍生物CND_(500)在β-CD水溶液中和在乙醇及非离子表面活性剂(n-Saf)Triton X-100等胶束溶液中的荧光特性,发现CND_(500)在β-CD水溶液中的荧光强度(F),荧光偏振度(P)、相对量子效率((?))、荧光寿命(τ)均比CND_(500)在水溶液中增大,表明CND_(500)与β-CD发生络合,测得络合常数为1 560 L·mol^(-1),还观察到CND_(500)在β-CD水溶液中与在乙醇和n-Saf中的F,P,(?),τ值接近.这些事实可以推断β-CD空腔极性与乙醇极性相类似.Fluorescence property of coumarin derivative CND_(500) with β-cyclodextrin (β-CD) in aqueous solution and CND_(500) with ethyl alcohol, n-saf Triton X-100 micelle solution are examined by fluorescence method. It is observed that the fluorescence peak, relative intensity (F), polarization (P), relative quantum yield ((?)) and life time (ι) of the CND_(500) molecule in aqueous solution of β-CD reveal hypsochromic shift and increment respectively relative to CND_(500) molecule in aqueous solution. The results indicate that the CND_(500) complex with β-CD, the measured complexation constant is 1 560 L·mol^(-1). It is found that the F, P, (?),ιof CND_(500) with β-CD are near to those in the ethyl alcohol and n-saf Triton X-100. These facts infered that the pol rity of β-CD cavity is the same as that of ethyl alcohol.

关 键 词：Β-环糊精 香豆素衍生物 荧光法 

分 类 号：O657.31[理学—分析化学]