乙二胺N,N-二(6-氨基青霉烷酸)二乙酸与金属离子的相互作用  

Interaction of Ethylenediamine-N,N-Di(6-Aminopenicillanic Acid)-Diacetic Acid with Metal Ions

作　　者：谭家豪[1] 杨少兵[1] 马肖依[1] 郝志峰[1] 

机构地区：[1]广东工业大学轻工化工学院

出　　处：《光谱实验室》2013年第2期550-554,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：国家自然科学基金(批准号:21101032);广东省自然科学基金(批准号:06021469)

摘　　要：通过荧光光谱法研究了乙二胺N,N-二(6-氨基青霉烷酸)二乙酸(L_1)与10种金属离子的相互作用。结果表明:Co^(2+)、Mg^(2+)、Ca^(2+)和Mn^(2+)的加入对L_1的荧光发射没有明显影响;K^+、Fe^(3+)、Gd^(3+)、Ni^(2+)和Zn^(2+)的加入对L_1的荧光发射有微弱的猝灭作用;Cu^(2+)对L_1的荧光发射有明显的猝灭作用;当Cu^(2+)浓度为L_1的200倍时,猝灭率达到68.73%;计算得出Cu^(2+)对L_1的Stern-Volmer猝灭常数K_(sv)为106400L·mol^(-1)。The interactions of the compound ethylenediamine-N, N-di （6-amino penicillanic acid）- diacetic acid （L1）with 10 metal ions were studied by flurescence spectroscopy. The results showed that the flurescence intensity of compound L1 was not affected significantly by Co^2＋, Mg^2＋, Ca^2＋ and Mn^2＋; The flurescence intensity of compound Llwas quenched weakly by K^＋ ,Fe^3＋ ,Gd^3＋, Ni^2＋ and Zn^2＋; But the flurescence intensity of compound L1 was quenched significantly by Cu^2＋. When the concentration of Cuz＋ is 200 times of compound Ll,the quenching rate is 68.73%. And Stern-Volmer quenching constant Ksv. is 106400L· mol^-1.

关 键 词：荧光光谱 金属离子 猝灭 

分 类 号：O622.5[理学—有机化学] O657.32[理学—化学]