一种新型Zn-MOF配合物在荧光检测水体金属离子中的应用研究  

Application of Zn-MOF Coordination Compound in the Detection of Metal Ions of Aquous Solution

作　　者：周勇[1] 杨怡[1] 朱肖 

机构地区：[1]常州工程职业技术学院科技处

出　　处：《化学试剂》2018年第1期81-84,共4页Chemical Reagents

基　　金：江苏高校品牌专业建设工程资助项目(PPZY-2015B178);江苏省前瞻性联合研究项目(BY2015032-01)

摘　　要：研究以一种水中稳定性良好的新型二维Zn-MOF配合物为荧光探针来检测水体中金属离子,该固态配合物在水溶液中稳定存在,在512 nm处有强的荧光发射峰。在所研究的11种能使该Zn-MOF配合物荧光信号发生猝灭的金属离子中,Fe^3＋的荧光猝灭效果最佳,猝灭百分数达90.9%,比荧光猝灭效果次之的Bi^3＋（猝灭百分数为59.2%）高出30%以上。Fe^3＋的荧光猝灭系数Ksv=2.51×10^3M^-1,表明该Zn-MOF配合物是一种性能良好的检测Fe^3＋的荧光探针。研究结果及其应用对于促进生物系统的稳定和环境保护等方面的研究都具有重要意义。A new 2-D Zinc metal organic framework（Zn-MOF） is used as a kind of fluorescence sensor to detect the metal ions in aqueous solution,which is stable in aqueous solution and showed a strong photoluminescence（PL） emission maxima at 512 nm.Although the emission peak of Zn-MOF can be quenched by eleven metal ions in aqueous solution,the ferric ion is the most effective quencher and can effectively quench the emission of Zn-MOF with a quench percentage（QP） of 90.9%,which is about 30% larger than that of the second best quencher（Bi^3＋ with a QP of 59.2%）.The quenching constant（Ksv） of Fe^3＋ is 2.51×10^3 M^-1,indicating that this framework can be employed as an excellent chemical sensor for identifying and quantifying Fe^3＋.The result and application is very important in the promoting the study of the stabilization of biological system and protection of the environment.

关 键 词：配合物 荧光检测 金属离子 

分 类 号：O657.34[理学—分析化学]