摘 要:利用CN-诱导的迈克尔加成反应阻断探针的分子内电荷转移过程(ICT),成功设计合成一种新型的荧光比率型CN-荧光探针。该探针对CN-具有显著的荧光比率响应,其荧光光谱蓝移128 nm。相对于其他干扰离子,探针对CN-具有较高的选择性和专一性。通过以上实验为监测CN-浓度提供一个简单有效并具有较高灵敏度的分析方法。
关键词:荧光探针;比率型;分子内电荷转移;香豆素衍生物
文献标志码:A 文章编号:1674-5124(2015)12-0045-04
Synthesis and application of ratiometric fluorescent probe for CN- determination
CHEN Song, HOU Peng, WANG Jing, LIU Lei, WANG Xin
(College of Pharmacy,Qiqihar Medical University,Qiqihar 161006,China)
Abstract: It reports a new type of CN- fluorescence ratiometric fluorescent probe by using the CN- induced Michael addition reaction to block intermolecular charge transfer process(ICT). The probe displayed remarkable fluorescence ratio towards CN-. With the addition of CN-, the fluorescence spectrum of the probe blue shifted by 128 nm. The probe exhibited high selectivity and sensitivity towards CN- over other interfering ions. based on the result, it provides a simple, effective and high sensitivity analysis method for monitoring the concentration of CN-.
Keywords: fluorescence probe; ratiometric; ICT; coumarin derivative