摘 要:利用CN-誘導的邁克爾加成反應阻斷探針的分子內(nèi)電荷轉(zhuǎn)移過程(ICT),成功設(shè)計合成一種新型的熒光比率型CN-熒光探針。該探針對CN-具有顯著的熒光比率響應,其熒光光譜藍移128 nm。相對于其他干擾離子,探針對CN-具有較高的選擇性和專一性。通過以上實驗為監(jiān)測CN-濃度提供一個簡單有效并具有較高靈敏度的分析方法。
關(guān)鍵詞:熒光探針;比率型;分子內(nèi)電荷轉(zhuǎn)移;香豆素衍生物
文獻標志碼:A 文章編號: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