基于苯并吲哚的荧光探针对Al3+的识别及应用  

A Benzoindole-Based Probe for Recognition of Al3+ and Its Application

作　　者：张莹莹 王丽艳[1] 赵冰[1] 宋波[1] ZHANG Yingying;WANG Liyan;ZHAO Bing;SONG Bo(College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar,Heilongjiang 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院

出　　处：《应用化学》2020年第1期88-95,共8页Chinese Journal of Applied Chemistry

基　　金：黑龙江省科学基金留学归国人员科学基金(LC2017004);黑龙江省教育厅基本科研业务专项(135209209)’’黑龙江省自然科学基金联合引导项目(LH2019B021)资助~~

摘　　要：设计合成了一种结构简单且基于苯并吲哚衍生物的荧光探针(H),通过紫外-可见吸收光谱(UV-Vis)和荧光发射光谱研究了荧光探针H对金属阳离子的识别性能。结果表明,在乙醇(EtOH)和4-羟乙基哌嗪乙磺酸(HEPES)缓冲液(pH=7.4)(体积比为1∶1)的混合溶液体系中,荧光探针H对Al^3+有专一性识别且不受其它金属阳离子干扰。探针H与Al^3+的配合比为1∶1,配合常数Ka为0.52×10^2 mol/L,检测限为1.75μmol/L。探针通过荧光发射光谱对水样及食品中的Al^3+进行了定量检测,具有一定实际应用价值。A simple fluorescence probe based on benzoindole(H)was designed and synthesized.The recognition performance of the probe for metal cations was studied by ultraviolet-visible absorption spectrophotometry(UV-Vis)and fluorescence emission spectra.The results show that probe H in the mixed system of ethanol(EtOH)and 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid(HEPES)(pH=7.4)(volume ratio 1∶1)has specific recognition of Al 3+and is not impacted by other metal cations.The complex ratio of probe H and Al 3+is 1∶1,the association constant K a is 0.52×10^2 mol/L and the detection limit is 1.75μmol/L.The quantitative detection of Al^3+ in water and food samples proves that the probe has potential applications.

关 键 词：荧光探针 水样 苯并吲哚 AL^3+ 

分 类 号：O657.3[理学—分析化学]