马来腈修饰的钡离子荧光传感器  

Diaminomaleonitrile-based fluorescent probe for Ba^(2+)

作　　者：孔春燕 赵宏睿 胡凯丽 崔雪娇 刘世楷 王广银 王芳 陈玉婷 KONG Chunyan;ZHAO Hongrui;HU Kaili;CUI Xuejiao;LIU Shikai;WANG Guangyin;WANG Fang;CHEN Yuting(School of Chemistry and Chemical Engineering,Dezhou University,Dezhou,Shandong 253023,China)

机构地区：[1]德州学院化学化工学院,山东德州253023

出　　处：《山东科技大学学报（自然科学版）》2022年第5期68-74,共7页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：山东省自然科学基金项目(ZR2020MB012);山东省大学生创新创业计划项目(S202010448028)。

摘　　要：通过荧光发射光谱测试探讨了对氰基苯-马来腈希夫碱对不同金属离子的选择识别性能。系统的光学性质研究得知:在乙腈水溶液中,对氰基苯-马来腈希夫碱与Ba^(2+)以1∶1的化学计量比络合后,其在435 nm位置最大荧光发射强度增加了1.92倍,并伴随19 nm红移到454 nm,表明该化合物对Ba^(2+)具有明显的荧光检测信号响应,最低检测限为4.2μM;金属离子及酸性环境干扰实验显示对氰基苯-马来腈希夫碱具有良好的抗干扰性能。结果表明,对氰基苯-马来腈希夫碱可灵敏检测中性和酸性环境中Ba^(2+)的潜能。在实际样品中的应用表明,对氰基苯-马来腈希夫碱能有效地检测实际水样中的Ba^(2+)。The p-cyanobenzaldehyde-diaminomaleonitrile-based Schiff compound was synthesized and its sensing properties to different metal ions were studied through the fluorescence emission spectroscopy.Systemic optical investigation showed that after the complexation of this compound with Ba^(2+) with a stoichiometric ratio of 1∶1 in acetonitrile-water solution,the fluorescence emission intensity at 435 nm increased by 1.92 times,synchronously accompanied by red-shift of 19 nm to 454 nm,suggesting that it has obvious sensitive fluorescence response to Ba^(2+),with a minimum detection limit of 4.2μM.Moreover,the metal ion and acid environment disturbance experiment displayed better anti-disturbance performance to this p-cyanobenzaldehyde-diaminomaleonitrile-based Schiff.These results endow p-cyanobenzaldehyde-diaminomaleonitrile-based Schiff compound the sensitive sensing ability to Ba^(2+) in neutral and acid environments.The application in actual samples shows that this compound exhibits excellent detection potential to Ba^(2+) in tap and river water.

关 键 词：荧光传感器 马来腈 希夫碱 钡离子 

分 类 号：TN929.5[电子电信—通信与信息系统]