用于铜离子和草甘膦检测的萘酰亚胺类席夫碱荧光探针的合成及应用  

Synthesis and Application of Naphthalimide Schiff Base Fluorescent Probe for Detection of Copper Ion and Glyphosate

作　　者：刘洋[1] 吴绵园 由君[1] 武文菊 喻艳超 LIU Yang;WU Mian-Yuan;YOU Jun;WU Wen-Ju;YU Yan-Chao(Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province,College of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学材料科学与化学工程学院,绿色化工技术黑龙江省高校重点实验室,哈尔滨150080

出　　处：《分析化学》2022年第5期772-780,共9页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金项目(No.21908034);黑龙江省自然科学基金项目(No.LH2021H001)资助。

摘　　要：以4-溴-1,8-萘二甲酸酐为原料,合成了一种萘酰亚胺类席夫碱荧光探针L,采用核磁共振(^(1)H NMR,^(13)C NMR)、红外光谱(IR)和高分辨质谱(HRMS)进行了结构表征。探针L在CH_(3)CN-H_(2)O(75∶25,V/V,20 mmol/L HEPES,pH=7.4)溶液中,可实现对Cu^(2+)的专一性识别,检出限低至0.37μmol/L。探针L与Cu^(2+)形成1∶1配合物L-Cu^(2+),此配合物通过配体置换作用可实现对草甘膦的特异性检测,方法具有选择性好、抗干扰能力强、检出限低(0.56μmol/L,0.09μg/mL)、可实现可视化检测等优点。配合物L-Cu^(2+)体系被成功应用于实际水样中草甘膦的检测,为环境样品中草甘膦的检测提供了新方法。A naphthalimide Schiff base fluorescent probe L was designed and synthesized with 4-bromo-1,8-naphthalene dicarboxylic anhydride as raw material.Its structure was characterized by 1 H nuclear magnetic resonance(NMR),^(13)C NMR,infrared(IR)spectroscopy and high resolution mass spectrometry(HRMS).In the CH_(3)CN-H_(2)O(75∶25,V/V,20 mmol/L HEPES,pH=7.4)solution,the probe possessed good selectivity and sensitivity to Cu^(2+) and with a detection limit as low as 0.37μmol/L.The stoichiometric ratio of L to Cu ^(2+) was 1∶1,and the complex L-Cu^(2+)had high selectivity,good sensitivity,low detection limit of 0.56μmol/L(0.09μg/mL)and naked eye recognition for detection of glyphosate by ligand replacement menthod.In addition,the L-Cu^(2+) was succesfully used in detection of glyphosate in actual water samples,which indicated that the proposed probe had potential application in the field of environmental detection.

关 键 词：荧光探针 席夫碱 萘酰亚胺 铜离子 草甘膦 

分 类 号：O657.3[理学—分析化学] R914[理学—化学]