基于ESIPT原理的Cu^2+荧光探针  

ESIPT-based fluorescence probe for selective detection of Cu^2+

作　　者：彭化南 彭小明 杨娜 刘华华 徐和涛 曾家俊 PENG Huanan;PENG Xiaoming;YANG Na;LIU Huahua;XU Hetao;ZENG Jiajun(College of Chemistry and Environment Sciences,Shangrao Normal University,Shangrao 334001;Shangrao Ecological Environment Bureau,Shangrao 334001)

机构地区：[1]上饶师范学院化学与环境科学学院,上饶334001 [2]上饶市生态环境局,上饶334001

出　　处：《分析试验室》2020年第2期185-189,共5页Chinese Journal of Analysis Laboratory

基　　金：江西教育厅科学技术研究项目(GJJ170928);国家自然科学基金(61741510);上饶师范学院教改课题(JG-17-08)资助。

摘　　要：合成了一种基于激发态分子内质子转移(ESIPT)的Cu^2+荧光探针L。通过Job’s曲线、MS和1H NM R研究了探针L对Cu^2+的识别机理。与其他金属离子共存时,探针L对Cu^2+表现出良好的选择性和灵敏度。加入Cu^2+后,探针L的荧光强度逐渐降低;在365 nm紫外光的照射下,探针L溶液的颜色由蓝色变成无色。探针L具有较低的检出限(0.47μmol/L)和短的响应时间(5s)。An excited-state intramolecular proton transfer(ESIPT)based fluorescence probe L for Cu^2+detection was synthesized.The sensing mechanism between probe L and Cu^2+was also investigated by Job plot’s analysis,MS and1 H NMR spectra.Probe L showed good selectivity and sensitivity to Cu^2+.The fluorescence intensity of probe L decreased gradually with the addition of Cu^2+,and the color of the solution L changed from blue to colorless by naked eyes under 365 nm ultraviolet light irradiation.Probe L exhibited a low detection limit(0.47μmol/L)and a rapid response time(5 s).

关 键 词：CU^2+ 荧光探针 激发态分子内质子转移 菲并咪唑 

分 类 号：O626.23[理学—有机化学]