Synthesis of Highly Sensitive Fluorescent Probe Based on Tetrasubstituted Imidazole and Its Application for Selective Detection of Ag+ Ion in Aqueous Media

被引：12
作者：
Mi Zhiming [1 ]
Chen Yao [1 ]
Chen Xiaodong [1 ]
Yan Liuqing [1 ]
Gu Qiang [1 ]
Zhang Hanqi [1 ]
Chen Chunhai [1 ]
Zhang Yumin [1 ]
机构：
[1] Jilin Univ, Coll Chem, Changchun 130012, Jilin, Peoples R China
来源：
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2018年 / 34卷 / 03期
关键词：
Fluorescent probe; Imidazole; Ag+ ion; Microwave irradiation; LIVING CELLS; CONJUGATED POLYMERS; SILVER(I) IONS; CHEMOSENSOR; COMPLEXES; SENSORS; CU2+;
D O I：
10.1007/s40242-018-7426-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A small molecule fluorescent probe, 4-[2-(4-chlorophenyl)-4,5-diphenyl-1H-imidazol-1-yl]aniline(L) for detecting Ag+ ion was gently synthesized via one-pot multi-component reaction catalyzed by H-3[PW12O40] under solvent-free microwave irradiation. When the concentration of Ag+ ion changed from 0 to 8.0 x10(-6) mol/L in the solution of H2O/CH3OH(19:1, volume ratio), the fluorescence emission spectrum was blue-shifted and accompanied by a gradual increase in fluorescence intensity with a low detection limit of 3.0x10(-11) mol/L. Moreover, UV-Vis absorption titration experiment demonstrated a 1:1 stoichiometric ratio and an association constant of (9.95 +/- 0.44)x10(5) L/mol between probe L and Ag+ ion, and thus their complexation mechanism was also proposed and verified. More importantly, this fluorescent probe was remarkably specific for Ag+ ion under the interference of other metal ions and exhibited a wide pH application range of 4.0-8.0. Additionally, preliminary application of this probe was also carried out and satisfactory results were shown.
引用
收藏
页码：369 / 374
页数：6
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