共 34 条
Synthesis of Highly Sensitive Fluorescent Probe Based on Tetrasubstituted Imidazole and Its Application for Selective Detection of Ag+ Ion in Aqueous Media
被引:11
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
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
相关论文