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武汉大学学报 英文版 | Wuhan University Journal of Natural Sciences
Wan Fang
CNKI
CSCD
Wuhan University
Latest Article
Pyrazole-Triazine Conjugate as Highly Selective and Sensitive Fluorescence Probe for Silver (I) Detection and Its Imaging in Living Cells
Time:2019-9-17  
LIU Yanhong, YU Bingqiong, ZHU Qingya, YAN Kun†
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, China
Abstract:
A new fluorescence probe 2,2’-(6-(4-(diethylamino)phenyl)-1,3,5-triazine-2,4-diyl)bis(1H-pyrazole-1,3-diyl)diacetate (EATPA) based on 1, 3, 5-triazine was designed and synthesized. It exhibited distinct fluo-rescence quenching in the presence of silver ions that can be used for highly sensitive and selective detection of Ag+. Fluorescence titration and Job’s plot analysis revealed the formation of [Ag(EATPA)2]+ entity with high binding constant (1.43×104 L/mol) and low detection limit (0.882 µmol/L). Fur-thermore, live-cell imaging experiments demonstrated that EATPA is potentially applicable for the tracking of Ag+ in living cells.
Key words:fluorescence probe; silver ions; fluorescence quenching; detection limit; cell imaging
CLC number:O 61
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