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武汉大学学报 英文版 | Wuhan University Journal of Natural Sciences
Wan Fang
Wuhan University
Latest Article
Pyrazole-Triazine Conjugate as Highly Selective and Sensitive Fluorescence Probe for Silver (I) Detection and Its Imaging in Living Cells
LIU Yanhong, YU Bingqiong, ZHU Qingya, YAN Kun†
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, China
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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