A novel colorimetric and off-on fluorescent sensor for Hg2+ and its application in live cell imaging
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- 作者：Man Li ; Yuhua Jiang ; Di Zhang ; Peigang Ding ; Zhenji Wang ; Yong Ye ; Yufen Zhao
- 关键词：Rhodamine B ; &ldquo ; S&rdquo ; group ; Hg2+ ; Off&ndash ; on ; Cell imaging
- 刊名：Journal of Luminescence
- 出版年：April, 2014
- 年：2014
- 卷：148
- 期：Complete
- 页码：219-224
- 全文大小：1534 K
文摘
A novel rhodamine-based fluorescent probe L2 with two 鈥?em>S鈥?groups was synthesized and characterized. As expected, L2 exhibited high selectivity and sensitivity for Hg2+ over other commonly coexistent metal ions. Its selectivity is excellent, and the detection limit was measured to be 1 ppm. The significant changes in the fluorescence color could be used for naked-eye detection. Furthermore, fluorescence imaging experiments of Hg2+ ions in living EC-109 cells demonstrated its value of practical applications in biological systems.