A colorimetric and fluorescent chemodosimeter responding to Cu2+ with high selectivity and sensitivity
A colorimetric and fluorescent chemodosimeter responding to Cu2+ with high selectivity and sensitivity
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DOI：
10.1007/s11164-015-2034-1
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发表时间：
2015-08-01
影响因子：
3.3
通讯作者：
Zhang, Jinlong
中科院分区：
文献类型：
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作者：
Li, Changjiang;Xiang, Kaiqiang;Zhang, Jinlong
合成了 4-(二氰亚甲基)-2-甲基-6-[对(二甲氨基)-苯乙烯基]-4H-吡喃 (DCMS) 作为 Cu2+ 比色荧光化学剂量计。 DCMS可以选择性地识别Cu2+，而不受乙腈中其他金属离子的干扰。此外，添加 Cu2+ 后，DCMS 溶液显示出肉眼可见的明显颜色变化。用于乙腈中 Cu2+ 传感的 DCMS 的检测限非常低，为 0.2 μM，相当于美国环境保护署 (USEPA) 规定的饮用水毒性水平的 1%。有趣的是，结果表明 Cu2+ 传感机制可能涉及 Cu2+ 和 DCMS 之间的氧化还原反应。
4-(dicyanomethylene)-2-methyl-6-[p-(dimethylamino)-styryl]-4H-pyran (DCMS) as a colorimetric fluorescent chemodosimeter for Cu2+ was synthesized. DCMS can selectively recognize Cu2+ without disturbance by other metal ions in acetonitrile. Furthermore, the DCMS solution showed a distinguishable color change visible to the naked eye after addition of Cu2+. DCMS for Cu2+ sensing in acetonitrile had a remarkably low detection limit of 0.2 mu M, which is 1 % of the toxicity level in drinking water defined by the US Environment Protection Agency (USEPA). Interestingly, the results suggest that the Cu2+ sensing mechanism may be involved in a redox reaction between Cu2+ and DCMS.