Kim Yong Sung, Lee Jae Jun, Lee Sun Young, Kim Pan-Gi, Kim Cheal
Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, Republic of Korea.
School of Ecology & Environmental Systems, Kyungpook National University, Sangju, 37224, South Korea.
J Fluoresc. 2016 May;26(3):835-44. doi: 10.1007/s10895-016-1771-x. Epub 2016 Jan 21.
A simple "off-on fluorescence type" chemosensor 1 3-((2-(dimethylamino)ethyl)amino)-N-(quinolin-8-yl)propanamide has been synthesized for Zn(2+). The receptor 1 comprises the quinoline moiety as fluorophore and the N,N(')-dimethylethane-1,2-diamine as a binding site. 1 showed a remarkable fluorescence enhancement in the presence of Zn(2+) in aqueous solution. Importantly, the chemosensor 1 could be used to detect and quantify Zn(2+) in water samples. In particular, this chemosensor could clearly distinguish Zn(2+) from Cd(2+). The binding properties of 1 with Zn(2+) ions were investigated by UV-vis, fluorescence, electrospray ionization mass spectroscopy and (1)H NMR titration.
已合成一种用于锌离子（Zn(2+)）的简单“开启-关闭荧光型”化学传感器1，即3-((2-(二甲氨基)乙基)氨基)-N-(喹啉-8-基)丙酰胺。受体1包含作为荧光团的喹啉部分和作为结合位点的N,N'-二甲基乙烷-1,2-二胺。在水溶液中，1在锌离子（Zn(2+)）存在下表现出显著的荧光增强。重要的是，化学传感器1可用于检测和定量水样中的锌离子（Zn(2+)）。特别是，这种化学传感器能够清晰地区分锌离子（Zn(2+)）和镉离子（Cd(2+)）。通过紫外可见光谱、荧光光谱、电喷雾电离质谱和(1)H NMR滴定研究了1与锌离子（Zn(2+)）的结合特性。
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