Imidazo-benzo-15-crown-5 ethers bearing arylthienyl and bithienyl moieties as novel fluorescent chemosensors for Pd2+ and Cu2+
Imidazo-benzo-15-crown-5 ethers bearing arylthienyl and bithienyl moieties as novel fluorescent chemosensors for Pd2+ and Cu2+
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DOI：
10.1016/j.tet.2011.06.106
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发表时间：
2011-09-16
期刊：
影响因子：
2.1
通讯作者：
Raposo, M. Manuela M.
中科院分区：
文献类型：
--
作者：
Batista, Rosa M. F.;Oliveira, Elisabete;Raposo, M. Manuela M.
报道了以一个或两个熔融苯并-15-冠-5醚为受体单元的咪唑芳基噻吩基或咪唑-二噻吩基偶共轭桥的新型荧光离子载体。利用吸收光谱和发射光谱研究了化合物在MeCN/DMSO溶液中对金属阳离子（Li+、Na+、K+、Ca2+、Zn2+、Cu2+、Ni2+、Pd2+、Hg2+）和氟离子的传感能力。实验结果表明，所有化合物都可以作为Cu2+和Pd2+的选择性荧光传感器，也可以作为氟离子的选择性荧光传感器，在双取代冠醚衍生物的情况下。(C) 2011 Elsevier Ltd.版权所有。
Novel fluorescent ionophores bearing imidazo-arylthienyl or imidazo-bithienyl pi-conjugated bridges functionalized with one or two fused benzo-15-crown-5 ethers as receptor units are reported. The sensing ability of the compounds in the presence of metallic cations (Li+, Na+, K+, Ca2+, Zn2+, Cu2+, Ni2+, Pd2+, and Hg2+) and fluoride ion was studied in MeCN/DMSO solutions by absorption and emission spectroscopy. The experimental results indicate that all compounds could act as selective fluorimetric sensors for Cu2+ and Pd2+ and also for the fluoride ion, in the case of the bis-substituted crown ether derivatives. (C) 2011 Elsevier Ltd. All rights reserved.