Highly selective fluoride ion detection based on a fluorescent alizarin–o-aminomethylphenylboronic acid ensemble in aqueous MeOH solution
Highly selective fluoride ion detection based on a fluorescent alizarin–o-aminomethylphenylboronic acid ensemble in aqueous MeOH solution
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DOI：
10.1246/cl.2006.996
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发表时间：
2006-07
影响因子：
1.6
通讯作者：
Y. Kubo;T. Ishida;T. Minami;T. James
中科院分区：
文献类型：
--
作者：
Y. Kubo;T. Ishida;T. Minami;T. James
本文报道了一种由茜素和邻氨基甲基苯硼酸1组成的自组织荧光传感器，该传感器在pH 5.5的水-甲醇（1：4 w/w）体系中对氟离子具有高度选择性的响应。化合物1（pK（a）= 5.63）在pH5.5的溶液中遵循平衡：茜素-1 + H+可逆箭头1H（+）+茜素。因此，加入溶液中的F-优选与1H（+）结合，以允许系综释放茜素，导致荧光猝灭。
A self-organized fluorescent sensor consisting of alizarin and o-aminomethylphenylboronic acid 1 is presented, the ensemble shows highly selective fluoride ion-response in H2O-MeOH (1:4 w/w) at pH 5.5. Compound 1 (pK(a) = 5.63) at pH5.5 in the solution follows the equilibrium: alizarin-1 + H+ reversible arrow 1H(+) + alizarin. Thus, F- added into the solution preferably binds to 1H(+) to allow the ensemble to release alizarin, resulting in a fluorescence quenching.