Fluoride indicator that functions in mixed aqueous media: hydrogen bonding effects
Fluoride indicator that functions in mixed aqueous media: hydrogen bonding effects
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DOI：
10.1016/j.tetlet.2011.11.099
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发表时间：
2012-02-01
影响因子：
1.8
通讯作者：
Cho, Dong-Gyu
中科院分区：
文献类型：
--
作者：
Atta, Ananta Kumar;Ahn, In-Ho;Cho, Dong-Gyu
报道了一种在混合水介质中起作用的脲基氟离子指示剂3。在这些条件下，指示剂3和两个控制系统1和2是无色的。氟阴离子的加入在3的情况下产生易于可视化的比色响应（无色至黄色），但由于阴离子诱导的Si-O键断裂，I或2则不然。大多数的比色反应被认为是源于氢键网络的改变，而不是其共轭途径本身的变化。(C)2011爱思唯尔有限公司保留所有权利。
A urea-based fluoride anion indicator, 3, that functions in mixed aqueous media is reported. Under these conditions, indicator 3 and the two control systems 1 and 2 are colorless. Addition of fluoride anions produces an easy-to-visualize colorirnetric response (colorless to yellow) in the case of 3, but not I or 2 as the result of anion-induced Si-O bond cleavage. Most of the colorimetric response is believed to stem from an alteration in the hydrogen bonding network, rather than changes to the it-conjugation pathway per se. (C) 2011 Elsevier Ltd. All rights reserved.