A New Fluoride Selective Fluorescent as Well as Chromogenic Chemosensor Containing a Naphthalene Urea Derivative
作者:Eun Jin Cho、Jung Wha Moon、Seung Whan Ko、Jin Yong Lee、Sook Kyung Kim、Juyoung Yoon、Kye Chun Nam
DOI:10.1021/ja036248g
日期:2003.10.1
A new naphthalene derivative containing a urea group at the 1,8-position of naphthalene was synthesized and showed a unique absorption and fluorescence peak with a fluoride ion. Calculations suggested that a new peak was attributed to the increased anion character of urea nitrogen due to the strong interaction of the fluoride and N-H protons.
Efficient Fluoride-Selective Fluorescent Host: Experiment and Theory
作者:Jin Yong Lee、Eun Jin Cho、Shaul Mukamel、Kye Chun Nam
DOI:10.1021/jo0356457
日期:2004.2.1
showed a unique absorption and fluorescence peak with fluorideion. Calculations suggested that a new peak was attributed to the increased anionic character of urea nitrogen due to the strongly charged hydrogen bonding between fluoride and amide protons of the urea. The fluoride selectivity among halides (F-, Cl-, Br-) comes from the fact that the fluoride approaches much closer to the amide protons than