A dansyl-based optical probe for detection of singly and doubly charged anions
MH Al-Sayah, AM Abdalla… - Supramolecular Chemistry, 2016 - Taylor & Francis
Supramolecular Chemistry, 2016•Taylor & Francis
This paper reports the synthesis of a new molecule, 5-(dimethylamino) naphthalene-1-
sulfonic acid 2, 3-bis (3-phenylureido) phenyl ester (1), as an optical probe for anions. The
effect of the presence of various anions on the spectroscopic properties of 1 was examined
using UV–vis absorption spectroscopy, fluorescence and 1H NMR titration experiments.
Strong binding of 1 to carboxylate, oxalate, cyanide and dihydrogen phosphate anions
resulted in an increase in the emission of 1 and changes in its 1H NMR chemical shifts …
sulfonic acid 2, 3-bis (3-phenylureido) phenyl ester (1), as an optical probe for anions. The
effect of the presence of various anions on the spectroscopic properties of 1 was examined
using UV–vis absorption spectroscopy, fluorescence and 1H NMR titration experiments.
Strong binding of 1 to carboxylate, oxalate, cyanide and dihydrogen phosphate anions
resulted in an increase in the emission of 1 and changes in its 1H NMR chemical shifts …
Abstract
This paper reports the synthesis of a new molecule, 5-(dimethylamino)naphthalene-1-sulfonic acid 2,3-bis(3-phenylureido)phenyl ester (1), as an optical probe for anions. The effect of the presence of various anions on the spectroscopic properties of 1 was examined using UV–vis absorption spectroscopy, fluorescence and 1H NMR titration experiments. Strong binding of 1 to carboxylate, oxalate, cyanide and dihydrogen phosphate anions resulted in an increase in the emission of 1 and changes in its 1H NMR chemical shifts. Binding constants of 1 to anions were also calculated based on the binding isotherms derived from the spectroscopic titrations.
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