W. Hong, Chu‐Chieh Lin, Tung-Sheng Hsieh
Sep 1, 2012
Citations
0
Influential Citations
15
Citations
Journal
Dyes and Pigments
Abstract
Abstract We have developed a series of fluoroionophores from diamine-salicylaldehyde (DS) derivatives and studied their spectra diversity when interacting with a variety of metal cations. Based on our results, 2-(( E )-(2-(dimethylamino)ethylimino)methyl)-4-(4-methoxystyryl)phenol ( I ) can specifically chelate Zn +2 in both organic and semi-aqueous solution. Furthermore, 2-(( E )-(2-(dimethylamino)ethylimino)methyl)-4-(( E )-2-(pyridin-4-yl)vinyl)-phenol ( II ) is an excellent metal recognizer, successfully identifying Zn +2 from acetates, chloride and perchlorate salts. In addition, control compound ( E )-N-(2-methoxy-5-(( E )-2-(pyridin-4-yl)vinyl)benzylidene)-N′,N′-dimethyl-ethane-1,2-diamine ( IV ) also showed specific metal response to Cd +2 from Cd(OAc) 2 over other anions. This anionic-dependent metal binding behavior was imparted by the pyridine moiety, which supports extra intermolecular metal-fluorophore complexation. Fluoroionophores I and II were preliminarily tested for cellular metal staining in general fluorescence and ratio fluorescence methods.