Li Rui-j
2013
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Journal
Fine Chemical Intermediates
Abstract
2-(5-((3-(1H-Benzo [d]imidazol-2-yl)-4-hydroxyphenyl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid was synthesized from o-phenylenediamine and salicyladehyde. The structure was characterized by IR,1H NMR, MS, UV and FL spectra. It was found that Co2+has better fluorescent quenching effect on 2-(5-((3-(1H-benzo[d]imidazol-2-yl)-4-hydroxyphenyl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid than the other 14 metal ions which were tested in methanol. This special property indicates that this new fluorescent compound has good selectivity to Co2 +, so it could be further studied as Co2 +fluorescent chemical sensor of fluorescent quenching.