Z. Naturforsch. 2014, 69b, 596 – 604
Investigation of Imidazol(in)ium-dithiocarboxylates as Sensors for the Detection of Mercury(II) and Silver(I) Ions
Dagny Dagmara Konieczna, Amelié Blanrue and René Wilhelm
Department of Chemistry, University of Paderborn, Warburgerstr. 100, 33098 Paderborn, Germany
Reprint requests to Prof. Dr. René Wilhelm. Fax: +49 5251 603245. E-mail: rene.wilhelm@uni-paderborn.de
Received January 31, 2014 / published online May 7, 2014
Two imidazol(in)ium-dithiocarboxylates have been investigated as sensors for the detection of mercury ions and silver ions. They could be applied as colorimetric chemosensors for the detection of Hg2+ and Ag+. Furthermore, an additional sensory input was found by a colorimetric change of a two-phase system from the organic phase into the aqueous phase. Due to different colors at different ratios of the betaines and Hg2+ it is possible to estimate the concentration of Hg2+ with the ''naked eye''.
Key words: Carbenes, Imidazolium-dithiocarboxylates, Mercury, UV/Vis, Betaines
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