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Z. Naturforsch. 2014,
69b, 596 – 604
doi:10.5560/ZNB.2014-4014
Investigation of Imidazol(in)ium-dithiocarboxylates as Sensors for the Detection of Mercury(II) and Silver(I) Ions
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
Supporting Material: