Özet:

In the present study, a new triphenylamine dithiosemicarbazone derivative (TFASC), which is designed as chromogenic and fluorogenic receptor, works in “on-off” system, and includes triphenylamine as signal unit and thiosemicarbazone groups as a metal ion probing unit has been synthesized. The ability of the prepared receptor to detect metal ions has been evaluated by the changes in its absorption and emission intensity. The receptor demonstrates high selectivity and sensitivity for Hg2+, which is highly harmful to the human health and the environment, among the seventeen metal ions in a mixture of acetonitrile:water (9:1). Electron transfer from Hg2+ ion to the fluorophore has been occurred upon the receptor and Hg2+ interacts under excitation, followed by decreasing the emission intensity of fluorophore significantly. The results show that the synthesized receptor can be used as chromogenic and fluorogenic sensory molecule for the determination and detection of Hg2+ ions.

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