Article ID Journal Published Year Pages File Type
1308181 Inorganica Chimica Acta 2010 5 Pages PDF
Abstract

The synthesis and crystal structure of an anionic phosphorescent iridium complex TBA[Ir(dfppy)2(NCS)2] (1) were reported. 1 can selectively detect Hg2+ with the help of UV–Vis absorption and emission spectra titration. In the presence of Hg2+, the obvious decrease of the luminescence intensity at 475 nm was investigated, which could be observed by the naked eyes. The phosphorescence quantum efficiency in CH3CN solution changed from 0.07 to 0.00085. No obvious spectra changes were observed upon addition of a large excess of other transition metals. Due to its strong thiophilic affinity, the special chemical reaction induced by Hg2+ is responsible for the significant change of absorption and luminescence spectra, which is confirmed by ESI-MS.

Graphical abstractAn anionic phosphorescent iridium complex has been demonstrated to act as a phosphorescent turn-off type chemodosimeter via a special chemical reaction induced by Hg2+.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
Authors
, , , , , , ,