A new phosphorescent cyclometalated Iridium(III) complex for the selective detection of Silver(I) Ion

Bihai Tong*, Jia Yan Qiang, Ya Qing Xu, Qunbo Mei, Qun Chen, Wa Hung Leung, Qian Feng Zhang

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

Abstract

A new cyclometalated iridium(III) complex, Ir(ppz)2(dtp) (Ir1) (ppzH = 4-phenylphthalazinone, dtp = diethyl dithiophosphate), has been synthesized and characterized by single-crystal X-ray diffraction. The photoluminescence spectrum of Ir1 shows an emission maximum at 597 nm and its quantum yield is ca. 0.072. Complex Ir1 exhibits a strong and fast decrease of emission upon addition of Ag+ in aqueous media. The ratio of Ir1 responding to Ag+ was determined to be 1:1 by UV-Vis absorption and phosphorescent emission measurements. Complex Ir1 is a highly selective chemosensor for Ag+ over other transition metal ions.

Original languageEnglish
Pages (from-to)1600-1609
Number of pages10
JournalJournal of Solution Chemistry
Volume41
Issue number9
DOIs
Publication statusPublished - Oct 2012

Keywords

  • Cyclometalated complex
  • Iridium
  • Photoluminescence
  • Selective chemosensor
  • Silver

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