A two-photon excited luminescence of water-soluble rhodamine-platinum(II) complex: Fluorescent probe specific for Hg2+ detection in live cell

Jun Feng Zhang, Chang Su Lim, Bong-Rae Cho, Jong Seung Kim

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

The first example of cyclometalated platinum(II)-containing rhodamine probe (1) with two-photon induced luminescent properties was synthesized and investigated for mercury detection. A highly selective color change of 1, from light yellow to pink, is observed only in the presence of Hg2+ due to the formation of 1,3,4-oxadiazole ring in 2. This selectivity of Hg 2+ with color changes can be observed easily by the naked-eye. Meanwhile, a remarkable turn-on and selective 20-fold fluorescent enhancement of 1 upon binding with Hg2+ over the other tested metal ions was observed. The water-soluble probe 1 was successfully applied in the visualizing of the site of Hg2+ accumulation as well as estimating of trace amounts of mercury ions in live HeLa cells by two-photon microscopy.

Original languageEnglish
Pages (from-to)658-662
Number of pages5
JournalTalanta
Volume83
Issue number2
DOIs
Publication statusPublished - 2010 Dec 15

Keywords

  • Platinum(II) complex
  • Rhodamine
  • Two-photon miscroscopy

ASJC Scopus subject areas

  • Analytical Chemistry

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