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

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74 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

Bibliographical note

Funding Information:
This work was supported by the CRI project (2010-0000728) (J.S. Kim), NRF grant ( R0A-2010-0018921 ), and Priority Research Centers Program through the NRF funded by the Ministry of Education, Science and Technology (No. 2010-0020209 ) (B.R. Cho). J.F. Zhang acknowledges the “ChunHui Project” Foundation of ministry of education of China , the Foundation of Department of Education of Yunnan Province of China ( 08Y0137 ) and the Foundation of Department of Science and Technology of Yunnan Province of China ( 2008CD104 ). CSL was supported by a BK21 scholarship.

Keywords

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

ASJC Scopus subject areas

  • Analytical Chemistry

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