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A two-photon excited luminescence of water-soluble rhodamine-platinum(II) complex: Fluorescent probe specific for Hg2+ detection in live cell
- Issue Date
- 15-12월-2010
- Publisher
- ELSEVIER
- Keywords
- Rhodamine; Platinum(II) complex; Hg2+ sensor; Two-photon miscroscopy
- Citation
- TALANTA, v.83, no.2, pp.658 - 662
- Indexed
- SCIE
SCOPUS
- Journal Title
- TALANTA
- Volume
- 83
- Number
- 2
- Start Page
- 658
- End Page
- 662
- ISSN
- 0039-9140
- 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 Hg2+ 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. (C) 2010 Elsevier B.V. All rights reserved.
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