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Highly sensitive and selective chemosensor for Hg2+ based on the rhodamine fluorophore
- Issue Date
- 21-Jun-2007
- Publisher
- AMER CHEMICAL SOC
- Citation
- ORGANIC LETTERS, v.9, no.13, pp 2501 - 2504
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- ORGANIC LETTERS
- Volume
- 9
- Number
- 13
- Start Page
- 2501
- End Page
- 2504
- ISSN
- 1523-7060
1523-7052
- Abstract
- A novel tren-based tripodal chemosensor 1 bearing a rhodamine and two tosyl groups was synthesized and its sensing behavior toward metal ions was investigated by UV/vis and fluorescence spectroscopies. Addition of a Hg2+ ion to a CH3CN solution of 1 gave a visual color change as well as significantly enhanced fluorescence, while other ions including Pb2+, Zn2+, Cu2+, Ca2+, Ba2+, Cd2+, Co2+, Mg2+, Ag+, Cs+, Li+, and Na+ induced no or much smaller color/spectral changes, which constituted a Hg2+-selective fluorescent chemosensor (OFF-ON).
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