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Pyrene Excimer-Based Calix[4]arene FRET Chemosensor for Mercury(II)
- Issue Date
- 5-Nov-2010
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF ORGANIC CHEMISTRY, v.75, no.21, pp.7159 - 7165
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ORGANIC CHEMISTRY
- Volume
- 75
- Number
- 21
- Start Page
- 7159
- End Page
- 7165
- ISSN
- 0022-3263
- Abstract
- A novel calix[4]arene derivative locked in the 1,3-alternate conformation (2) bearing two pyrene and rhodamine fluorophores was synthesized as a selective sensor for the Hg2+ ion. The sensoring is based on FRET from pyretic; excimer emissions to ring-opened rhodamine absorption upon complexation of the Hg2+ ion. Addition of Hg2+ to a mixed solution of 2 gave significantly enhanced fluorescence at similar to 576 nm via FRET with excitation at 343 nm. We also found that the pyrene excimer emissions formed by the intramolecular pi-pi interactions are more effective in obtaining strong FRET bands than those by intermolecular pi-pi interactions.
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Related Researcher
- Kim, Jong Seung
- College of Science (Department of Chemistry)