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2-(1-Pyrenyl) benzimidazole as a ratiometric and 'turn-on' fluorescent probe for iron(III) ions in aqueous solution
- Source :
- The Analyst. 141(7)
- Publication Year :
- 2016
-
Abstract
- A highly selective and sensitive ratiometric and "turn-on" fluorescent probe for Fe(3+), 2-(1-pyrenyl) benzimidazole (L), was synthesized by a one-step process. In emission spectra, the relative intensity ratio of excimer to monomer fluorescence (IE450/IM387) of L increased 510-fold upon the addition of 30 equiv. of Fe(3+) with a detection limit of 0.2 μM (11.2 ppb) in aqueous solution. Meanwhile, the fluorescence excitation spectra of L showed a fluorescent "turn-on" probe for Fe(3+) with 30-fold enhancement in excitation band intensity of excimer.
- Subjects :
- Detection limit
Benzimidazole
Aqueous solution
010405 organic chemistry
Chemistry
010402 general chemistry
Photochemistry
Excimer
01 natural sciences
Biochemistry
Fluorescence
0104 chemical sciences
Analytical Chemistry
Ion
chemistry.chemical_compound
Monomer
Electrochemistry
Environmental Chemistry
Emission spectrum
Spectroscopy
Subjects
Details
- ISSN :
- 13645528
- Volume :
- 141
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- The Analyst
- Accession number :
- edsair.doi.dedup.....75491a6f8a2069598d367fa3bbe72b98