Steady state and time resolved fluorescence studies of new indolizine derivatives with phenanthroline skeleton

Some indolizines with phenanthroline skeleton derivatives have been investigated using steady state absorption, emission and time resolved fluorescence techniques. The effects of the substituents on the electronic absorption spectra and fluorescence emission have been demonstrated. The fluorescence...

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Bibliographic Details
Published in:Journal of luminescence 2018-07, Vol.199, p.6-12
Main Authors: Airinei, Anton, Tigoianu, Radu, Danac, Ramona, Al Matarneh, Cristina M., Isac, Dragos Lucian
Format: Article
Language:English
Subjects:
Fluorescence
Indolizines
Lifetimes
Pyrrolophenanthrolines
Quantum yield
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Summary:Some indolizines with phenanthroline skeleton derivatives have been investigated using steady state absorption, emission and time resolved fluorescence techniques. The effects of the substituents on the electronic absorption spectra and fluorescence emission have been demonstrated. The fluorescence decay curves exhibit one or two decay times. The emission lifetime measurements revealed values of 3–5 ns under the excitation with 370 nm. The quantum yield was also determined. The quenching process of emission using picric acid as quencher was characterized by Stern-Volmer plots. The phenanthroline derivatives 2 and 5 possess high efficiency for the detection of picric acid.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2018.03.005