Luminescent Chemosensor Based on Ru(II) Bipyridine Complex for Detection of Sudan I through Inner Filter Effect

Presence of Sudan I in food stuff can be problematic and need to be checked in order to protect our health from possible carcinogen. Therefore, it is essential to detect Sudan I by efficient, rapid and reliable method. In this work, we have designed a Ru(II) polypyridyl complex, [Ru(bpy) 2 (CIP)] 2+...

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Bibliographic Details
Published in:Journal of fluorescence 2020-12, Vol.30 (6), p.1543-1551
Main Authors: Sheth, Sujitraj, Li, Mengyuan, Song, Qijun
Format: Article
Language:English
Subjects:
Analytical Chemistry
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedicine
Biophysics
Biotechnology
Carcinogens
Chemical sensors
Chemoreceptors
Ethanol
Luminescence
Luminescence quenching
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Summary:Presence of Sudan I in food stuff can be problematic and need to be checked in order to protect our health from possible carcinogen. Therefore, it is essential to detect Sudan I by efficient, rapid and reliable method. In this work, we have designed a Ru(II) polypyridyl complex, [Ru(bpy) 2 (CIP)] 2+ probe for the selective and sensitive detection of Sudan I. Upon addition of Sudan I to the solution of [Ru(bpy) 2 (CIP)] 2+ in ethanol, the luminescence quenched rapidly, and linear concentration range with analyte has been obtained from 0.8 to 100 μM with the limit of detection as low as 0.26 μM (S/ N  = 3). The effective luminescence quenching was resulted due to the inner filter effect (IFE) between luminophore, [Ru(bpy) 2 (CIP)] 2+ and quencher, Sudan I. Our spectroscopic study was essentially provided sufficient analytical evidences in order to prove occurrence of IFE mechanism. As there were no interferences observed in luminescence measurement from the other substances the present probe has been successfully applied for the detection of Sudan I in commercial chili powder sample, making the probe suitable for practical usage.
ISSN:1053-0509
1573-4994
DOI:10.1007/s10895-020-02602-2