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An effective colorimetric and fluorescent chemosensor derived from modified curcumin for the detection of the Fe3+ ion

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Title An effective colorimetric and fluorescent chemosensor derived from modified curcumin for the detection of the Fe3+ ion
 
Creator Rajam, Pappian
Mahalakshmy, Rajaram
 
Subject Fluorescence
1-Aminonaphthalene
Schiff base
Curcumin
Colorimetric
 
Description 518-526
From curcumin and 1-aminonaphthalene, the chemosensor NIBMP (4,4'-(3,5-bis(naphthalene-1-ylimino)hepta-1,6-
diene-1,7-diyl)bis(2-methoxyphenol)) has been prepared. For Fe3+ as opposed to other metal ions, NIBMP serves as both a
colorimetric and a fluorescence turn-off sensor. Interactions between NIBMP and Fe3+ reveal a noticeable colour shift from
yellow to brown. The absorption and fluorescence studies reveal new peaks at 326 nm and quenching at 530 nm,
respectively. The limit of detection, 0.139 μM, is found to be significantly lower than the EPA's standard for drinking water
(5.37 μM). There is evidence for a 1:1 stoichiometry between NIBMP and Fe3+ utilizing Job's plot analysis and ESI-HRMS.
Additionally, a Stern-Volmer plot has been created, and its quenching constant has been computed. Moreover, EDTA's
fluorescence analysis has been used to test whether the complexation of NIBMP with Fe3+ is reversible. Significantly, Fe3+
is successfully detected using NIBMP in actual water samples with excellent recoveries.
 
Date 2023-05-18T05:12:25Z
2023-05-18T05:12:25Z
2023-05
 
Type Article
 
Identifier 2583-1321 (Online); 0019-5103 (Print)
http://nopr.niscpr.res.in/handle/123456789/61922
https://doi.org/10.56042/ijc.v62i5.1451
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJC Vol.62(05) [May 2023]