Publication: A rhodamine–bistriazole based fluorescent and colorimetric sensor containing a phenyl linker for Fe(III) detection
Issued Date
2020-01-01
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ISSN
13369075
03666352
03666352
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2-s2.0-85091017816
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Mahidol University
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SCOPUS
Bibliographic Citation
Chemical Papers. (2020)
Suggested Citation
Kanokorn Wechakorn, Sinchai Chomngam, Utt Eiamprasert, Palangpon Kongsaeree A rhodamine–bistriazole based fluorescent and colorimetric sensor containing a phenyl linker for Fe(III) detection. Chemical Papers. (2020). doi:10.1007/s11696-020-01349-1 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/58995
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Title
A rhodamine–bistriazole based fluorescent and colorimetric sensor containing a phenyl linker for Fe(III) detection
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Abstract
© 2020, Institute of Chemistry, Slovak Academy of Sciences. A rhodamine-based fluorescent sensor bearing 1,2-phenylenediamine linked to a bistriazole moiety was designed and synthesized through the copper(I)-catalyzed click chemistry. The bistriazole-based sensor containing an aromatic linker was highly selective toward Fe3+, among other metal ions in MeCN/H2O (1:9 v/v, pH 7.0). Upon the addition of Fe3+, the solution of the sensor changed from colorless to pink and fluorescence emission increased 614-fold, visually observed within 5 min. For the titration experiments, the absorption and fluorescence intensity were distinctly enhanced with the increasing concentrations of Fe3+ and the limit of detection (LOD) was calculated to be 0.15 μM. The binding ratio of the sensor–Fe3+ complex was a 1:1 ratio, confirmed by the Job’s plot. Besides, the optimized condition of the sensor for Fe3+ recognition was investigated in a pH range of 5.0–7.0.