A new fluorescent enhancement chemosensor for Al^sup 3+^ and Fe^sup 3+^ based on naphthyridine and benzothiazole groups

A novel and easily synthesized compound, N-(2-(2-benzothiazol-2-yl)vinyl-4-methyl-1,8- naphthyrine-7-yl)acetamide (1) based on naphthyridine and benzothiazole group, has been developed as a turn-on fluorescent chemosensor for Al3+ and Fe3+ simultaneously. The absorbance and fluorescent intensities o...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. 256; p. 276
Main Authors Yao, Denghui, Huang, Xuewei, Guo, Fengqi, Xie, Puhui
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier Science Ltd 01.03.2018
Subjects
Aluminum
Chemical sensors
Chemoreceptors
Chemosensory perception
Density functional theory
Detection
Electron transfer
Ferric ions
Fluorescence
Iron
Mass spectra
Mass spectroscopy
NMR
Nuclear magnetic resonance
Pollution
Synthesis
Ultraviolet radiation
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Summary:A novel and easily synthesized compound, N-(2-(2-benzothiazol-2-yl)vinyl-4-methyl-1,8- naphthyrine-7-yl)acetamide (1) based on naphthyridine and benzothiazole group, has been developed as a turn-on fluorescent chemosensor for Al3+ and Fe3+ simultaneously. The absorbance and fluorescent intensities of 1 increased linearly in aqueous solution upon the interaction of 1 with Al3+ or Fe3+. The other co-existing metal ions have no obvious effect on the detection. The Job’s plot and the ESI mass spectra indicated the formation of 1:1 complex between 1 and Al3+or Fe3+. The sensing mechanism was proposed according to the Job’s plot, ESI mass spectra, 1H NMR spectra，and density functional theory (DFT) calculation. The properties of the model compound N-(2-((2-methylbenzothiazol-6-ylimino)methyl)-4-methyl-1,8-naphthyridin-7-yl)acetamide (2), which was designed and synthesized in order to prove the sensing mechanism, also verified the proposed sensing mechanism.
ISSN:0925-4005
1873-3077