General Information
    • ISSN: 2010-0221
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Dr. Eldin W. C. Lim
    • Executive Editor: Mr. Ron C. Wu
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Dr. Eldin W. C. Lim
Dept. of Chemical and Biomolecular Engineering,
National University of Singapore, Singapore
IJCEA 2017 Vol.8(1): 28-32 ISSN: 2010-0221
doi: 10.18178/ijcea.2017.8.1.626

Fluorescent Chemosensor Bearing Amine and Benzenyl Functionality for Fe3+ Ions Detection in Aqueous Solution

Sharizal Hasan, Salamiah Zakaria, and Siti Nur Ain Mohd Adnan
Abstract—Recently designing of fluorescent chemosensor for heavy metal ions detection with high specificity and sensitivity have been explored. In this works, two steps synthesis of A was prepared using Schiff base technique. Monocondensed ligand was prepared by reacting diethylenetriamine with 4-dimethylaminobenzaldehyde, followed by attaching 3-pyridinecarbaldehyde on the other side of diethylenetriamine. Sensor A was fully characterized by FT-IR, 1H-NMR and elemental analysis (CHN). The signal at 1639.46 cm-1 in FT-IR spectrum was assigned to C=N, formed after condensation reaction in between aldehyde and amine. NH2 peak at 3278.78 cm-1 still appeared proved the monocondensed ligand. 1H-NMR values at 8.19 ppm and 2.72 ppm were assigned to HC=N and -NH2 respectively. Dicondensed ligand was formed after addition of 3-pyridinecarboxaldehyde. NH2 signal in both FT-IR and 1H-NMR spectrum was absent indicating both amines in triamine undergone condensation to form dicondensed. 1H-NMR spectrum at 8.19 ppm was assigned to (HC=N) appeared due to the formation of imine proton. The fluorescent spectral measurements revealed that A was selective towards Fe3+ ions but not for other metal ions such as Co2+, Ni2+, Cu2+ and Zn2+. The detection limit of A was 6.49 × 10-5 M and expected to be useful as chemical sensor.

Index Terms—Diethylenetriamine, Fe3+ ion, Fluorescence Chemosensor, Schiff base.

The authors are with the Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia (e-mail:,,


Cite: Sharizal Hasan, Salamiah Zakaria, and Siti Nur Ain Mohd Adnan, "Fluorescent Chemosensor Bearing Amine and Benzenyl Functionality for Fe3+ Ions Detection in Aqueous Solution," International Journal of Chemical Engineering and Applications vol. 8, no. 1, pp. 28-32, 2017.

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