Dimethylaminodiethylenetriamine Derivatives of Fluorescence Chemosenso for Detection of Zn2+ In Aqueous Solution

11th Joint Conference on Chemistry in Conjunction with the 4th Regional Biomaterials Scientific Meeting

材料科学;化学;生物科学

Adnan, S.N.A.M.^1 ; Hasan, S.^1 ; Zakaria, S.^1 ; Yusof, Y.M.^1

Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor

40450, Malaysia^1

关键词: Diethylenetriamine;    Fluorescence sensing;    Fluorescent chemosensor;    Fluorescent chemosensors;    High sensitivity;    Practical systems;    Real water samples;    Theoretical values;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/172/1/012051/pdf
DOI  :  10.1088/1757-899X/172/1/012051

来源: IOP

【 摘 要 】

Fluorescent chemosensors for the detection and measurement of metal ions, especially for cations environmental interest such as Fe3+, Co2+, Mn2+, Cu2+, and Zn2+are actively investigated because it shows simplicity, high sensitivity and fast response. New benzenyl derivative bearing pyridine group has been synthesized and studied as fluorescent chemosensor for Zn2+ion. Chemosensor N-{2-[(4-Dimethylamino-benzylidene)-amino]-ethyl}-N'-pyridin-2-ylmethylene-ethane-1,2-diamine was synthesized by condensation of p-dimethylaminobenzaldehyde, diethylenetriamine and o-pyridinecarbaldehyde and characterized by FT-IR,1H-NMR and elemental analysis (CHN). FT-IR showed the appearance of peak azomethine (C=NH) at 1639.46 cm-1, pyridine (C-N) at 1591 cm-1and disappearance of NH2peak at 3278.78 cm-1after the condensation reaction in between aldehyde and amine.1H-NMR signal at 8.19 ppm, 3.12 ppm and 8.08 ppm was assigned to C=NH, N(CH3)2and C-N respectively, confirmed the formation of N-{2-[(4-Dimethylamino-benzylidene)-amino]-ethyl}-N'-pyridin-2-ylmethylene-ethane-1,2-diamine. The elemental analysis was found closed to the theoretical value and the percent composition of A is 91.82%. Sensor A exhibits high selectivity and sensitivity towards Zn2+. Other metal ions such Cu2+, Fe3+, Co2+and Ni2+had no such significant effect on the fluorescence. The detection limit of N-{2-[(4-Dimethylamino-benzylidene)-amino]-ethyl}-N'-pyridin-2-ylmethylene-ethane-1,2-diamine for Zn2+was 3.5 x 10-5M. M. This sensor exhibits a very good fluorescence sensing ability to Zn2+over a wide range of pH. Therefore it is capable of being a practical system for the monitoring of Zn2+concentrations in real water sample.