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Information Journal Paper

Title

Development of a Polyfunctional Dipodal Schiff Base: An Efficient Chelator and a Potential Zinc Sensor

Pages

  141-156

Abstract

 A novel polyfunctional dipodal ligand, L = N, N'-bis[2-[(2-hydroxy-1-naphthyl)methyleneamino]ethyl]propanediamide (DOTA2HNAP) was developed and characterized through elemental and spectral analyses. The complexation behavior of the ligand was investigated with Co2+, Cu2+ and Zn2+ metal ions by potentiometric and spectrophotometric methods in H2O-DMSO mixture (99: 1) at μ = 0. 1M KCl and 25 ± 1 ° C. Four protonation constants for – OH of naphtholate groups and – N of imine were determined for the ligand. The ligand forms monomeric complexes of ML type with the metal ions, where coordination occurs through N-imine and O-naphtholate donors (N2O2). In the case of a complex of copper, an additional species, MLH-2, was formed due to ionization of the amide groups in a higher pH. The minimum energy structures of the metal complexes in solution have been obtained through molecular modeling studies by using the semi-empirical/ PM3 method. The photophysical properties of DOTA2HNAP were investigated in the presence of a wide range of biologically relevant metal ions. The fluorescence emission of the ligand at 450 nm ( ex = 361 nm) exhibited a remarkable enhancement with Zn2+ ions (1 equivalent) at physiological pH amongst all metal ions. Such behavior enables the ligand to be considered as a suitable model for the detection of Zn2+ towards environmental applications.

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    APA: Copy

    GUPTA, AMIT, Dangi, Vijay, Baral, Minati, & Kanungo, B.K.. (2019). Development of a Polyfunctional Dipodal Schiff Base: An Efficient Chelator and a Potential Zinc Sensor. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), 38(6), 141-156. SID. https://sid.ir/paper/761887/en

    Vancouver: Copy

    GUPTA AMIT, Dangi Vijay, Baral Minati, Kanungo B.K.. Development of a Polyfunctional Dipodal Schiff Base: An Efficient Chelator and a Potential Zinc Sensor. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)[Internet]. 2019;38(6):141-156. Available from: https://sid.ir/paper/761887/en

    IEEE: Copy

    AMIT GUPTA, Vijay Dangi, Minati Baral, and B.K. Kanungo, “Development of a Polyfunctional Dipodal Schiff Base: An Efficient Chelator and a Potential Zinc Sensor,” IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), vol. 38, no. 6, pp. 141–156, 2019, [Online]. Available: https://sid.ir/paper/761887/en

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