Iminobenzophenone-thiophen hydrazide schiff base: a selective turn on sensor for paramagnetic Fe3+ ion and application in real sample analysis.

Autor:	Christopher Leslee, Denzil Britto, Madheswaran, Bharathi, Gunasekaran, Jayapratha, Karuppannan, Sekar, Kuppannan, Shanmuga Bharathi
Předmět:	SCHIFF bases ETHYLENEDIAMINETETRAACETIC acid CHARGE transfer METAL ions LIGAND binding (Biochemistry) IONS OCHRATOXINS
Zdroj:	Photochemical & Photobiological Sciences; Aug2023, Vol. 22 Issue 8, p1933-1943, 11p
Abstrakt:	A highly selective turn-on sensor for paramagnetic Fe3+ ions based on (E)-N'-((2-aminophenyl)(phenyl)methylene)thiophene-2-carbohydrazide is successfully synthesized. The sensor BPTH is significantly selective and sensitive towards Fe3+ ions over other interfering metal ions especially Cu2+ and Co2+ ions with a lowest limit of recognition 1.48 × 10–7 M. The turn-on sensing mechanism involves enhanced charge transfer. Fe3+ ion forms strong binding with the ligand with a Ka value about 8.23 × 104 M−1 and a 1:1 stoichiometric ratio is confirmed by Job's plot experiment. With Fe3+ ion, the yellow ligand BPTH change to a green fluorescent and reversible with 1 equivalent of EDTA. Practical application of sensor is demonstrated in real sample analysis. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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