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Optical chemosensing of arsenite and ferrum ions using 4-(Benzylideneamino)-1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one

Hafiz Muhammad Junaid and Madeeha Batool

Centre for Analytical Chemistry, School of Chemistry, University of the Punjab, Quaid-E-Azam Campus, Lahore, Pakistan

 

E-mail: madeeha.chem@pu.edu.pk

Received: 21 November 2022  Accepted: 29 July 2023

Abstract:

Optical sensors have drawn considerable attention these days due to their quick, easy and on-site detection of metal ions. In this research, a Schiff base “4-(Benzylideneamino)-1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one (V-AAP)” was studied for its naked eye chemosensing abilities to detect metallic ions, i.e., Fe2+, Fe3+, Mn2+, Co2+, Cu2+, Zn2+, Ag+, Hg2+, Pb2+ and AsO2. This colorimetric probe exhibited selective color change from colorless to brownish yellow, pale yellow and greenish yellow for Fe2+, Fe3+ and AsO2 ions, with detection limits of 9.986 × 10–7 M (0.056 ppm), 1.285 × 10–6 M (0.072 ppm) and 2.465 × 10–5 M (2.64 ppm), respectively. Moreover, binding ratios of V-AAP and Fe2+, Fe3+ and AsO2 ions were calculated to be 1:1 with binding constants 1.22 × 102 M−1, 1.30 × 103 M−1 and 9.30 × 101 M−1, correspondingly.

Graphical Abstract

Keywords: Optical Sensing; Naked eye sensing; Colorimetric Sensing; Schiff base; Arsenite ions; Ferrum ions

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-03008-7

 

Chemical Papers 77 (11) 7163–7172 (2023)

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