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Bis ‐Pyridyl Diimines as Selective and Ratiometric Chemosensor for Ni(II) and Cd(II) Metal Ions
Author(s) -
Das Moyna,
Sarkar Madhushree
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802924
Subject(s) - chemistry , detection limit , metal ions in aqueous solution , nickel , schiff base , ion , metal , selectivity , butane , nuclear chemistry , inorganic chemistry , stereochemistry , chromatography , organic chemistry , catalysis
A pyridyl based Schiff base compound, (1E,1′E)‐N,N′‐(butane‐1,4‐diyl) bis (1‐(pyridin‐2‐yl)methanimine) ( 2pdab ) was observed to serve as a highly selective and sensitive ratiometric chemosensor for Ni 2+ and Cd 2+ ions. Mole ratio method and Yoe Jone's method showed a 1:1 binding mode of metal ions (Ni 2+ and Cd 2+ ) with 2pdab , while a binding constant of 26.88 ×10 6 L/mol and 4.29×10 6 L/mol, for Ni 2+ and Cd 2+ , respectively, was determined. The limit of detection of 2pdab in sensing Ni 2+ and Cd 2+ was observed to be 3.08 μM and 1.4688 μM, respectively. The selectivity of 2pdab to detect Cd 2+ and Ni 2+ among various other competitive ions was also studied. The sensor, 2pdab , was applied in real time application for detection of nickel ion in river water sample.