Dehydroacetic acid Derived Schiff base as Selective and Sensitive Colorimetric Chemosensor for the Detection of Cu(II) ions in Aqueous Medium
Vashisht, Devika; Sharma, Shikha; Kumar, Rakesh; Saini, Vaneet; Saini, Vikram; Ibhadon, Alex; Sahoo, Subash Chandra; Sharma, Shweta; Mehta, S K; Kataria, Ramesh
Dr Alex Ibhadon A.O.Ibhadon@hull.ac.uk
Reader in Catalysis and Reactor Engineering
Subash Chandra Sahoo
S K Mehta
14 The deficiency, as well as overconsumption of essential metal ions, has serious health 15 implications. Hence, the design and synthesis of sensors for accurate detection of such ionic 16 species are of great significance. We report the synthesis and characterization of a yellow-17 coloured Dehydroacetic acid-based chemosensor DHB ((E)-N-(1-(2-hydroxy-6-methyl-4-oxo-18 4H-pyran-3-yl) ethylidene) benzohydrazide for a quick and affordable copper detection. A 19 naked-eye visible colour transition from light yellowish to bluish green was observed instantly 20 following Cu 2+ addition. DHB did not yield colour change with any other ionic species indicating 21 its specificity. The binding of DHB to Cu 2+ caused a blue shift accompanied by an increased 22 intensity due to an intramolecular charge transfer (ICT). No interference from competitive ionic 23 species reiterated the selectivity of this probe. The outcomes of single-crystal X-ray analysis, 24 titration studies, and Job's plot indicated a 1:2 stoichiometry between Cu 2+ and DHB. The 25 experimental results matched well with the theoretical results obtained from Density Functional 26 Theory (DFT) calculations. The practical applicability of the probe for Cu 2+ estimation was 27 further determined using water samples from various sources. The sensor could detect copper as 28 low as 0.156 í µí¼M in an aqueous media which is very less than the permissible value of 20 í µí¼M in 29 water. 30 31 32 33 2
|Journal Article Type||Article|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Vashisht, D., Sharma, S., Kumar, R., Saini, V., Saini, V., Ibhadon, A., …Kataria, R. (2020). Dehydroacetic acid Derived Schiff base as Selective and Sensitive Colorimetric Chemosensor for the Detection of Cu(II) ions in Aqueous Medium. Microchemical journal, 155, https://doi.org/10.1016/j.microc.2020.104705|
|Keywords||Colorimetric detectionCu(II)Schiff's base; Chemosensor; Dehydroacetic acid; DFT calculations; X-ray diffraction|
|Additional Information||Article details pending|
This file is under embargo until Feb 8, 2021 due to copyright reasons.
Contact A.O.Ibhadon@hull.ac.uk to request a copy for personal use.