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Updated: Feb 22, 2026
Accumulation and Analysis of Cuprous Ions in a Copper Sulfate Plating Solution
Published on: March 20, 2019
Binding mode dependent signaling for the detection of Cu2+: An experimental and theoretical approach with practical
Soumen Ghosh1, Mehebub Ali Khan2, Aniruddha Ganguly1
1Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India.
Abstract:
Two amido-schiff bases (3-Hydroxy-naphthalene-2-carboxylic acid pyren-1-ylmethylene-hydrazide and Naphthalene-2-carboxylic acid pyren-1-ylmethylene-hydrazide) have been synthesized having a common structural unit and only differs by a -OH group in the naphthalene ring. Both of them can detect Cu2+ ion selectively in semi-aqueous medium in distinctly different output modes (one detects Cu2+ by naked-eye color change where as the other detects Cu2+ by fluorescence enhancement). The difference in the binding of Cu 2+ with the compounds is the reason for this observation. The detection limit is found to be micromolar region for compound which contains -OH group whereas the compound without -OH group detects copper in nano-molar region. DFT calculations have been performed in order to demonstrate the structure of the compounds and their copper complexes. Practical utility has been explored by successful paper strip response of both the compounds. The biological applications have been evaluated in RAW 264.7.
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