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Hamid Khanmohammadi

Hamid Khanmohammadi

Academic rank: Professor
ORCID: https://orcid.org/0000-0001-5600-4738
Education: PhD.
ScopusId: 22734138900
Faculty: Science
Address: Arak University
Phone:

Research

Title
Detection of CN−, Cu2+ and Zn2+ ions using a new chromone-based colorimetric chemosensor: Half-adder and integrated circuits
Type
JournalPaper
Keywords
Aqueous environment; Chromone; Colorimetric receptor; Half-adder; Three-input logic circuit.
Year
2020
Journal Analytical Methods
DOI
Researchers Khatereh Rezaeian ، Hamid Khanmohammadi

Abstract

A new chromone-based azomethine chemsensor, L, has been designed, synthesized and fully characterized spectroscopically. Successfully, the chemosensor L was used to detect and recognize Cu2+, Zn2+ and CN− ions both visually and spectro-photometrically. The ions recognition mechanism was examined using 1H NMR and UV-visible continuous variation titration. The detection limit of Cu2+, Zn2+ and CN− ions are 5.50×10-7, 8.70×10-7 and 1.56×10-6 mol L-1, respectively, which are lower than the WHO permissible level of the mentioned ions for safe drinking. The significant changes in the UV-visible spectra in the presence Cu2+ and CN− ions, as two variable inputs, prompted ud to conduct AND and XOR operations of half-adder circuit on one single substrate. On the merits of devised sensory system, 2-bit Boolean Binary logic functions like OR and NOR gates were also elaborated. Expectedly, the individual logic gates including AND, OR, INH and NOR can be brought together through the combinatorial and complex three-input operations to function as integrated logic circuits utilizing Cu2+, CNˉ and Zn2+ as chemical inputs.