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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
Two and three input molecular logic operations mediated by a novel azo-azomethine based chromogenic probe through intramolecular charge transfer processes
Type
JournalPaper
Keywords
logic gate, Diaminomaleonitrile, Azomethine, Sensor
Year
2015
Journal NEW JOURNAL OF CHEMISTRY
DOI
Researchers Khatereh Rezaeian ، Hamid Khanmohammadi

Abstract

A novel azo-azomethine based chromogenic receptor containing diaminomaleonitrile fragment and pyridine ring has been designed and synthesized for fabrication of multifunctional molecular logic circuits. The current system exhibited absorption response profiles varying significantly with different anionic and cationic inputs in DMSO-water (9:1) through the modulation of intramolecular charge transfer (ICT) processes. The responsive mechanism of the system was also explored and elucidated. Importantly, the changes of absorbance output signals at particular wavelengths in response to Fˉ and Zn2+ as two chemical inputs provided opportunities for elaboration of 2-bit Boolean binary logic functions like OR and INHIBIT gates. Successfully, a 3-input logic network composed of EnNOR combinational circuit could also be interpreted using Fˉ, Zn2+ and Cu2+ as input variables. Furthermore, the integration of fundamental logic functions was discussed to establish complex logic circuits including reconfigurable 2-bit logic gates and the three-input combinatorial logic circuits. More interestingly, based on the reversible and reproducible switching behaviour of the fluoride interaction with Ca2+, we presented a potential “Write–Read–Erase–Read” memory function possessing multi-write ability.