فهرست مطالب samaneh tayebi-moghaddam
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In this investigation, the function of the smallest fullerene (C20) as a sensor and nano-carrier for the tricyclic antidepressant drug desipramine was scrutinized through density functional theory simulations. The achieved adsorption energies showed the interaction of desipramine with C20 is experimentally possible. The calculated ΔGad, ΔHad and Kth showed the adsorption process is spontaneous, exothermic and reversible. The influences of solvent and temperature on the interactions were also studied and the results showed the adsorption process is more favorable in lower temperatures and the presence of solvent does not have any effect on the nature of interactions. The NBO analysis showed no chemical bond has been created between desipramine and nanostructure and the existing interaction is a physisorption. The frontier molecular orbital analysis results showed the bandgap of fullerene decline -35.30% from 7.678 (eV) to 2.484 (eV) indicating this nanomaterial can be an ideal sensor for the detection of desipramine. The values of dipole moment and chemical hardness showed C20 can be employed as an appropriate nano-carrier for the drug delivery of desipramine.Keywords: Desipramine, density functional theory, Adsorption, sensor, Nanocarrier, Tricyclic antidepressants}
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Acrylamide is a toxic chemical that is formed in starchy foods like potato chips and can cause cancer in humans. Therefore, its detection is of great importance. In this research, the performance of C24 fullerene as an electrocatalytic sensing material for acrylamide was checked out by DFT simulations. The obtained adsorption energies showed acrylamide interaction with C24 is experimentally feasible. The calculated thermodynamic parameters including ΔGad, ΔHad, and Kth showed acrylamide adsorption process is spontaneous, exothermic, and reversible. The NBO results demonstrated no chemical bond has created between acrylamide and fullerene in the adsorption procedure, hence the adsorption nature is a physisorption. The calculated frontier molecular orbital indices showed the bandgap of fullerene experienced a -52% decline after interacting with acrylamide. Therefore, this nanostructure can be employed as an excellent electrocatalytic sensing material for the fabrication of a new electrochemical sensor for the determination of acrylamide.
Keywords: Acrylamide, density functional theory, Adsorption, Fullerene (C24), sensor}
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