Fullerene (C۲۰) as a sensing material for electrochemical detection of Nortriptyline: A theoretical study

Quantification of nortriptyline (NTP) as an antidepressant medicine is of great importance. Therefore, in this research, (NTP) adsorption on the surface of fullerene C۲۰ was studied by density functional theory computations. The calculated adsorption energies showed NTP interaction with C۲۰ is experimentally possible. The negative values of enthalpy alterations, Gibbs free energy changes and great values of thermodynamic constants indicated the adsorption process is spontaneous. The negative values of adsorption enthalpy changes revealed the interaction of NTP with fullerene is exothermic. The bandgap of fullerene after adsorption of NTP increased %۲۹۶.۴۱۰ from ۱.۹۵۰ (eV) to ۷.۷۳۰ (eV) indicating the electrical conductivity of fullerene experienced a very sharp alteration during the interaction process. Therefore, C۲۰ can be used as a sensor for electrochemical detection of NTP. The influence of the temperature on the NTP interaction with fullerene was also investigated and the results showed the adsorption process is more favorable in the lower temperatures.

Keywords:

Nortriptyline , Tricyclic antidepressants , fullerene (C۲۰) , Adsorption , Density functional theory