Biochemistry & Molecular Biology الكيمياء الحيوية والأحياء الجزيئية

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Browsing Biochemistry & Molecular Biology الكيمياء الحيوية والأحياء الجزيئية by Author "Aya Ibrahim Mousa Ja'freh"

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    Zeta potential of electric double layer for dendrimers: Monte Carlo simulation study
    (Al-Quds University, 2023-11-28) Aya Ibrahim Mousa Ja'freh; اية ابراهيم موسى جعافرة
    In this study, the potential of the electric double layer (EDL) of different generations of dendrimers in a spherical boundary system has been studied using Monte Carlo (MC) simulations. The effects of Changing the dielectric constant of the solvent, the charge and the radius of generations from G1 to G8, have been studied. The radial distribution function between dendrimer and counterions, running coordination number, integrated charge number, Z effective, zeta and surface potentials were plotted as results of simulation methods. Dendrimers possess a higher electrostatic potential near their surfaces, it increases with the increase of the counterions and the values of distributed ions and accumulated charge increase when the generation of Dendrimers increase. An observed correlation indicates that as generation increases, there's a simultaneous rise in the zeta potential of the electric double layer and the surface potential. This concurrent increase leads to a higher effective charge (Zeff) within the positive region, suggesting elevated charge accumulation. With the dielectric constant =10 that represents the cytoplasm, the interaction between dendrimer and counterions increases, as well as the accumulation near the surface that increases too. Moreover, the electrostatic correlation, the accumulated charge and the magnitude of the electrostatic potential increase with increasing the generation of Dendrimers. The surface potential increases as the generation of the dendrimer increase. However, the values of zeta potential decrease as generation of Dendrimers increase.