Charged dendrimers in trivalent salt solutions under the action of DC electric fields.
作者： Ashok K. Das , Pai-Yi Hsiao
DOI: 10.1021/JP4116589
关键词: Molecular dynamics 、 Radius of gyration 、 Dendrimer 、 Chemical physics 、 Electrolyte 、 Electric field 、 Electrophoresis 、 Analytical chemistry 、 Chemistry 、 Polarization (electrochemistry) 、 Direct current
摘要: The structural properties and electrophoretic mobility of charged dendrimers in 3:1 electrolyte solutions subjected to direct current electric fields are studied using molecular dynamics simulations. simulated dendrimer size is zero found scale as Rg ∼ N0.29. exhibit shape distortions when the applied field larger than some critical value, which scales with number monomers Ez,crit N0.39(6). Families curves, such curves square radius gyration, asphericity, degree prolateness, dendrimers, shown collapse single, master through appropriate scaling. This reflects fractal characteristics these systems. density profile surface salt cations reveals two pronounced combination effects between polarization complexes stripping-off condensed from surface.
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