![Scientific and Technical Journal
of Information Technologies, Mechanics and Optics](/images/mag-ntv.png)
FUNCTIONAL GROUPS IONIZATION EFFECT ON CONFORMATIONAL PROPERTIES OF DENDRITIC MOLECULAR BRUSHES
![Scientific and Technical Journal
of Information Technologies, Mechanics and Optics](/images/mag-ntv.png)
Annotation
Conformational properties of dendronized molecular brushes with ionized terminal groups in the dilute solution were studied by the Scheutjens-Fleer numerical self-consistent field method. Brushes with the same molecular mass and grafting density of dendrons but different generation number were compared. The ionic strength was varied within the conditions of the good (athermal) solvent. It was shown that the brush thickness increases with the ionic strength decrease as a result of the deformation of grafted dendrons. The induced persistence length, which characterizes the contribution of the grafted branches into the bending elasticity of the brush, behaves differently at large and small ionic strengths. At high salt concentration the brushes with more branched dendrons show smaller bending elasticity similar to their neutral analogs. At low ionic strengths the induced persistence length increases by an order and depends very weakly on the dendron architecture.
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