Intrinsic viscosity of model Starburst dendrimers

Dynamics of Starburst Dendrimers

“…Similar expressions have been suggested by Mansfield and Klushin, and there the center of mass was also used. 27 Under both Rouse and Zimm approximations, one writes H jk ) 〈H jk 〉 ) H jk I. Both upper and lower bounds now coincide with the intrinsic viscosity in a Zimm approximation, Particularly, in the Rouse approximation, H jk ) δ jk , we have which agrees with our previous discussion.…”

“…11,27 The experimental hydrodynamic radii of PAMAM dendrimers were also compared with the computed variational bounds for a P ) 2 dendrimer model. 27 Recently, La Ferla 25 and Cai and Chen 26 proposed analytical approaches to study the dynamics of dendrimer models.…”

“…11,27 The experimental hydrodynamic radii of PAMAM dendrimers were also compared with the computed variational bounds for a P ) 2 dendrimer model. 27 Recently, La Ferla 25 and Cai and Chen 26 proposed analytical approaches to study the dynamics of dendrimer models. La Ferla calculated the radii of gyration (R g ), hydrodynamic radii (R η ), static structure factors, and the first cumulant of the dynamic structure factor, where the hydrodynamic effects were examined without the inclusion of an excluded-volume interaction.…”

Hydrodynamic effects on the extension of stars and dendrimers in external fields

“…[68,71,72] The analysis of the dynamical properties of dendrimers is quite restricted [23,24,73,74] when compared to the considerable number of theoretical investigations on their statistical properties. [47,[75][76][77][78][79] Viewed topologically, dendrimer-type systems are chemical realisations of Cayley-trees, given that the structures have no loops, and any two points are connected by a unique minimal path. For f = 3 the dendrimer consists of N = 3 N 2 G À 1 1 beads, and the number of bonds is 3 N 2 G À 1.…”

The Viscosity of Solutions of Poly(propylene imine) Dendrimers in Methanol

“…A comparison of the viscous behavior of pure dendrimers was made with that of hyperbranched polymers (11). Modeling of the viscosity of dendrimers has only dealt with dilute soltions (12)(13)(14)(15).…”