Journal of Polymer Science Part A: Polymer Chemistry, Vol.40, No.8, 976-982, 2002
Staff-type dendrimer: End functionalization of the dendronized siloxane polymer Me3SiO-(MeSiHO)(n)-SiMe3
A staff-type dendritic carbosilane was synthesized with the siloxane polymer Me3SiO-[MeSi(H)O](n)-SiMe3 as the core. Through hydrosilation and alcoholysis, the polymeric core grew to the second generation, which contained three, six, and nine allyloxy end groups on each siloxane unit backbone, respectively. The reaction of the monofunctionalized second-parent generation, which had three Si-Cl groups on the peripheral layer of the unit backbone, with allylalcohol, cholesterol, 8-hydroxyquinoline, 5-(2-hydroxyl)-4-methylthiazole, 4-pyridinepropanol, and 4-pyridinealdoxime in the presence of 1,1,2,2-tetramethyethylenediamine, produced end-functionalized, staff-type dendrimers. The characterization of the dendritic polymers was carried out with NMR spectroscopy and gel permeation chromatography as well as elemental analysis.