Dendrimers with aromatic surface structure: Synthesis, characterization and properties Determination of the crystal structure

Bulky arylalcoylsilane dendritic molecules, with, respectively 12 and 36 phenyl rings at the periphery, have been synthesized by means of a divergent synthetic method. The first generation has a crystalline structure as demonstrated by the X-ray structure analysis. The H-1 NMR caracterization shows the retention of solvent with the second generation. They may be used as cocatalyst in polycondensation reactions. (C) 1997 Elsevier Science Ltd.