Dielectric study of dendritic macromolecules

Combined D.D.S. and T.S.C, techniques allow us to follow temperature and frequency dependence of relaxation mode, and gives us more information about behaviour law and molecular mobility of dendrimers. Dipolar nature of the relaxation modes in those phosphorus-containing dendrimers has been shown. Evolution from a simple relaxation mode (G'/sub 0/) to a complex relaxation mode (G'/sub 2/), comes into sight as an influence of specific architecture. Global polarisation increases with generation by discrete additional dipolar relaxation. Generation looks to be directly linked with the dielectric polarisation of those macromolecules.