Dendrimeric organosiloxane with thermopolymerizable –OCFCF2 groups as the arms: synthesis and transformation to the polymer with both ultra-low k and low water uptake

A novel fluoro-containing dendrimeric macromolecule with cyclic siloxane as the core and aryl-trifluorovinyl-ether (–OCFCF2) units as the arms was reported. The macromolecule was easily converted to a cross-linked structure showing an ultra-low k value and low water uptake. In particular, the network also exhibited high thermostability and excellent transparency.