Synthesis and characterization of linear, hyperbranched, and dendrimer-like polymers constituted of the same repeating unit

The synthesis of a linear polymer that includes both P=N and P=S double bon ds, and P-O and P-C single bonds is reported by using two different paths t hat involve deprotectjon reactions and the Staudinger reaction. The prepara tion of hyperbranched polymers made up of OC6H4P(Ph)(2)=N-P=S repeating uni ts is also described. Five generations of dendrimers originating from the s ame building blocks were prepared. The characterisation of all these phosph orus-based macromolecular architectures (solution behaviour, size exclusion chromatography, intrinsic viscosity, thermal behaviour) revealed marked di fferences in their respective behaviour.