Synthesis of Polyethylene Nanoparticles with Chain Walking Catalysts

Dendrimers and their practical analogs, the hyperbranched polymers, are the most interesting architectures in macromolecules which show drastically different properties incomparison with their linear counterparts. Due to higher tendency of Pd complexes with bulky α-diimine ligands tochain walking instead of monomer insertion, they can producevery fascinating and complex dendritic polyethylenes (DPE) nanoparticles in one pot without use of comonomers [1, 2].DPE’s as a new class of polyolefins have many potential applications such as controlled drug delivery [2] and surfacemodification of CNTs, and their molecular weight (Mw) and size are vital parameters in effectiveness and efficiency in these applications. In this work, electrically and stericallymodulated diimine based Pd catalysts were synthesized and used for control of Mw and size in a wide range in DPEs