C1 polymerization: a unique tool towards polyethylene-based complex macromolecular architectures | Zendy

De Wang | Zendy; Zhen Zhang | Zendy; Nikos Hadjichristidis | Zendy

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C1 polymerization: a unique tool towards polyethylene-based complex macromolecular architectures

Author(s) -

De Wang,

Zhen Zhang,

Nikos Hadjichristidis

Publication year - 2017

Publication title -

polymer chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.403

H-Index - 117

eISSN - 1759-9962

pISSN - 1759-9954

DOI - 10.1039/c7py00581d

Subject(s) - polymerization , polyethylene , macromolecule , chemistry , reversible addition−fragmentation chain transfer polymerization , polymer chemistry , materials science , radical polymerization , organic chemistry , polymer , biochemistry

The recent developments in organoborane initiated C1 polymerization (chain grows by one atom at a time) of ylides opens unique horizons towards well-defined/perfectly linear polymethylenes (equivalent to polyethylenes, PE) and PE-based complex macromolecular architectures. The general mechanism of C1 polymerization (polyhomologation) involves the formation of a Lewis complex between a methylide (monomer) and a borane (initiator), followed by migration/insertion of a methylene into the initiator and after oxidation/hydrolysis to afford OH-terminated polyethylenes. This review summarizes efforts towards conventional and newly discovered borane-initiators and ylides (monomers), as well as a combination of polyhomologation with other polymerization methods. Initial efforts dealing with C3 polymerization and the synthesis of the first C1/C3 copolymers are also given. Finally, some thoughts for the future of these polymerizations are presented

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