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Chain Growth Polycondensation as a Polymer Generating Reaction in the Synthesis of Oligo( p ‐phenyleneethynylene)s with Low Polydispersity
Author(s) -
Kovalev Aleksey I.,
Takeuchi Kazuhiko,
Barzykin Alexander V.,
Asai Michihiko,
Ueda Mitsuru,
Rusanov Alexander L.
Publication year - 2005
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200500154
Subject(s) - condensation polymer , dispersity , polymer chemistry , polymer , chemistry , molar mass distribution , chain (unit) , molecular mass , organic chemistry , enzyme , physics , astronomy
Abstract Summary: The polycondensation of 1‐ethynyl‐2,5‐dihexyl‐4‐iodobenzene in the presence of 1‐ethynyl‐2,5‐dihexyl‐4‐(2‐phenylethynyl)benzene proceeds according to the mechanism of initiated chain growth polycondensation. It has allowed the synthesis of oligomers with a desired molecular weight and a narrow molecular weight distribution. The reasons for the side reaction leading to the formation of diyne compounds are revealed and the presumed mechanism is given. This opens prospects for the preparation of defectless poly( p ‐phenyleneethynylene)s with required molecular weights and narrow molecular weight distributions.