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Controlled Living Ring‐Opening‐Metathesis Polymerization by a Fast‐Initiating Ruthenium Catalyst
Author(s) -
Choi TaeLim,
Grubbs Robert H.
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200250632
Subject(s) - polymerization , dispersity , living polymerization , norbornene , polymer chemistry , catalysis , ring opening metathesis polymerisation , ring opening polymerization , ruthenium , chemistry , reaction rate constant , metathesis , materials science , radical polymerization , organic chemistry , kinetics , polymer , physics , quantum mechanics
Highly active with ultrafast initiation, the catalyst 1 promotes the controlled, living, ring‐opening polymerization of various norbornene and 7‐oxonorbornene derivatives (see scheme). The high k i / k p ratio associated with the polymerization reactions results in better molecular‐weight control and narrower polydispersity indexes (PDIs, k i =rate constant for initiation, k p =rate constant for polymerization).