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Synthesis and Direct Imaging of Ultrahigh Molecular Weight Cyclic Brush Polymers
Author(s) -
Xia Yan,
Boydston Andrew J.,
Grubbs Robert H.
Publication year - 2011
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.201101860
Subject(s) - brush , polymer , materials science , polymer brush , polymerization , metathesis , polymer chemistry , chemical engineering , nanotechnology , composite material , engineering
Convenient route to cyclic polymers : Ultrahigh molecular weight cyclic brush polymers were synthesized through ring‐expansion metathesis polymerization of various macromonomers. Atomic force microscopy was used to visualize toroidal shapes and large opening pores, along with linear chains, which may result from high sensitivity of brush polymers to mechanical degradation.