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Cobaltocenium‐Containing Block Copolymers: Ring‐Opening Metathesis Polymerization, Self‐Assembly and Precursors for Template Synthesis of Inorganic Nanoparticles
Author(s) -
Ren Lixia,
Zhang Jiuyang,
Hardy Christopher G.,
Ma Shuguo,
Tang Chuanbing
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100732
Subject(s) - copolymer , micelle , polymerization , polymer chemistry , materials science , nanoparticle , romp , cobalt , ring opening metathesis polymerisation , ozonolysis , metathesis , chemical engineering , polymer , chemistry , organic chemistry , nanotechnology , metallurgy , composite material , aqueous solution , engineering
Side‐chain cobaltocenium‐containing block copolymers are prepared by ring‐opening metathesis polymerization (ROMP). These block copolymers include one cobaltocenium‐containing block, with the second block being either a nonmetal‐containing segment or a cobaltocenium‐containing segment with different counterions. These block copolymers are self‐assembled into spherical core/shell micelles in solutions. A template strategy is used to prepare cobalt (II or III)‐containing nanoparticles by treating the self‐assembled micelles via UV/ozonolysis and pyrolysis. Characterization by X‐ray photon spectroscopy and X‐ray diffraction indicates that these nanoparticles consist of different oxidants of cobalt, depending on the chemical compositions of block copolymers.