Preparation of Cobaltocenium-Labeled Polymers by Atom Transfer Radical Polymerization

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• 作者：Lixia Ren ; Jiuyang Zhang ; Christopher G. Hardy ; Deon Doxie ; Barbara Fleming ; Chuanbing Tang
• 刊名：Macromolecules
• 出版年：2012
• 出版时间：March 13, 2012
• 年：2012
• 卷：45
• 期：5
• 页码：2267-2275
• 全文大小：537K
• 年卷期：v.45,no.5(March 13, 2012)
• ISSN：1520-5835

文摘

Cobaltocenium-labeled polymers were prepared by atom transfer radical polymerization (ATRP) using cobaltocenium-containing 伪-haloesters as initiators. The locations of the cobaltocenium moiety in the polymer chains (either at the end or in the middle) were dictated by the chemical structures of initiators. Kinetic studies showed that polymerizations of styrene, tert-butyl acrylate, and methyl methacrylate monomers followed a controlled/living manner, except that polymerization of methyl methacrylate with the aid of cobaltocenium monoinitiator displayed significant termination. All resultant polymers were redox-active and exhibited characteristic UV鈥搗is absorption from the cobaltocenium moiety.