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Understanding the Morphologies and Polymerization Mechanism of Homopolymer and Block Copolymer Brushes by Living Anionic Surface Initiated Polymerization

Published online by Cambridge University Press:  11 February 2011

Mi-Kyoung Park ,
George Sakellariou ,
Stergios Pispas ,
Nikos Hadjichristides ,
Jimmy Mays  and
Rigoberto Advincula
Mi-Kyoung Park
Affiliation:
Dept. of Chemistry, University of Houston, Houston, Texas 77204, USA
George Sakellariou
Affiliation:
Department of Chemistry, University of Athens 15701 Zografou, Athens, Greece
Stergios Pispas
Affiliation:
Department of Chemistry, University of Athens 15701 Zografou, Athens, Greece
Nikos Hadjichristides
Affiliation:
Department of Chemistry, University of Athens 15701 Zografou, Athens, Greece
Jimmy Mays
Affiliation:
Dept. of Chemistry, University of Tennessee, Knoxville, Tennessee, USA
Rigoberto Advincula
Affiliation:
Dept. of Chemistry, University of Houston, Houston, Texas 77204, USA
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Abstract

Homopolymer and block copolymer brushes grafted from Au and Si (SiOx) surfaces via living anionic surface initiated polymerization (LASIP) has been reported. 1,1-diphenylethylene (DPE) derivative, an initiator for anionic polymerization, was grafted onto planar Si-wafer and Au surfaces by self-assembled monolayer (SAM) techniques. n-BuLi was used to activate the DPE for anionic polymerization of monomers at the interface under high vacuum. By a careful sequence of monomer introduction, reaction, and termination, homopolymer and block copolymer tethered polymer brushes were obtained. The importance of initiator activation, control of polymerization conditions, and removal of excess BuLi is emphasized. Interesting differences in morphology, thickness, grafting density, and polymerization conditions contrasts LASIP from solution and other surface initiated polymerization (SIP) mechanisms. The formation of block copolymer sequences highlights the unique utility of a living anionic polymerization technique on surfaces.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 734: Symposia A/B – Defect-Mediated Phenomena in Ordered Polymers – Polymer/Metal Interfaces and Defect Mediated Phenomena in Ordered Polymers , 2002 , A3.6
Copyright
Copyright © Materials Research Society 2003

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References

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