Donor−Acceptor Diblock Copolymers Based on PPV and C60:  Synthesis, Thermal Properties, and Morphology

An improved synthetic method to nitroxide end-capped poly(p-phenylenevinylene)s is presented. The nitroxide-functionalized PPVs are extended with a second coillike block by employing them as macroinitiators in a nitroxide-mediated radical polymerization (NMRP) of monomers like styrene, 4-chloromethy...

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Bibliographic Details
Published in:Macromolecules 2004-05, Vol.37 (10), p.3673-3684
Main Authors: van der Veen, Marleen H, de Boer, Bert, Stalmach, Ulf, van de Wetering, Karin I, Hadziioannou, Georges
Format: Article
Language:English
Subjects:
Applied sciences
Copolymerization
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
Online Access:Get full text
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Summary:An improved synthetic method to nitroxide end-capped poly(p-phenylenevinylene)s is presented. The nitroxide-functionalized PPVs are extended with a second coillike block by employing them as macroinitiators in a nitroxide-mediated radical polymerization (NMRP) of monomers like styrene, 4-chloromethylstyrene, 4-vinylpyridine, and n-butyl acrylate. The observed thermotropic properties and morphology of films based on the rod−coil diblock copolymers are identified and described. Some of the block copolymers are subsequently subjected to a coupling with C60 to incorporate electron-accepting properties into these PPV-based diblock copolymers. For this, a statistical copolymer built from styrene and azidomethylstyrene was used as the second coillike block, making it possible to adjust the built-in ratio of C60. The morphology and thermotropic properties of films prepared with these diblock copolymers are investigated.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma035643o