Polythiophene-graft-styrene and polythiophene-graft-(styrene-graft-C60) copolymers

Chen, Xiwen, Gholamkhass, Bobak, Han, Xu, Vamvounis, George, and Holdcroft, Steven (2007) Polythiophene-graft-styrene and polythiophene-graft-(styrene-graft-C60) copolymers. Macromolecular Rapid Communications, 28 (17). pp. 1792-1797.

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Poly(3-hexylthiophene) was quantitatively brominated and subsequently used in the Suzuki cross-coupling with a boronic ester of a nitroxide to form a macroinitiator bearing a TEMPO group on each thienyl ring. This macroinitiator initiated the nitroxide-mediated radical polymerization of styrene and 4-chloromethylstyrene (CMS), and subsequently reacted with C60 to yield soluble graft, rod-coil polymers. Films of the polymers display a bi-continuous phase structure as revealed by AFM. Similar polymers, in which only a fraction of the thienyl units boasted C60-bearing side chains, displayed optical properties representative of extensive π-delocalization. The potential application of this methodology for the synthesis of graft polymers for photovoltaic devices is discussed.

Item ID: 32722
Item Type: Article (Research - C1)
ISSN: 1521-3927
Keywords: conjugated polymers, fullerenes, graft copolymers, polythiophenes, radical polymerization, self-assembly
Funders: Natural Sciences and Engineering Research Council of Canada
Date Deposited: 25 Jun 2014 05:20
FoR Codes: 03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030505 Physical Organic Chemistry @ 100%
SEO Codes: 85 ENERGY > 8505 Renewable Energy > 850504 Solar-Photovoltaic Energy @ 100%
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