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Issue 40, 2016, Issue in Progress
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Nanoporous poly(3-hexylthiophene) thin films based on “click” prepared degradable diblock copolymers

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Abstract

A facile approach to control the nanostructured organization of conjugated polymer platforms is proposed, based on the synthesis and characterization of copolymers containing a cleavable group inside the chain. This is illustrated by copolymerization of electroconjugated units representing regioregular poly(3-hexylthiophene) obtained by Grignard metathesis polymerization with a terminal alkynyl group and a sacrificial unit of poly(ethylene oxide) with a functionalized end azide group. The diblock copolymers were successfully synthesized via a click coupling reaction between blocks, where an acid degradable acetal group was incorporated. The strategy for formation of thin porous poly(3-hexylthiophene) films includes acid treatment of diblock copolymers, accompanied by the degradation of the acetal linker and easy removal of the poly(ethylene oxide) block. The study displays an appropriate strategy to convert nanoporous poly(3-hexylthiophene) thin films into suitable high surface area matrices, which, after successful filling with electron acceptor material, could create novel nanostructures for organic photovoltaics.

Graphical abstract: Nanoporous poly(3-hexylthiophene) thin films based on “click” prepared degradable diblock copolymers

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Supplementary files

Article information


Submitted
12 Jan 2016
Accepted
23 Mar 2016
First published
28 Mar 2016

RSC Adv., 2016,6, 33468-33477
Article type
Paper

Nanoporous poly(3-hexylthiophene) thin films based on “click” prepared degradable diblock copolymers

G. Grancharov, V. Gancheva, P. Petrov, J. De Winter, P. Gerbaux, P. Dubois and O. Coulembier, RSC Adv., 2016, 6, 33468
DOI: 10.1039/C6RA00952B

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