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Block copolymers with stable radical and fluorinated groups by ATRP

  • Clemens Liedel (a1), Austin Moehle (a2), Gregory D. Fuchs (a2) and Christopher K. Ober (a1)
Abstract
Abstract

Polymers with stable radical groups are promising materials for organic electronic devices due to their unique redox activity. Block copolymers with one redox active block could be used in nanostructured devices for electronic applications. We report on the synthesis and characterization of such multifunctional block copolymers in which phase separation on the 10 nm (half pitch) scale is achieved by using fluorinated blocks. Fluorination of one block increases the degree of phase separation and leads to smaller accessible domain sizes. Block copolymers with 60%, 80% and 90% of a stable radical containing block and either fluorinated or non-fluorinated second blocks were made by atom transfer radical polymerization, and their microstructure formation as a function of fluorine content is described after solvent vapor or thermal annealing. Electrical characterization of such a partly fluorinated block copolymer shows their potential for electronic devices.

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Address all correspondence to Christopher K. Ober atcko3@cornell.edu
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MRS Communications
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