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Authors
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Erdmann, T. ; Back, J. ; Tkachov, R. ; Ruff, A. ; Voit, B. ; Ludwigs, S. ; Kiriy, A.
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Title
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Dithienosilole-based all-conjugated block copolymers synthesized by a combination of quasi-living kumada and negishi catalyst-transfer polycondensations
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Date
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15.08.2014
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Number
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43963
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Abstract
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Herein, we present a quasi-living Negishi-type catalyst-transfer polycondensation of a zincorganic DTS-based monomer which provides an access to narrowly distributed poly(4,4-bis(2-ethylhexyl)dithieno[3,2-b:2',3'-d]silole (PDTS) with controlled molecular weight. The synthesis of well-defined all-conjugated diblock copolymers containing a PDTS block was accomplished by a combination of Kumada and Negishi catalyst-transfer polycondensations (KCTP and NCTP, respectively). Particularly, it was shown that living P3HT chains obtained by KCTP of magnesiumorganic thiophene-based monomer efficiently initiate NCTP of zincorganic DTS-based monomer. The purity of the DTS-based monomer was found to be a crucial factor for achieving a clean chain-growth polymerization process. A combination of physico-chemical methods was used to prove the success of the block copolymerization.
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Publisher
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Polymer Chemistry
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Wikidata
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Citation
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Polymer Chemistry 5 (2014) 5383-5390
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DOI
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https://doi.org/10.1039/C4PY00747F
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Tags
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chain-growth polymerization field-effect transistors regioregular poly(3-hexylthiophene) naphthalene diimide universal method polymers mobility diblock poly(p-phenylene) polythiophenes
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