Herein, we present a quasi-living Negishi-type catalyst-transfer polycondensation of a zinc–organic DTSbased monomer which provides an access to narrowly distributed poly(4,4-bis(2-ethylhexyl)dithieno[3,2-b:20,30-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 magnesium–organic thiophene-based monomer efficiently initiate NCTP of zinc–organic 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.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:36424 |
| Date | 16 December 2019 |
| Creators | Erdmann, T., Back, J., Tkachov, R., Ruff, A., Voit, B., Ludwigs, S., Kiriy, A. |
| Publisher | Royal Society of Chemistry |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 1759-9962, 10.1039/c4py00747f, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/Cluster of Excellence ‘Center for Advancing Electronics Dresden’/KI-1094/40//Elementary Processes of Organic Photovoltaics |
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