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Authors
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Senkovskyy, V. ; Tkachov, R. ; Komber, H. ; John, A. ; Sommer, J.-U. ; Kiriy, A.
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Title
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Mechanistic insight into catalyst-transfer polymerization of unusual anion-radical naphthalene diimide monomers: An observation of Ni(0) intermediates
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Date
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10.12.2012
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Number
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35863
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Abstract
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Ni-catalyzed polymerization of anion-radical complexes formed upon mixing of 2,6-bis(2-bromothien-5-yl)naphthalene-1,4,5,8-tetracarboxylic-N,N'-bis(2-octyldodecyl) diimide and activated Zn powder was investigated. We provide experimental evidence that the polymerization involves the chain-growth mechanism and proceeds via Ni(0) complexes which were previously proposed to be key intermediates in other chain-growth catalyst-transfer polycondensations (CTPs), such as Kumada CTP of thiophenic monomers. DFT calculations predict a remarkable stability of the naphthalene diimide-based Ni(0) complexes. A plausible polymerization mechanism is proposed.
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Publisher
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Macromolecules
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Wikidata
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Citation
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Macromolecules 45 (2012) 7770-7777
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DOI
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https://doi.org/10.1021/ma301797w
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Tags
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chain-growth polymerization transfer polycondensation conjugated polymers low polydispersity molecular design nickel-complexes bond activation alkyl-halides solid-state transistors
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