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Straightforward Synthesis of Conjugated Block Copolymers by Controlled Suzuki–Miyaura Cross-Coupling Polymerization Combined with ATRP

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2019

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https://doi.org/10.1021/acs.macromol.9b01165
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Macromolecules. 2019, 52(15), pp. 5917-5924. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/acs.macromol.9b01165

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Catalytic chain growth Suzuki–Miyaura polymerization of an AB-fluorene monomer using isolated (Ini1) or in situ generated (Ini2) Phos-Ph-Pd(tBu3P)Br as an initiator afforded well-defined heterodifunctional polyfluorenes featuring a phosphonate group (initiating chain end) and a radically polymerizable (Phos-PF8-Sty) or atom transfer radical polymerization (ATRP)-initiating (Phos-PF8-AlkylBr) group (terminating chain end). The resulting Phos-PF8-AlkylBr polymer was directly employed for the growth of a second nonconjugated block by controlled activators regenerated by electron transfer ATRP without the need for further intermediate conversion steps. The PF8 macroinitiator was found to be a viable initiator for the generation of narrowly distributed diblock copolymers with a controlled block length of PF8 and polystyrene, poly(methyl methacrylate), or poly(2-ethylhexyl methacrylate), respectively. Novel conjugated nonconjugated comb polymers were generated by controlled radical copolymerization of PF8 macromonomers, bearing a styrene end group, with styrene or methacrylates. Thereby, it was possible to tune the number of phosphonate moieties per chain between 2 and 15.

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ISO 690HUBER, Steffen, Stefan MECKING, 2019. Straightforward Synthesis of Conjugated Block Copolymers by Controlled Suzuki–Miyaura Cross-Coupling Polymerization Combined with ATRP. In: Macromolecules. 2019, 52(15), pp. 5917-5924. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/acs.macromol.9b01165
BibTex
@article{Huber2019-08-13Strai-46781,
  year={2019},
  doi={10.1021/acs.macromol.9b01165},
  title={Straightforward Synthesis of Conjugated Block Copolymers by Controlled Suzuki–Miyaura Cross-Coupling Polymerization Combined with ATRP},
  number={15},
  volume={52},
  issn={0024-9297},
  journal={Macromolecules},
  pages={5917--5924},
  author={Huber, Steffen and Mecking, Stefan}
}
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