Nat Commun
Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei, 230009, Anhui Province, China.
Published: February 2022
Diazoacetate polymerization has attracted considerable research attention because it is an effective approach for fabricating carbon-carbon (C-C) main chain polymers. However, diazoacetate polymerization based on inexpensive catalysts has been a long-standing challenge. Herein, we report a Ni(II) catalyst that can promote the living polymerization of various diazoacetates, yielding well-defined C-C main chain polymers, polycarbenes, with a predictable molecular weight (M) and low dispersity (M/M). Moreover, the Ni(II)-catalyzed sequential living polymerization of thiophene and diazoacetate monomers affords interesting π-conjugated poly(3-hexylthiophene)-block-polycarbene copolymers in high yields with a controlled M, variable compositions, and low M/M, although the structure and polymerization mechanism of the two monomers differ. Using this strategy, amphiphilic block copolymers comprising hydrophobic poly(3-hexylthiophene) and hydrophilic polycarbene blocks are facilely prepared, which were self-assembled into well-defined supramolecular architectures with tunable photoluminescence.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8831484 | PMC |
http://dx.doi.org/10.1038/s41467-022-28475-6 | DOI Listing |
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