Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 28, Pages 11613-11619Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202004013
Keywords
frustrated Lewis pairs; living polymerization; multiblock copolymers; organophosphorus superbase; sequence control
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Funding
- National Natural Science Foundation of China [21774042, 21871107, 21975102]
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An immortal N-(diphenylphosphanyl)-1,3-diisopropyl-4,5-dimethyl-1,3-dihydro-2H-imidazol-2-imine/diisobutyl (2,6-di-tert-butyl-4-methylphenoxy) aluminum (P((NIPr)-Pr-i)Ph-2/(BHT)(AlBu2)-Bu-i)-based frustrated Lewis pair (FLP) polymerization strategy is presented for rapid and scalable synthesis of the sequence-controlled multiblock copolymers at room temperature. Without addition of extra initiator or catalyst and complex synthetic procedure, this method enabled a tripentacontablock copolymer (n=53, k=4, dp(n)=50) to be achieved with the highest reported block number (n=53) and molecular weight (M-n=310 kg mol(-1)) within 30 min. More importantly, this FLP polymerization strategy provided access to the multiblock copolymers with tailored properties by precisely adjusting the monomer sequence and block numbers.
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