Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 6, Pages 1552-1556Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201710964
Keywords
block copolymers; nanoparticles; polymerizations; radical reactions
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Funding
- Start-Up-Grant of Nanyang Technological University
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Temperature-selective radical generation from a newly designed alkyl diiodide (I-R-2-R-1-I) was studied. R-1-I and I-R-2 had different reactivities for generating alkyl radicals in the presence of a tetraoctylammonium iodide (ONI) catalyst. Taking advantage of the temperature selectivity, we used the alkyl diiodide as a dual initiator in ONI-catalyzed living radical polymerization to uniquely synthesize CABC non-symmetric multi-block copolymers. Because of their non-symmetric structure, CABC multi-block copolymers form unique assemblies, that is, Janus-type particles with hetero-segment coronas and flower-like particles with hetero-segment petals.
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