Synthesis and Self-Assembly of Well-Defined Star and Tadpole Homo-/Co-/Terpolymers
Thomas, Edwin L.
KAUST DepartmentAcademic Affairs
Chemical Science Program
KAUST Catalysis Center
KAUST Catalysis Center (KCC)
Office of the VP
Physical Science and Engineering (PSE) Division
Polymer Synthesis Laboratory
Embargo End Date2020-07-17
Permanent link to this recordhttp://hdl.handle.net/10754/656190
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AbstractTadpole polymers are excellent candidates to explore how architecture can influence self-assembly because they combine two topologies in the same molecule (ring polymer as the head and linear polymer as the tail). In this work, we synthesize well-defined tadpole homo-/co-/terpolymers derived from the appropriate chemical modification reactions of the corresponding 3-miktoarm star homo-/co-/terpolymers via anionic polymerization, high vacuum techniques, and chlorosilane chemistry in combination with the Glaser coupling reaction. The 3-miktoarm star homo-/co-/terpolymers bear two arms with t-butyl dimethylsiloxypropyl functional end-groups, whereas after deprotection, the ω-hydroxyl chain-ends were modified to alkyne moieties. The dialkyne star polymers in the presence of Cu(I)Br and N,N,N′,N″,N″-pentamethyldiethylenetriamine were then transformed to well-defined tadpole homo-/co-/terpolymers. We employed strongly immiscible blocks to enable characterization using electron microscopy and X-ray scattering to explore how the molecular topology influences the self-assembled bulk-state microdomain morphologies.
CitationPolymeropoulos, G., Bilalis, P., Feng, X., Thomas, E. L., Gnanou, Y., & Hadjichristidis, N. (2019). Synthesis and Self-Assembly of Well-Defined Star and Tadpole Homo-/Co-/Terpolymers. Macromolecules, 52(15), 5583–5589. doi:10.1021/acs.macromol.9b01013
SponsorsThe research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) and the National Science Foundation under the Division of Materials Research Polymers Program grant # 1742864. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under contract no. DE-AC02-06CH11357.
PublisherAmerican Chemical Society (ACS)