Polyphosphinoborane block copolymer synthesis using catalytic reversible chain-transfer dehydropolymerization
Date
2023
Authors
Race, James J.
Heyam, Alex
Wiebe, Matthew A.
Hernandez, J. Diego-Garcia
Ellis, Charlotte E.
Lei, Shixing
Manners, Ian
Weller, Andrew S.
Journal Title
Journal ISSN
Volume Title
Publisher
Angewandte Chemie International Edition
Abstract
An amphiphilic block copolymer of polyphosphinoborane has been prepared by a mechanism-led strategy of the sequential catalytic dehydropolymerization of precursor monomers, H₃B ⋅ PRH₂ (R=Ph, n-hexyl), using the simple pre-catalyst [Rh(Ph₂PCH₂CH₂PPh₂)₂]Cl. Speciation, mechanism and polymer chain growth studies support a step-growth process where reversible chain transfer occurs, i.e. H₃B ⋅ PRH₂/oligomer/polymer can all coordinate with, and be activated by, the catalyst. Block copolymer [H₂BPPhH]₁₁₀-𝑏-[H₂BP(n-hexyl)H]₁₁ can be synthesized and self-assembles in solution to form either rod-like micelles or vesicles depending on solvent polarity.
Description
Keywords
Citation
Race, J. J., Heyam, A., Wiebe, M. A., Hernandez, J. D-G., Ellis, C. E., Lei, S., Manners, I., & Weller, A. S. (2023). Polyphosphinoborane block copolymer synthesis using catalytic reversible chain‐transfer dehydropolymerization. Angewandte Chemie International Edition, 62(3). https://doi.org/10.1002/anie.202216106