Polyphosphinoborane Block Copolymer Synthesis Using Catalytic Reversible Chain‐Transfer Dehydropolymerization

An amphiphilic block copolymer of polyphosphinoborane has been prepared by a mechanism‐led strategy of the sequential catalytic dehydropolymerization of precursor monomers, H(3)B ⋅ PRH(2) (R=Ph, n‐hexyl), using the simple pre‐catalyst [Rh(Ph(2)PCH(2)CH(2)PPh(2))(2)]Cl. Speciation, mechanism and poly...

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Detalles Bibliográficos
Autores principales: Race, James J., Heyam, Alex, Wiebe, Matthew A., Diego‐Garcia Hernandez, J., Ellis, Charlotte E., Lei, Shixing, Manners, Ian, Weller, Andrew S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Research Articles
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10107156/
https://www.ncbi.nlm.nih.gov/pubmed/36394131
http://dx.doi.org/10.1002/anie.202216106
Descripción
Sumario:An amphiphilic block copolymer of polyphosphinoborane has been prepared by a mechanism‐led strategy of the sequential catalytic dehydropolymerization of precursor monomers, H(3)B ⋅ PRH(2) (R=Ph, n‐hexyl), using the simple pre‐catalyst [Rh(Ph(2)PCH(2)CH(2)PPh(2))(2)]Cl. Speciation, mechanism and polymer chain growth studies support a step‐growth process where reversible chain transfer occurs, i.e. H(3)B ⋅ PRH(2)/oligomer/polymer can all coordinate with, and be activated by, the catalyst. Block copolymer [H(2)BPPhH](110)‐b‐[H(2)BP(n‐hexyl)H](11) can be synthesized and self‐assembles in solution to form either rod‐like micelles or vesicles depending on solvent polarity.

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