Mikto-Brush-Arm Star Polymers via Cross-Linking of
Dissimilar Bottlebrushes: Synthesis and Solution Morphologies
Version 2 2017-08-21, 18:57
Version 1 2017-08-21, 18:54
Posted on 2017-08-21 - 18:57
A convergent brush-first ring-opening
metathesis polymerization
(ROMP) approach for the synthesis of mikto-brush-arm star polymers
(MBASPs) via cross-linking of dissimilar bottlebrush polymers is reported.
Living bottlebrush polymers prepared via ROMP of norbornene-terminated
poly(ethylene glycol) (PEG) or polystyrene (PS) macromonomers (MMs)
were mixed together in a desired ratio and exposed to a bis-norbornene
cross-linker to yield MBASPs with narrow size distributions. Dynamic
light scattering (DLS) and transmission electron microscopy (TEM)
revealed that the solution morphologies of MBASPs depended on the
feed ratio of the PEG and PS bottlebrush polymers at the cross-linking
stage. This work provides a robust and modular strategy for the synthesis
of a new type of miktoarm star polymer wherein the star arms are bottlebrush
polymers.
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Shibuya, Yoshiki; Nguyen, Hung V.-T.; Johnson, Jeremiah A. (2017). Mikto-Brush-Arm Star Polymers via Cross-Linking of
Dissimilar Bottlebrushes: Synthesis and Solution Morphologies. ACS Publications. Collection. https://doi.org/10.1021/acsmacrolett.7b00529
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AUTHORS (3)
YS
Yoshiki Shibuya
HN
Hung V.-T. Nguyen
JJ
Jeremiah A. Johnson