Dynamic-covalent macromolecular stars with boronic ester linkages

Bapat, Abhijeet P., Roy, Debashish, Ray, Jacob G., Savin, Daniel A. and Sumerlin, Brent S. (2011) Dynamic-covalent macromolecular stars with boronic ester linkages. Journal of the American Chemical Society, 133 49: 19832-19838. doi:10.1021/ja207005z

Author Bapat, Abhijeet P.
Roy, Debashish
Ray, Jacob G.
Savin, Daniel A.
Sumerlin, Brent S.
Title Dynamic-covalent macromolecular stars with boronic ester linkages
Journal name Journal of the American Chemical Society   Check publisher's open access policy
ISSN 0002-7863
Publication date 2011-12-14
Year available 2011
Sub-type Article (original research)
DOI 10.1021/ja207005z
Open Access Status Not Open Access
Volume 133
Issue 49
Start page 19832
End page 19838
Total pages 7
Place of publication Washington, DC United States
Publisher American Chemical Society
Language eng
Abstract Macromolecular stars containing reversible boronic ester linkages were prepared by an arm-first approach by reacting well-defined boronic acid-containing block copolymers with multifunctional 1,2/1,3-diols. Homopolymers of 3-acrylamidophenylboronic acid (APBA) formed macroscopic dynamic-covalent networks when cross-linked with multifunctional diols. On the other hand, adding the diol cross-linkers to block copolymers of poly(N,N-dimethylacrylamide (PDMA))-b-poly(APBA) led to nanosized multiarm stars with boronic ester cores and PDMA coronas. The assembly of the stars under a variety of conditions was considered. The dynamic-covalent nature of the boronic ester cross-links allowed the stars to reconfigure their covalent structure in the presence of monofunctional diols that competed for bonding with the boronic acid component. Therefore, the stars could be induced to dissociate via competitive exchange reactions. The star formation-dissociation process was shown to be repeatable over multiple cycles.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
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Created: Sun, 27 Sep 2015, 13:57:27 EST by Abhijeet Bapat on behalf of Aust Institute for Bioengineering & Nanotechnology