ORCID Profile
0000-0002-8789-3918
Current Organisation
Deakin University
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Publisher: American Chemical Society (ACS)
Date: 21-11-2011
DOI: 10.1021/JA207005Z
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.
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0PY00178C
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4PY01282H
Abstract: We demonstrate the formation of oxime-functional macromolecular stars that are able to dissociate and reconstruct themselves upon application of a stimulus.
Publisher: Springer Science and Business Media LLC
Date: 20-02-2017
DOI: 10.1038/NCHEM.2730
Abstract: Macromolecular architecture plays a pivotal role in determining the properties of polymers. When designing polymers for specific applications, it is not only the size of a macromolecule that must be considered, but also its shape. In most cases, the topology of a polymer is a static feature that is inalterable once synthesized. Using reversible-covalent chemistry to prompt the disconnection of chemical bonds and the formation of new linkages in situ, we report polymers that undergo dramatic topological transformations via a process we term macromolecular metamorphosis. Utilizing this technique, a linear hiphilic block copolymer or hyperbranched polymer undergoes 'metamorphosis' into comb, star and hydrophobic block copolymer architectures. This approach was extended to include a macroscopic gel which transitioned from a densely and covalently crosslinked network to one with larger distances between the covalent crosslinks when heated. These architectural transformations present an entirely new approach to 'smart' materials.
Publisher: American Chemical Society (ACS)
Date: 26-03-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY00345E
Abstract: A switchable polymeric 19 F magnetic resonance imaging (MRI) contrast agent was synthesised whereby the transverse ( T 2 ) relaxation times increased as a therapeutic was released from a hyperbranched polymer (HBP) scaffold.
Publisher: American Chemical Society (ACS)
Date: 08-03-2013
DOI: 10.1021/MA400169M
Publisher: Elsevier BV
Date: 11-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1PY00031D
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9MH01223K
Abstract: The recent progress in healable and reprocessable bulk network polymers with dynamic B–O bonds is reviewed.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2PY20351K
Publisher: Elsevier BV
Date: 10-2018
No related grants have been discovered for Abhijeet Bapat.