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Nucleobase-functionalized acrylic ABA triblock copolymers and supramolecular blends

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dc.contributor.authorZhang, Kerenen
dc.contributor.authorAiba, Motohiroen
dc.contributor.authorFahs, Gregory B.en
dc.contributor.authorHudson, Amanda G.en
dc.contributor.authorChiang, William D.en
dc.contributor.authorMoore, Robert Bowenen
dc.contributor.authorUeda, Mitsuruen
dc.contributor.authorLong, Timothy E.en
dc.contributor.departmentChemistryen
dc.contributor.departmentMacromolecules Innovation Instituteen
dc.contributor.departmentTokyo Institute of Technology. Graduate School of Science and Engineering. Department of Organic and Polymeric Materialsen
dc.date.accessed2016-03-17en
dc.date.accessioned2016-03-18T22:24:56Zen
dc.date.available2016-03-18T22:24:56Zen
dc.date.issued2015-01-30en
dc.description.abstractReversible addition-fragmentation chain transfer (RAFT) polymerization afforded the unprecedented synthesis of well-defined acrylic ABA triblock copolymers with nucleobase-functionalized external blocks and a central poly(n-butyl acrylate) (PnBA) block. Size exclusion chromatography (SEC) confirmed the molecular weight and molecular weight distribution of the central block. 1H NMR spectroscopy revealed the successful chain extension of the PnBA macro-chain transfer agent (CTA) using adenine or thymine-functionalized acrylic monomers. The acrylic monomer with a flexible spacer to the pendant nucleobases promoted intermolecular recognition of nucleobases and long range segmental motion of polymer main chains. The external block glass transition temperatures (Tg's) of thymine (T) and adenine (A) functionalized blocks were 52 °C and 76 °C, respectively. Thermomechanical and morphological analysis revealed the effect of processing conditions on self-assembly and microphase-separated morphology of nucleobase-functionalized ABA copolymers. Thymine and adenine-functionalized ABA triblocks formed a thermodynamically stable, hydrogen-bonded complex upon blending. The supramolecular blend exhibited a cylindrical microphase-separated morphology with an extended plateau window compared to the individual block copolymers. The complementary hydrogen bonding between adenine and thymine formed a thermally labile, physically crosslinked, network that exhibited enhanced mechanical performance with melt processability. Thus, these ABA nucleobase-functionalized block copolymers demonstrate potential as thermoplastic elastomers for hot melt adhesives and coatings.en
dc.description.notesContains supplementary information fileen
dc.description.notes2015 Royal Society of Chemistry Open Access Gold Articleen
dc.description.sponsorshipU.S. Army Research Laboratoryen
dc.description.sponsorshipUnited States. Army Research Officeen
dc.description.sponsorshipMultidisciplinary University Research Initiative (MURI)en
dc.description.sponsorshipHenkel Corporationen
dc.description.sponsorshipNational Science Foundation (U.S.)en
dc.format.extent11 p.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationZhang, K., Aiba, M., Fahs, G. B., Hudson, A. G., Chiang, W. D., Moore, R. B., Ueda, M., & Long, T. E. (2015). Nucleobase-functionalized acrylic ABA triblock copolymers and supramolecular blends. Polymer Chemistry, 6(13), 2434-2444. doi:10.1039/C4PY01798Fen
dc.identifier.doihttps://doi.org/10.1039/C4PY01798Fen
dc.identifier.issn1759-9954en
dc.identifier.issue13en
dc.identifier.other2015_Zhang_Nucleobase_functionalized_acrylic.pdfen
dc.identifier.otherNucleobase_functionalized_acrylic_supp_info.pdfen
dc.identifier.otherW911NF-07-1-0452en
dc.identifier.otherDMR-0923107en
dc.identifier.urihttp://hdl.handle.net/10919/64970en
dc.identifier.volume6en
dc.language.isoen_USen
dc.publisherThe Royal Society of Chemistryen
dc.rightsCreative Commons Attribution-NonCommercial 3.0 Unporteden
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/en
dc.titleNucleobase-functionalized acrylic ABA triblock copolymers and supramolecular blendsen
dc.title.serialPolymer Chemistryen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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