Amphiphilic block copolymers featuring a reversible hetero Diels-Alder linkage
dc.bibliographicCitation.firstPage | 5330 | eng |
dc.bibliographicCitation.issue | 18 | eng |
dc.bibliographicCitation.journalTitle | Polymer Chemistry | eng |
dc.bibliographicCitation.volume | 5 | eng |
dc.contributor.author | Langer, M. | |
dc.contributor.author | Brandt, J. | |
dc.contributor.author | Lederer, A. | |
dc.contributor.author | Goldmann, A.S. | |
dc.contributor.author | Schacher, F.H. | |
dc.contributor.author | Barner-Kowollik, C. | |
dc.date.accessioned | 2020-11-20T17:21:07Z | |
dc.date.available | 2020-11-20T17:21:07Z | |
dc.date.issued | 2014 | |
dc.description.abstract | The present article reports the preparation of a novel class of switchable amphiphilic diblock copolymers with a temperature switchable linkage. Reversible addition fragmentation chain transfer (RAFT) polymerization was used to synthesize the individual blocks: for the preparation of the non-polar block, i.e. poly(isoprene-co-styrene) (P(I-co-S)) (9200 g mol-1 ≤ M n ≤ 50000 g mol-1, 1.22 ≤ ≤ 1.36), a chain transfer agent (CTA, 3-((2-bromo-2-methylpropanoyl)oxy)propyl 2-(((dodecylthio)carbonothioyl)thio)-2-methylpropanoate) carrying a bromine group was employed, ready for subsequent cyclopentadienyl (Cp) transformation. For the preparation of the polar block, triethylene glycol methyl ether acrylate (TEGA) was polymerized (6600 g mol-1 ≤ Mn ≤ 35000 g mol-1, 1.12 ≤ ≤ 1.30) using a RAFT agent carrying a phosphoryl Z-group, which is able to undergo hetero Diels-Alder (HDA) ligation with Cp moieties. Both building blocks were conjugated at ambient temperature in the presence of ZnCl2 as catalyst yielding the amphiphilic block copolymer P(I-co-S)-b-PTEGA (16000 g mol-1 ≤ Mn ≤ 68000 g mol-1, 1.15 ≤ ≤ 1.32). To investigate the bonding/debonding capability of the HDA linkage, high temperature nuclear magnetic resonance (HT-NMR) spectroscopy, high temperature dynamic light scattering (HT-DLS) and high temperature size exclusion chromatography (HT-SEC) were carried out, evidencing that efficiently switchable amphiphilic block copolymers were generated (>4 cycles). | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://doi.org/10.34657/4573 | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/5944 | |
dc.language.iso | eng | eng |
dc.publisher | London [u.a.] : Royal Society of Chemistry | eng |
dc.relation.doi | https://doi.org/10.1039/c4py00644e | |
dc.relation.issn | 1759-9954 | |
dc.rights.license | CC BY 3.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | eng |
dc.subject.ddc | 540 | eng |
dc.subject.other | Dynamic light scattering | eng |
dc.subject.other | Free radical polymerization | eng |
dc.subject.other | Nuclear magnetic resonance spectroscopy | eng |
dc.subject.other | Styrene | eng |
dc.subject.other | Amphiphilic block copolymers | eng |
dc.subject.other | Amphiphilic diblock copolymers | eng |
dc.subject.other | Chain transfer agents | eng |
dc.subject.other | Cyclopentadienyls | eng |
dc.subject.other | High temperature dynamics | eng |
dc.subject.other | Methyl ether acrylate | eng |
dc.subject.other | Reversible addition-fragmentation chain transfer polymerization | eng |
dc.subject.other | Triethylene glycol | eng |
dc.subject.other | Block copolymers | eng |
dc.title | Amphiphilic block copolymers featuring a reversible hetero Diels-Alder linkage | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IPF | eng |
wgl.subject | Chemie | eng |
wgl.type | Zeitschriftenartikel | eng |
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