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Characterisation of hydration and nanophase separation during the temperature response in hydrophobic/ hydrophilic elastin-like polypeptide (ELP) diblock copolymers

dc.rights.licenseopen
hal.structure.identifierMartin-Luther-Universität Halle Wittenberg [MLU]
dc.contributor.authorWIDDER, Katharina
hal.structure.identifierDuke Univ, Dept Biomed Engn
dc.contributor.authorMACEWAN, Sarah R.
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 3 LCPO : Polymer Self-Assembly & Life Sciences
dc.contributor.authorGARANGER, Elisabeth
IDREF: 089451740
hal.structure.identifierMartin-Luther-Universität Halle Wittenberg [MLU]
dc.contributor.authorNÚÑEZ, Vanesa
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 3 LCPO : Polymer Self-Assembly & Life Sciences
dc.contributor.authorLECOMMANDOUX, Sebastien
hal.structure.identifierDuke Univ, Dept Biomed Engn
dc.contributor.authorCHILKOTI, Ashutosh
hal.structure.identifierMartin-Luther-Universität Halle Wittenberg [MLU]
dc.contributor.authorHINDERBERGER, Dariush
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2017
dc.identifier.issn1744-683X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20140
dc.description.abstractEnTo understand the complex nanoscale dehydration process during the lower critical solution temperature (LCST) based inverse phase transition of a class of thermoresponsive biopolymers, diblock elastin-like polypetides (ELPs) were investigated by spin probing continuous wave electron paramagnetic resonance (CW EPR) spectroscopy. The diblock copolymers composed of a hydrophobic block and a hydrophilic block showed different mechanisms of a temperature-driven phase transition. While the phase transition temperature is a function of the hydrophobic mass fraction of the diblock ELPs, the hydrophilic block length determines the molecular structure of the polymer aggregates formed above the transition temperature. When the weight ratio of hydrophilic block length to hydrophobic block length is greater than or equal to 0.3, the polymer aggregates consist of a hydrophobic core and a hydrophilic corona. The interface of these two regions become permeable at temperatures above the transition temperature. In case of smaller ratios, the aggregating hydrophobic parts of the polymer enclose the hydrated hydrophilic blocks, that are too small to form a hydrophilic corona, leading to bigger and less dense aggregates of higher polarity.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.subject.enElastin-like polypeptides
dc.subject.enEPR - Electron paramagnetic resonance
dc.subject.enMicelles/nanoparticules polymères
dc.subject.enRPE - Résonance Paramagnétique Electronique
dc.title.enCharacterisation of hydration and nanophase separation during the temperature response in hydrophobic/ hydrophilic elastin-like polypeptide (ELP) diblock copolymers
dc.typeArticle de revue
dc.identifier.doi10.1039/C6SM02427K
dc.subject.halChimie/Matériaux
dc.subject.halChimie/Polymères
dc.subject.halSciences du Vivant [q-bio]/Biotechnologies
bordeaux.journalSoft Matter
bordeaux.page1816-1822
bordeaux.volume13
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue9
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-01456156
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01456156v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Soft%20Matter&rft.date=2017&rft.volume=13&rft.issue=9&rft.spage=1816-1822&rft.epage=1816-1822&rft.eissn=1744-683X&rft.issn=1744-683X&rft.au=WIDDER,%20Katharina&MACEWAN,%20Sarah%20R.&GARANGER,%20Elisabeth&N%C3%9A%C3%91EZ,%20Vanesa&LECOMMANDOUX,%20Sebastien&rft.genre=article


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