6533b82ffe1ef96bd129653a

RESEARCH PRODUCT

Supramolecular Linear-g-Hyperbranched Graft Polymers: Topology and Binding Strength of Hyperbranched Side Chains

Anja ThomasChristian MoersMarcel WisselLutz NuhnDavid SchaeffelKaloian KoynovRené StangenbergElena Berger-nicolettiRudolf ZentelMihail MondeshkiHolger FreyMarkus Klapper

subject

chemistry.chemical_classificationPolymers and PlasticsOrganic Chemistrytechnology industry and agricultureSupramolecular chemistryIsothermal titration calorimetryPolymerRaftInorganic Chemistrychemistry.chemical_compoundGraft polymerchemistryPolymer chemistryMaterials ChemistryCopolymerSide chainEthylene glycol

description

Complex, reversible hyperbranched graft polymer topologies have been obtained by spontaneous self-assembly. Well-defined adamantyl- and β-cyclodextrin-functionalized polymers were employed to generate linear-g-(linear–hyperbranched) supramolecular graft terpolymers. For this purpose the synthesis of monoadamantyl-functionalized linear polyglycerols (Ada-linPG) and hyperbranched polyglycerols (Ada-hbPG) as well as poly(ethylene glycol)-block-linear polyglycerol (Ada-PEG-b-linPG) and poly(ethylene glycol)-block-hyperbranched poly(glycerol) (Ada-PEG-b-hbPG) block copolymers was established. Isothermal titration calorimetry (ITC) with β-cyclodextrin revealed a shielding effect of hyperbranched polyglycerol for the adamantyl functionality, which was significantly less pronounced when using a linear spacer chain between the adamantyl residue and the hyperbranched polyglycerol block. Additionally, well-defined poly(2-hydroxypropylamide) (PHPMA) with pendant β-cyclodextrin moieties was synthesized via RAFT polyme...

yearjournalcountryeditionlanguage
2013-12-03Macromolecules
https://doi.org/10.1021/ma402081h