Hexameric cycles from hydrogen-bonded ureido-pyrimidinones

H.M. Keizer, A. Ramzi, R.P. Sijbesma, E.W. Meijer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

Abstract

Supramol. polymers form a new class of polymers in which the reversibility of the non-covalent bonds between the monomers gives rise to interesting material properties. Ureido-pyrimidinone mols. strongly dimerize via quadruple hydrogen bonds and bi-functional derivs. form polymers or cyclic structures depending on the pre-organization of the linker and external conditions such as concn. and temp. Bi-functional ureido-pyrimidinone mols. with a meta-phenylene linker aggregate into hexameric cycles, due to pre-organization of the phenylene linker. SANS, viscosity and NMR-diffusion measurements showed that the hexameric cycles self-assemble into cylindrical aggregates, with solvent, concn. and temp. dependent length. These cylindrical aggregates may be used as scaffolds for thermoplastic elastomers, in which the cylinders form the hard-block and the polymer the soft-block. [on SciFinder (R)]
Original languageEnglish
Title of host publicationAbstracts of Papers 225th ACS National Meeting, New Orleans, LA, United States, March 23-27, 2003
Place of PublicationWashington
PublisherAmerican Chemical Society
PagesPOLY-448
ISBN (Print)0-8412-3872-3
Publication statusPublished - 2003
Event225th ACS National Meeting - New Orleans, United States
Duration: 23 Mar 200327 Mar 2003

Conference

Conference225th ACS National Meeting
CountryUnited States
CityNew Orleans
Period23/03/0327/03/03

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