Gutenberg Open Science: Connectivity defects and collective assemblies in model metallo-supramolecular dual-network hydrogels

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7059

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DC Field	Value	Language
dc.contributor.author	Ahmadi, Mostafa	-
dc.contributor.author	Löser, Lucas	-
dc.contributor.author	Fischer, Karl	-
dc.contributor.author	Saalwächter, Kay	-
dc.contributor.author	Seiffert, Sebastian	-
dc.date.accessioned	2022-06-01T09:31:18Z	-
dc.date.available	2022-06-01T09:31:18Z	-
dc.date.issued	2020	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/7073	-
dc.description.abstract	Double network hydrogels are composed of chemical and physical bonds, whose influences on the macroscopic material properties are convoluted. To decouple these, a model dually crosslinked network with independently tunable permanent and reversible crosslinks is introduced. This is realized by interlinking linear and tetra-arm poly(ethylenegycol) (PEG) precursors with complementary reactive terminal groups. The former also carries a terpyridine ligand at each end, which forms reversible metallo-supramolecular bonds upon addition of metal ions. These dual networks display different types and amounts of network defects, as studied by light scattering and proton double-quantum (DQ) NMR. Dynamic light scattering suggests that the network mesh size decreases upon introduction of metal ions, as supported by a decrease of the residual dipolar coupling constant in NMR. Static light scattering indicates larger static inhomogeneities in those networks composed of stronger ions. This is complemented by a fast solid-like component in the DQ buildup in NMR, attributed to the formation of nanoscopic clusters of charged complexes. The DQ buildup curves also suggest that the presence of strong physical bonds increases the fraction of mobile segments, like loops and dangling ends. This combined study unveils the interplay of chemical and physical bonds toward the formation of a hierarchical structure.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	530 Physik	de_DE
dc.subject.ddc	530 Physics	en_GB
dc.subject.ddc	540 Chemie	de_DE
dc.subject.ddc	540 Chemistry and allied sciences	en_GB
dc.title	Connectivity defects and collective assemblies in model metallo-supramolecular dual-network hydrogels	de_DE
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-7059	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Macromolecular chemistry and physics	de
jgu.journal.volume	221	de
jgu.journal.issue	1	de
jgu.pages.alternative	1900400	de
jgu.publisher.year	2020	-
jgu.publisher.name	Wiley-VCH	de
jgu.publisher.place	Weinheim	de
jgu.publisher.issn	1521-3935	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	530	de
jgu.subject.ddccode	540	de
jgu.publisher.doi	10.1002/macp.201900400	de
jgu.organisation.ror	https://ror.org/023b0x485
Appears in collections:	JGU-Publikationen

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