Tuning layered superstructures in precision polymers.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
21 Jul 2020
21 Jul 2020
Historique:
received:
19
01
2020
accepted:
11
06
2020
entrez:
23
7
2020
pubmed:
23
7
2020
medline:
23
7
2020
Statut:
epublish
Résumé
An approach to influence and control layered superstructures by varying the methylene sequence length between two consecutive functional groups in linear precision polymers containing 2,6-diaminopyridine (DAP) groups is presented. Layered superstructures with repeating units involving three monomeric units along the chain direction with very high coherence lengths upto 110 nm are observed in case of shorter alkyl segments, (16 and 18 [Formula: see text] units), while more conventional layer superstructures incorporating only one monomer are found for related polymers with 20 [Formula: see text] units per methylene sequence. A building block model explaining the unusually large periodicity of three monomeric units is proposed wherein layers containing crystalline or amorphous methylene sequences occur in different combinations. Occurrence of different layered structures depending on crystallization conditions, methylene sequence length as well as functional group type is explained by a competition of H-interactions between the DAP groups and the van der Waal forces between the hydrophobic methylene groups.
Identifiants
pubmed: 32694581
doi: 10.1038/s41598-020-68927-x
pii: 10.1038/s41598-020-68927-x
pmc: PMC7374706
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
12119Subventions
Organisme : Deutsche Forschungsgemeinschaft
ID : SFB-TRR 102
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