Cargando…

Tuning layered superstructures in precision polymers

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 monomeri...

Descripción completa

Detalles Bibliográficos
Autores principales: Danke, Varun, Reimann, Sophie, Binder, Wolfgang H., Gupta, Gaurav, Beiner, Mario
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7374706/
https://www.ncbi.nlm.nih.gov/pubmed/32694581
http://dx.doi.org/10.1038/s41598-020-68927-x
_version_ 1783561744627531776
author Danke, Varun
Reimann, Sophie
Binder, Wolfgang H.
Gupta, Gaurav
Beiner, Mario
author_facet Danke, Varun
Reimann, Sophie
Binder, Wolfgang H.
Gupta, Gaurav
Beiner, Mario
author_sort Danke, Varun
collection PubMed
description 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.
format Online
Article
Text
id pubmed-7374706
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-73747062020-07-22 Tuning layered superstructures in precision polymers Danke, Varun Reimann, Sophie Binder, Wolfgang H. Gupta, Gaurav Beiner, Mario Sci Rep Article 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. Nature Publishing Group UK 2020-07-21 /pmc/articles/PMC7374706/ /pubmed/32694581 http://dx.doi.org/10.1038/s41598-020-68927-x Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Danke, Varun
Reimann, Sophie
Binder, Wolfgang H.
Gupta, Gaurav
Beiner, Mario
Tuning layered superstructures in precision polymers
title Tuning layered superstructures in precision polymers
title_full Tuning layered superstructures in precision polymers
title_fullStr Tuning layered superstructures in precision polymers
title_full_unstemmed Tuning layered superstructures in precision polymers
title_short Tuning layered superstructures in precision polymers
title_sort tuning layered superstructures in precision polymers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7374706/
https://www.ncbi.nlm.nih.gov/pubmed/32694581
http://dx.doi.org/10.1038/s41598-020-68927-x
work_keys_str_mv AT dankevarun tuninglayeredsuperstructuresinprecisionpolymers
AT reimannsophie tuninglayeredsuperstructuresinprecisionpolymers
AT binderwolfgangh tuninglayeredsuperstructuresinprecisionpolymers
AT guptagaurav tuninglayeredsuperstructuresinprecisionpolymers
AT beinermario tuninglayeredsuperstructuresinprecisionpolymers