Issue 48, 2020

Imine-functionalized polysiloxanes for supramolecular elastomers with tunable mechanical properties

Abstract

Polysiloxanes are a valuable class of hybrid organic/inorganic polymers with excellent properties and broad applications. Thus, developing new synthesis strategies is of great worth to expand the family of functional polysiloxanes and bring in improved properties and unprecedented functions. In this work, we have examined the imine chemistry for post-polymerization functionalization of polysiloxanes and further used these polymers for preparing coordination elastomers. Five kinds of imine-functionalized polysiloxanes were synthesized via the reaction of poly[(aminopropyl)methylsiloxane-co-dimethylsiloxane] with different aromatic aldehydes under mild conditions. All these polymers exhibit excellent thermal stability, a low glass transition temperature, and unconventional photoluminescence behavior. Based on the metal coordination of imine-functionalized polysiloxanes, a series of silicone elastomers were prepared with tunable mechanical properties adjusted by changing the imine content and the metal ion type and content. To the best of our knowledge, this is the first report on the utilization of polymers with simple imines to construct supramolecular coordination elastomers. More importantly, by changing the electronic effect of the imine group to adjust its coordination ability, we provide a new strategy to adjust the mechanical properties of coordination elastomers.

Graphical abstract: Imine-functionalized polysiloxanes for supramolecular elastomers with tunable mechanical properties

Supplementary files

Article information

Article type
Paper
Submitted
03 Sep 2020
Accepted
15 Nov 2020
First published
17 Nov 2020

Polym. Chem., 2020,11, 7721-7728

Imine-functionalized polysiloxanes for supramolecular elastomers with tunable mechanical properties

H. Hu, L. Wang, L. Wang, L. Li and S. Feng, Polym. Chem., 2020, 11, 7721 DOI: 10.1039/D0PY01253J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements