Issue 42, 2019

Hyperconjugation-induced chromism in linear responsive polymers

Abstract

Responsive polymers, undergoing changes in light absorption and emission properties in response to stimuli, have been extensively investigated as key smart materials. Here, we report the nature underlying the optical and spectroscopic responses in linear polydiacetylenes, responsive conjugated polymers well-known for a blue-to-red transition upon specific stimuli. By means of a theoretical strategy mimicking entire empirical treatments, we reveal that hyperconjugation between the side chain and conjugated backbone signals their response: the first understanding at the electronic state level, unlike molecular conformational arguments prevailing since topochemical polymerization was discovered by Wegner in 1972. We provide quantitative exploration of (i) the thermochromic response, and (ii) applied functions showing reversible and irreversible chromism. The present work should lead to a new angle for polydiacetylene-based materials design from the hyperconjugation perspective.

Graphical abstract: Hyperconjugation-induced chromism in linear responsive polymers

Supplementary files

Article information

Article type
Paper
Submitted
15 Jun 2019
Accepted
01 Oct 2019
First published
01 Oct 2019

J. Mater. Chem. C, 2019,7, 13130-13138

Hyperconjugation-induced chromism in linear responsive polymers

Y. K. Choi, S. Y. Lee and D. J. Ahn, J. Mater. Chem. C, 2019, 7, 13130 DOI: 10.1039/C9TC03204E

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