. 2021 Oct 9;13(20):3462. doi: 10.3390/polym13203462
© 2021 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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| Comp | 26a | 26b | 26c | 26d | 26e |
| R | CN | Cl | H | CH3 | OCH3 |
