Relating alkaline stability to the structure of quaternary phosphonium cations

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Date
2018-07-25
Author
Zhang, Bingzi
Long, Hai
Kaspar, Robert B.
Wang, Junhua
Gu, Shuang
Zhuang, Zhongbin
Pivovar, Bryan
Yan, Yushan
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Citation
B. Zhang, H. Long, R. B. Kaspar, J. Wang, S. Gu, Z. Zhuang, B. Pivovar and Y. Yan, RSC Adv., 2018, 8, 26640
Abstract
Alkali-stable quaternary phosphonium (QP) is a type of cationic group for hydroxide exchange membranes (HEMs). To elucidate the relationship between structure and alkaline stability, we investigated the kinetics and degradation mechanism of a series of QP cations by both experiment and computation, and established a semi-empirical formula based on the Taft equation to directly estimate alkaline stability of QP cations from the P-31 NMR chemical shift delta and the steric substituent constant E-s, facilitating the search for QP cations with improved alkaline stability.
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This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.
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https://doi.org/10.1039/c8ra03440k
http://hdl.handle.net/10057/15521
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