Electronic Effect-Modulated Enhancements of Proton Conductivity in Porous Organic Polymers

Sun Young Kim; Minjung Kang; Dong Won Kang; Hyojin Kim; Jong Hyeak Choe; Hongryeol Yun; Chang Seop Hong

doi:10.1002/anie.202214301

Electronic Effect-Modulated Enhancements of Proton Conductivity in Porous Organic Polymers

Sun Young Kim, Minjung Kang, Dong Won Kang, Hyojin Kim, Jong Hyeak Choe, Hongryeol Yun, Chang Seop Hong

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We proposed a new strategy to maximize the density of acidic groups by modulating the electronic effects of the substituents for high-performance proton conductors. The conductivity of the sulfonated 1-MeL40-S with methyl group corresponds to 2.29×10⁻¹ S cm⁻¹ at 80 °C and 90 % relative humidity, remarkably an 22100-fold enhancement over the nonsulfonated 1-MeL40. 1-MeL40-S maintains long-term conductivity for one month. We confirm that this synthetic method is generalized to the extended version POPs, 2-MeL40-S and 3-MeL40-S. In particular, the conductivities of the POPs compete with those of top-level porous organic conductors. Moreover, the activation energy of the POPs is lower than that of the top-performing materials. This study demonstrates that systematic alteration of the electronic effects of substituents is a useful route to improve the conductivity and long-term durability of proton-conducting materials.

Original language	English
Article number	e202214301
Journal	Angewandte Chemie - International Edition
Volume	62
Issue number	2
DOIs	https://doi.org/10.1002/anie.202214301
Publication status	Published - 2023 Jan 9

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF‐2021R1A2B5B03086313) and the Priority Research Centers Program (NRF‐2019R1A6A1A11044070).

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

Keywords

Electronic Effect
Long-Term Performance
Porous Organic Polymers
Proton Conduction

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1002/anie.202214301

Cite this

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title = "Electronic Effect-Modulated Enhancements of Proton Conductivity in Porous Organic Polymers",

abstract = "We proposed a new strategy to maximize the density of acidic groups by modulating the electronic effects of the substituents for high-performance proton conductors. The conductivity of the sulfonated 1-MeL40-S with methyl group corresponds to 2.29×10−1 S cm−1 at 80 °C and 90 % relative humidity, remarkably an 22100-fold enhancement over the nonsulfonated 1-MeL40. 1-MeL40-S maintains long-term conductivity for one month. We confirm that this synthetic method is generalized to the extended version POPs, 2-MeL40-S and 3-MeL40-S. In particular, the conductivities of the POPs compete with those of top-level porous organic conductors. Moreover, the activation energy of the POPs is lower than that of the top-performing materials. This study demonstrates that systematic alteration of the electronic effects of substituents is a useful route to improve the conductivity and long-term durability of proton-conducting materials.",

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AU - Kim, Hyojin

AU - Choe, Jong Hyeak

AU - Yun, Hongryeol

AU - Hong, Chang Seop

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF‐2021R1A2B5B03086313) and the Priority Research Centers Program (NRF‐2019R1A6A1A11044070). Publisher Copyright: © 2022 Wiley-VCH GmbH.

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N2 - We proposed a new strategy to maximize the density of acidic groups by modulating the electronic effects of the substituents for high-performance proton conductors. The conductivity of the sulfonated 1-MeL40-S with methyl group corresponds to 2.29×10−1 S cm−1 at 80 °C and 90 % relative humidity, remarkably an 22100-fold enhancement over the nonsulfonated 1-MeL40. 1-MeL40-S maintains long-term conductivity for one month. We confirm that this synthetic method is generalized to the extended version POPs, 2-MeL40-S and 3-MeL40-S. In particular, the conductivities of the POPs compete with those of top-level porous organic conductors. Moreover, the activation energy of the POPs is lower than that of the top-performing materials. This study demonstrates that systematic alteration of the electronic effects of substituents is a useful route to improve the conductivity and long-term durability of proton-conducting materials.

AB - We proposed a new strategy to maximize the density of acidic groups by modulating the electronic effects of the substituents for high-performance proton conductors. The conductivity of the sulfonated 1-MeL40-S with methyl group corresponds to 2.29×10−1 S cm−1 at 80 °C and 90 % relative humidity, remarkably an 22100-fold enhancement over the nonsulfonated 1-MeL40. 1-MeL40-S maintains long-term conductivity for one month. We confirm that this synthetic method is generalized to the extended version POPs, 2-MeL40-S and 3-MeL40-S. In particular, the conductivities of the POPs compete with those of top-level porous organic conductors. Moreover, the activation energy of the POPs is lower than that of the top-performing materials. This study demonstrates that systematic alteration of the electronic effects of substituents is a useful route to improve the conductivity and long-term durability of proton-conducting materials.

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Electronic Effect-Modulated Enhancements of Proton Conductivity in Porous Organic Polymers

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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