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

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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 languageEnglish
Article numbere202214301
JournalAngewandte Chemie - International Edition
Issue number2
Publication statusPublished - 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.


  • Electronic Effect
  • Long-Term Performance
  • Porous Organic Polymers
  • Proton Conduction

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


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