Superprotonic conduction of intrinsically zwitterionic microporous polymers based on easy-to-make squaraine, croconaine and rhodizaine dyes

Dominic Taylor; Xuanhe Hu; Can-Min Wu; John M. Tobin; Zuzana Oriou; Jun He; Zhengtao Xu; Filipe Vilela

doi:10.1039/d2na00177b

Superprotonic conduction of intrinsically zwitterionic microporous polymers based on easy-to-make squaraine, croconaine and rhodizaine dyes

Dominic Taylor, Xuanhe Hu, Can-Min Wu, John M. Tobin, Zuzana Oriou, Jun He^*, Zhengtao Xu, Filipe Vilela

^*Corresponding author for this work

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

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Abstract

Porous organic polymers (POPs) have been prepared via a novel metal free polycondensation between a tritopic indole-based monomer and squaric, croconic and rhodizonic acids. Each of the three POPs exhibited high BET surface areas (331-667 m² g⁻¹) and zwitterionic structures. Impedance measurements revealed that the intrinsic POPs were relatively weak proton conductors, with a positive correlation between the density of oxo-groups and the proton conduction. Doping the materials with LiCl vastly improved the proton conductivity up to a value of 0.54 S cm⁻¹ at 90 °C and 90% relative humidity.

Original language	English
Pages (from-to)	2922-2928
Number of pages	7
Journal	Nanoscale Advances
Volume	4
Issue number	13
Early online date	8 Jun 2022
DOIs	https://doi.org/10.1039/d2na00177b
Publication status	Published - 7 Jul 2022

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Atomic and Molecular Physics, and Optics
Materials Science(all)
Engineering(all)

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title = "Superprotonic conduction of intrinsically zwitterionic microporous polymers based on easy-to-make squaraine, croconaine and rhodizaine dyes",

abstract = "Porous organic polymers (POPs) have been prepared via a novel metal free polycondensation between a tritopic indole-based monomer and squaric, croconic and rhodizonic acids. Each of the three POPs exhibited high BET surface areas (331-667 m2 g−1) and zwitterionic structures. Impedance measurements revealed that the intrinsic POPs were relatively weak proton conductors, with a positive correlation between the density of oxo-groups and the proton conduction. Doping the materials with LiCl vastly improved the proton conductivity up to a value of 0.54 S cm−1 at 90 °C and 90% relative humidity.",

author = "Dominic Taylor and Xuanhe Hu and Can-Min Wu and Tobin, {John M.} and Zuzana Oriou and Jun He and Zhengtao Xu and Filipe Vilela",

note = "Funding Information: We thank Hua-Qun Zhou and Dr Yonghe He for their help with this work. Publisher Copyright: {\textcopyright} 2022 The Author(s).",

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AU - Hu, Xuanhe

AU - Wu, Can-Min

AU - Tobin, John M.

AU - Oriou, Zuzana

AU - He, Jun

AU - Xu, Zhengtao

AU - Vilela, Filipe

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AB - Porous organic polymers (POPs) have been prepared via a novel metal free polycondensation between a tritopic indole-based monomer and squaric, croconic and rhodizonic acids. Each of the three POPs exhibited high BET surface areas (331-667 m2 g−1) and zwitterionic structures. Impedance measurements revealed that the intrinsic POPs were relatively weak proton conductors, with a positive correlation between the density of oxo-groups and the proton conduction. Doping the materials with LiCl vastly improved the proton conductivity up to a value of 0.54 S cm−1 at 90 °C and 90% relative humidity.

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Superprotonic conduction of intrinsically zwitterionic microporous polymers based on easy-to-make squaraine, croconaine and rhodizaine dyes

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