Protic organic ionic plastic crystals based on a difunctional cation and the triflate anion: a new solid-state proton conductor

Jun Rao, R. Vijayaraghavan, Fangfang Chen, Haijin Zhu, Patrick C. Howlett, Douglas R. MacFarlane, Maria Forsyth

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Two protic organic ionic plastic crystalline materials based on the mono- and di-protonated cations of N,N-dimethylethylenediamine, (DMEDA) and the triflate anion have been studied. The symmetrical di-protonated cation salt shows 54 °C higher melting point and 24-fold higher conductivity at room temperature as compared to the mono-protonated cation salt, making it a promising candidate for a solid-state proton conductor. The conductivity of this salt was further enhanced by acid doping.

Original languageEnglish
Pages (from-to)14097-14100
Number of pages4
JournalChemical Communications
Issue number98
Publication statusPublished - 21 Dec 2016

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