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New triazolium based ionic liquid crystals

TitleNew triazolium based ionic liquid crystals
Publication TypeJournal Article
Year of Publication2014
AuthorsStappert, K, Unal, D, Mallick, B, Mudring, AV
JournalJournal of Materials Chemistry C
Date Published10/07
Type of ArticleArticle
ISBN Number2050-7526
Accession NumberWOS:000341458000030
Keywordsbaylis-hillman reaction, behavior, dye, electrolyte, imidazolium salts, phase, sensitized solar-cells, shape

A set of novel 1,2,3-triazolium based ionic liquid crystals was synthesized and their mesomorphic behaviour studied by DSC (differential scanning calorimetry), POM (polarizing optical microscopy) and SAXS (small angle X-ray scattering). Beside the variation of the chain length (C-10, C-12 and C-14) at the 1,2,3-triazolium cation also the anion has been varied (Br-, I-, I-3(-), BF4-, SbF6-, N(CN)(2)(-), Tf2N-) to study the influence of ion size, symmetry and H-bonding capability on the mesophase formation. Interestingly, for the 1,3-didodecyl-1,2,3-triazolium cation two totally different conformations were found in the crystal structure of the bromide (U-shaped) and the triiodide (rod shaped).

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